WEST SYSTEM 742-10 Fiberglass & Repair This professional-grade 6 oz woven fiberglass fabric is a versatile, medium-weight cloth ideal for a wide range of marine laminating, repair, and reinforcement applications. The 60-inch width provides excellent coverage for large panels and surfaces, while the 10-yard length offers substantial material for medium-sized projects. Versatile Medium-Weight Fabric: At 6 oz per square yard, this woven E-glass fabric strikes an ideal balance between strength and workability. It's light enough to drape smoothly over curves and complex shapes, yet substantial enough to provide meaningful reinforcement and structural integrity. This makes it one of the most versatile fabrics for general marine construction and repair work. Excellent Wet-Out and Conformability: The woven construction allows epoxy resin to saturate quickly and completely, ensuring a strong bond with minimal voids. The fabric conforms easily to curved surfaces, corners, and irregular shapes, making it ideal for hull repairs, deck overlays, and complex composite work where the material needs to follow contours smoothly. Key Benefits: Medium Weight: 6 oz provides excellent strength without excessive stiffness Wide Coverage: 60-inch width minimizes seams on large panels Superior Drape: Conforms smoothly to curves and complex shapes Quick Wet-Out: Woven construction saturates easily with epoxy Versatile Applications: Suitable for laminating, repairs, and reinforcement Professional Quality: Consistent weave and weight for reliable results Common Applications: Hull and deck laminating and overlays Structural repairs and reinforcement Sheathing wood surfaces for moisture protection Building composite panels and structures Covering foam or core materials in sandwich construction General fiberglass repair work Creating lightweight, strong laminates Whether you're building new composite structures, repairing damaged hulls, or sheathing wood components, this 6 oz fiberglass fabric delivers the versatility, strength, and workability needed for professional-quality results in demanding marine environments. Part Number: 742-10UPC Code: 811343011901

WEST SYSTEM 881-10 Fiberglass & Repair This professional-grade breather fabric is an essential component for vacuum bagging operations, designed to create an even distribution of vacuum pressure across your entire laminate while providing a pathway for air and excess resin to escape. The 45-inch width and 10-yard length provide ample material for medium to large-scale composite projects. Critical Vacuum Bagging Component: Breather fabric serves a dual purpose in vacuum bagging systems. It distributes vacuum pressure uniformly across the laminate surface, ensuring consistent consolidation throughout the entire lay-up. Simultaneously, it creates pathways that allow trapped air and excess resin to flow toward the vacuum port, preventing dry spots and ensuring complete resin saturation. Even Pressure Distribution: The open, porous structure of this breather fabric allows atmospheric pressure to reach all areas of your laminate evenly, even in complex shapes or areas far from the vacuum port. This uniform pressure distribution is critical for achieving consistent fiber-to-resin ratios and void-free laminates across the entire surface. Efficient Air and Resin Removal: The fabric's absorbent, permeable construction creates channels that efficiently transport air and excess resin away from the laminate toward the vacuum source. This ensures complete air evacuation and optimal resin content, resulting in stronger, lighter composite structures. Key Benefits: Uniform Vacuum Distribution: Ensures consistent pressure across entire laminate Efficient Air Evacuation: Creates pathways for trapped air to escape Excess Resin Absorption: Removes surplus resin for optimal fiber-to-resin ratio Prevents Dry Spots: Maintains vacuum flow to all areas of the laminate Wide Coverage: 45-inch width accommodates large panels Reusable: Can often be cleaned and reused for multiple projects Common Applications: Vacuum bagging composite laminates Building high-performance boat structures Creating void-free sandwich panels Professional composite fabrication Any vacuum bagging operation requiring even pressure distribution Whether you're building new composite structures or performing advanced repairs, this breather fabric is essential for achieving professional-quality vacuum-bagged laminates with optimal strength-to-weight ratios and consistent results. Part Number: 881-10UPC Code: 811343012496

WEST SYSTEM 407-B Fiberglass & Repair 407 Low Density Filler is a versatile epoxy additive designed to create lightweight, easily worked fairing compounds and adhesive mixtures without adding unnecessary weight to your vessel. This professional-grade 14 lb container is ideal for applications where you need the gap-filling and fairing properties of epoxy without the density of traditional fillers. Lightweight Performance: When blended with epoxy, 407 Low Density Filler creates a workable mixture that's significantly lighter than compounds made with high-density fillers. This makes it perfect for fairing, filling, and bonding applications where minimizing weight is important, such as racing boats, performance craft, or any vessel where every pound matters. Excellent Workability: The low-density formulation creates a smooth, easily worked compound that spreads effortlessly and sands cleanly. It's ideal for filling voids, creating lightweight fillets, and general fairing work where you need good gap-filling properties without adding structural weight. Key Benefits: Low Density: Minimizes weight addition to your vessel Easy to Work: Spreads smoothly and shapes effortlessly Good Sandability: Cuts cleanly for smooth finishing Versatile Applications: Suitable for fairing, filling, and lightweight bonding Gap Filling: Bridges voids and imperfections reliably Universal Compatibility: Blends into any WEST SYSTEM 105 Epoxy Resin/200 Series Hardener combination Common Applications: Fairing hull and deck surfaces where weight is a concern Filling voids and gaps in lightweight construction Creating lightweight structural fillets General fairing and shaping work Bonding applications where minimal weight addition is desired Filling and smoothing on performance and racing craft This 14 lb container provides substantial material for medium to large-scale projects while maintaining the convenience of a manageable size. Whether you're building, repairing, or fairing, 407 Low Density Filler delivers the performance you need without the weight penalty of denser alternatives. Part Number: 407-BUPC Code: 811343011581

WEST SYSTEM 002 Manuals & Subscriptions The Gougeon Brothers on Boat Construction is the definitive guide to wood and epoxy boatbuilding, representing decades of pioneering experience and proven techniques from the innovators who revolutionized modern composite construction. This comprehensive 5th edition, completed in 2005, is trusted by professional boatbuilders and serious DIY enthusiasts worldwide. Decades of Proven Expertise: This authoritative reference compiles the Gougeon Brothers' extensive knowledge of building with wood and epoxy, combining time-tested traditional methods with cutting-edge composite technology. The result is a comprehensive resource that covers everything from fundamental techniques to advanced construction methods, all presented in a clear, accessible format. Comprehensive Coverage: The book features extensive chapters on critical topics including hardware bonding, construction methods, safety protocols, and essential tools. Each concept is thoroughly explained and supported by hundreds of detailed illustrations and photographs that make even complex techniques easy to understand and replicate. Professional-Grade Reference: This hardcover volume is so comprehensive and well-regarded that it's used as a textbook in boatbuilding schools around the world. Whether you're a professional builder, a student learning the craft, or a dedicated amateur, this book provides the knowledge and guidance needed to build strong, beautiful, long-lasting boats using wood and epoxy composite construction. Key Features: 406 Pages: Comprehensive coverage of wood and epoxy boatbuilding Hundreds of Illustrations: Detailed drawings and photographs clarify techniques Revised Layout: Improved organization for easy navigation and reference Proven Technology: Time-tested methods from the pioneers of epoxy boatbuilding Professional Quality: Used as a textbook in boatbuilding schools Durable Hardcover: Built to withstand years of shop use Topics Covered: Wood and epoxy construction fundamentals Hardware bonding techniques and best practices Construction methods for various boat types Safety protocols and workshop practices Essential tools and equipment Advanced composite techniques Whether you're planning your first build or refining your professional skills, the Gougeon Brothers on Boat Construction is an invaluable resource that belongs in every serious boatbuilder's library. Part Number: 002UPC Code: 811343012816

WEST SYSTEM 105-E Fiberglass & Repair 105 Epoxy Resin is the foundation of the renowned WEST SYSTEM epoxy family, trusted by professional boatbuilders and marine fabricators worldwide. This industrial-sized 52.03 gallon container is designed for high-volume operations, boatyards, and large-scale construction projects where consistent, reliable epoxy performance is essential. Professional-Grade Epoxy Resin: This clear, low-viscosity liquid epoxy resin is formulated to work seamlessly with any of the four WEST SYSTEM hardeners, giving you complete control over working time and cure characteristics. The low viscosity ensures excellent wet-out of fiberglass fabrics, deep penetration into wood fibers, and easy mixing with fillers and additives. Versatile Curing Range: 105 Epoxy Resin can be cured across a wide temperature range, making it suitable for year-round use in varying environmental conditions. When mixed at the proper ratio with a WEST SYSTEM hardener, it cures to form high-strength solid bonds with exceptional moisture resistance—critical for demanding marine environments. Exceptional Adhesive Properties: When combined with the appropriate WEST SYSTEM hardener, 105 Epoxy Resin creates an excellent adhesive for bonding wood, fiberglass, composites, and other materials. The strong, moisture-resistant bonds it forms make it ideal for structural applications, repairs, and construction where long-term durability is paramount. Key Features: Clear, Low Viscosity: Excellent wet-out and penetration properties Wide Temperature Cure Range: Suitable for varying environmental conditions High-Strength Bonds: Forms durable, structural adhesive joints Excellent Moisture Resistance: Ideal for marine and wet environments Versatile System: Works with all four WEST SYSTEM hardeners for customized performance Bulk Volume: 52.03 gallon container for high-volume professional operations Common Applications: Boat construction and major repairs Fiberglass laminating and composite fabrication Structural bonding and assembly Wood saturation and stabilization Coating and sealing applications Large-scale marine construction projects Important Note: 105 Epoxy Resin must be mixed with a WEST SYSTEM hardener (205, 206, 207, or 209) at the proper ratio to cure. Choose your hardener based on desired working time, cure speed, and application requirements. This industrial-sized container provides exceptional value for professional boatyards, production facilities, and contractors who demand consistent, high-quality epoxy performance for large-scale marine projects. Part Number: 105-EUPC Code: 811343010089

WEST SYSTEM 731 Fiberglass & Repair This professional-grade 9 oz woven fiberglass fabric tape is engineered for structural reinforcement applications where strength and durability are essential. The 3-inch width provides versatile coverage for a wide range of marine construction and repair projects, while the 59-yard length ensures you have ample material for substantial work. Structural Reinforcement: When bonded with WEST SYSTEM epoxy, this versatile fiberglass tape delivers exceptional tensile strength to critical structural areas. It's specifically designed to reinforce chines, hull-to-deck corners, bulkhead joints, and similar high-stress applications where preventing hairline crack development is crucial. The woven construction provides a superior strength-to-weight ratio and excellent conformability around curves and corners. Key Benefits: High Tensile Strength: Resists crack development and structural stress in critical areas Abrasion Resistance: Protects high-wear surfaces from damage and deterioration Excellent Wet-Out: Woven construction allows epoxy to saturate quickly and completely Conformable: Easily wraps around curves, corners, and irregular shapes Versatile Width: 3-inch width ideal for a wide range of structural applications Economical Coverage: 59-yard roll provides ample material for substantial projects Common Applications: Reinforcing chines and hull corners Strengthening hull-to-deck joints and seams Bulkhead tabbing and structural bonding Repairing and reinforcing high-stress areas Abrasion protection for wear-prone surfaces Crack prevention in structural joints and corners General structural reinforcement work Whether you're building new structures or reinforcing existing ones, this woven fiberglass tape delivers the strength and quality needed for long-lasting, professional results in demanding marine environments. Part Number: 731UPC Code: 811343011802

WEST SYSTEM 404-B Fiberglass & Repair 404 High-Density Adhesive Filler is the strongest epoxy thickening additive in the WEST SYSTEM lineup, specifically engineered for applications demanding maximum physical adhesive properties and structural integrity. This professional-grade 30 lb bulk container is ideal for boatyards, professional builders, and serious DIY enthusiasts who need the ultimate in bonding strength for critical applications. Engineered for Maximum Strength: West System developed 404 specifically for hardware bonding and applications where high-cyclic loads are anticipated. The high-density formulation creates exceptionally strong bonds that can withstand repeated stress, vibration, and impact without failing. When you need an adhesive that won't let go under demanding conditions, 404 is the filler of choice. Superior Gap Filling & Structural Fillets: When blended with epoxy, 404 High-Density Filler creates an excellent gap-filling adhesive and produces incredibly strong structural fillets. The dense formulation bridges gaps reliably while maintaining maximum bonding strength, making it ideal for hardware installations, structural joints, and anywhere that strength is the primary concern. The Strongest Bond Available: Use 404 wherever you need an especially strong bond that will stand up to the most demanding marine conditions. Whether you're bonding hardware that will see constant stress, creating structural fillets for critical joints, or filling gaps in high-load applications, 404 delivers unmatched adhesive strength and durability. Key Benefits: Maximum Adhesive Strength: Engineered for the strongest possible bonds High-Cyclic Load Resistance: Withstands repeated stress, vibration, and impact Excellent Gap Filling: Bridges gaps while maintaining structural integrity Superior Structural Fillets: Creates incredibly strong corner and joint reinforcements Hardware Bonding Specialist: Ideal for securing fittings, cleats, and hardware under load Universal Compatibility: Works with WEST SYSTEM 105/200 Series, G/flex 650, or G/5 Five-Minute Adhesive Common Applications: Bonding deck hardware, cleats, and fittings subject to high loads Creating structural fillets for bulkheads and critical joints Gap filling in high-stress structural applications Bonding components that will experience cyclic loading Securing through-bolted hardware and backing plates Any application requiring maximum adhesive strength This 30 lb container provides exceptional value for professional operations and frequent users who demand the absolute strongest bonds for critical marine construction and repair applications. Part Number: 404-BUPC Code: 811343011437

WEST SYSTEM 410-B Fiberglass & Repair 410 Microlight is the ideal low-density filler for creating lightweight, easily worked epoxy fairing compounds. This professional-grade 4 lb container is specifically formulated for large-scale fairing projects where you need a smooth, sandable surface without adding unnecessary weight to your vessel. Engineered for Easy Fairing: West System developed Microlight to address the common challenges of traditional fairing fillers. It mixes into epoxy significantly more easily than typical fairing compounds, creating a smooth, creamy consistency that spreads effortlessly and feathers to a fine edge. This makes it especially suited for fairing large areas where workability and coverage are critical. Superior Sanding Performance: One of Microlight's standout features is its exceptional sandability—it's 30% easier to sand than most other epoxy-based fairing compounds. This translates to less time, less effort, and less dust when shaping and finishing your fairing work. The lightweight formulation cuts cleanly without loading sandpaper, allowing you to achieve smooth, fair surfaces faster. Economical for Large Projects: The low-density formulation means you get more coverage per pound compared to heavier fillers, making Microlight more economical for large fairing jobs. It feathers to a fine edge, minimizing the amount of material needed at transitions and reducing overall material costs. Key Benefits: Low Density: Lightweight formulation won't add unnecessary weight to your vessel Easy Mixing: Blends into epoxy more easily than typical fairing fillers 30% Easier to Sand: Saves time and effort during finishing work Fine Feathering: Creates smooth transitions and edges Economical Coverage: More coverage per pound for large-scale projects Smooth Workability: Spreads easily and shapes effortlessly Important Considerations: Microlight is not recommended for use under dark paint or on surfaces subject to high temperatures, as the low-density formulation may be affected by heat buildup. Designed For: Fairing large hull and deck areas Thickening epoxy for lightweight applications Creating smooth, sandable surfaces on light-colored finishes Filling and shaping where weight is a concern Microlight blends seamlessly into any WEST SYSTEM 105 Epoxy Resin/200 Series Hardener combination, giving you a versatile, high-performance fairing compound for professional-quality results. Part Number: 410-BUPC Code: 811343011635

WEST SYSTEM 403-B Fiberglass & Repair 403 Microfibers Adhesive Filler is a fine fiber blend specifically engineered to create versatile, high-strength epoxy adhesives with exceptional bonding and gap-filling properties. This professional-grade 20 lb bulk container is ideal for boatyards, professional builders, and serious DIY enthusiasts who need a reliable, multi-purpose adhesive filler for demanding marine applications. The Ultimate Wood Bonding Filler: While 403 Microfibers excels in many applications, it's most renowned for creating superior wood-bonding adhesives. When blended with epoxy, the fine fiber structure creates a thickened mixture that maintains excellent wetting and penetrating properties, allowing it to soak into wood fibers for maximum mechanical bonding while still providing reliable gap-filling performance. Gap-Filling with Penetration: Unlike purely thickening fillers that simply bulk up epoxy, 403 Microfibers strikes the perfect balance between gap-filling capability and penetration. The fine fiber blend creates a structural adhesive that can bridge gaps and fill voids while still wetting out and penetrating porous surfaces like wood. This dual capability makes it ideal for real-world bonding situations where surfaces aren't perfectly matched. Multi-Purpose Versatility: 403 Microfibers transforms epoxy into a true multi-purpose adhesive suitable for a wide range of bonding applications beyond wood. It creates strong, reliable bonds for structural joints, hardware installations, and general assembly work where you need both strength and gap-filling performance. Key Benefits: Superior Wood Bonding: Penetrates wood fibers while filling gaps for maximum bond strength Excellent Gap Filling: Bridges imperfect joints and uneven surfaces reliably Strong Structural Bonds: Creates high-strength adhesive joints for critical applications Good Wetting Properties: Maintains penetration into porous surfaces despite thickening Multi-Purpose Use: Versatile adhesive for wood, composites, and general bonding Universal Compatibility: Works with WEST SYSTEM 105/200 Series, G/flex 650, or G/5 Five-Minute Adhesive Common Applications: Bonding wood components in boat construction and repair Structural joints requiring gap-filling capability Hardware bonding and installation General assembly and construction adhesive Bonding dissimilar materials Filling and bonding imperfect joints This 20 lb container provides exceptional value for professional operations and frequent users who demand consistent, reliable bonding performance across a wide range of marine construction and repair applications. Part Number: 403-BUPC Code: 811343011246

WEST SYSTEM 885 Fiberglass & Repair The West System Vacuum Bagging Kit provides everything you need to achieve professional-quality composite laminates with superior fiber-to-resin ratios and exceptional consolidation. This comprehensive kit is designed for boatbuilders, repair professionals, and serious DIY enthusiasts who demand the highest quality results from their fiberglass and composite work. What is Vacuum Bagging? Vacuum bagging is an advanced composite fabrication technique that uses atmospheric pressure to compress laminates during cure. By removing air from a sealed bag placed over your lay-up, you create uniform pressure across the entire surface, resulting in stronger, lighter laminates with optimal fiber wet-out and minimal voids. Superior Laminate Quality: Vacuum bagging produces laminates that are significantly stronger and lighter than those created with traditional hand lay-up methods alone. The consistent pressure removes excess resin, eliminates air pockets, and ensures complete fiber wet-out, resulting in a higher fiber-to-resin ratio and superior mechanical properties. The process also creates smoother surfaces that require less fairing and finishing. Complete Kit Includes: This kit contains all the essential materials needed for vacuum bagging operations, including vacuum bag film, release fabric, breather material, sealant tape, and detailed instructions. Everything is carefully selected to work together as a complete system for reliable, repeatable results. Key Benefits: Stronger Laminates: Higher fiber-to-resin ratio creates superior strength-to-weight performance Void-Free Construction: Atmospheric pressure eliminates air pockets and voids Consistent Results: Uniform pressure across the entire laminate surface Smoother Finish: Reduced surface texture means less fairing work Professional Quality: Achieve boatyard-quality results in your own shop Complete System: All materials included and designed to work together Ideal Applications: Building or repairing composite panels and structures Creating high-performance laminates for racing or performance boats Bonding core materials in sandwich construction Achieving maximum strength-to-weight ratios Professional-quality repairs requiring optimal consolidation Whether you're building new composite structures or performing critical repairs, this vacuum bagging kit delivers the tools and materials needed to achieve professional-quality results with superior strength and finish. Part Number: 885UPC Code: 811343012533

WEST SYSTEM 879-10 Fiberglass & Repair This professional-grade release fabric is an essential component for vacuum bagging operations and advanced hand lay-up applications. The 60-inch width and 10-yard length provide ample coverage for medium-sized projects, while the specialized fabric construction ensures clean release and optimal surface preparation. Vacuum Bagging Applications: In vacuum bagging operations, this release fabric serves as a critical barrier between the breather material, vacuum bag, and your laminate. It allows excess epoxy to bleed through while preventing the breather and bag from bonding to your work. After cure, the fabric peels away cleanly along with any excess resin, leaving behind a perfectly textured surface that's ready for secondary bonding or finishing without additional surface preparation. Enhanced Hand Lay-Up Performance: For hand lay-up applications, release fabric allows you to apply significantly more squeegee pressure to achieve better fiber wet-out and consolidation without damaging the laminate surface. It also protects your lay-up from contamination during the cure process, ensuring consistent, professional results. Red Tracer System: The integrated red tracer provides instant visual confirmation if any peel ply remains on the laminate after removal. This quality control feature helps ensure complete removal and prevents bonding issues in subsequent operations. Key Features: Clean Release: Peels easily from cured laminates without tearing or leaving residue Optimal Surface Texture: Leaves a smooth, textured surface ideal for bonding or finishing High Temperature Tolerance: Handles post-cure temperatures up to 410°F (210°C) Red Tracer: Visual indicator shows any peel ply left behind on the laminate Versatile Use: Works in both vacuum bagging and hand lay-up applications Wide Coverage: 60-inch width accommodates large panels and components Common Applications: Vacuum bagging composite laminates Hand lay-up fiberglass work requiring high consolidation Preparing surfaces for secondary bonding Protecting laminates during cure Creating textured surfaces for paint or gelcoat adhesion Whether you're performing advanced vacuum bagging or precision hand lay-up work, this release fabric delivers the clean release and surface quality that professional composite fabrication demands. Normalized SKU: 87910UPC Code: 811343012472

WEST SYSTEM 729 Fiberglass & Repair This professional-grade 9 oz woven fiberglass fabric tape is engineered for structural reinforcement applications where strength and durability are essential. The 2-inch width makes it ideal for narrow chines, tight corners, and precise structural work, while the 50-yard length provides substantial coverage for large-scale projects. Structural Reinforcement: When bonded with WEST SYSTEM epoxy, this versatile fiberglass tape delivers exceptional tensile strength to critical structural areas. It's specifically designed to reinforce chines, hull-to-deck corners, bulkhead joints, and similar high-stress applications where preventing hairline crack development is crucial. The woven construction provides a superior strength-to-weight ratio and excellent conformability around curves and tight corners. Key Benefits: High Tensile Strength: Resists crack development and structural stress in critical areas Abrasion Resistance: Protects high-wear surfaces from damage and deterioration Excellent Wet-Out: Woven construction allows epoxy to saturate quickly and completely Conformable: Easily wraps around curves, corners, and irregular shapes Precise Width: 2-inch width perfect for narrow chines, tight corners, and detailed work Economical Coverage: 50-yard roll provides ample material for substantial projects Common Applications: Reinforcing narrow chines and hull corners Strengthening hull-to-deck joints and seams Bulkhead tabbing and structural bonding Repairing and reinforcing high-stress areas Abrasion protection for wear-prone edges Crack prevention in structural joints and corners Detailed reinforcement work requiring precision placement Whether you're building new structures or reinforcing existing ones, this woven fiberglass tape delivers the strength and quality needed for long-lasting, professional results in demanding marine environments. Part Number: 729UPC Code: 811343011789

WEST SYSTEM 879-2 Fiberglass & Repair This professional-grade release fabric is an essential component for vacuum bagging operations and advanced hand lay-up applications. The 60-inch width and 2-yard length provide ample coverage for medium-sized projects, while the specialized fabric construction ensures clean release and optimal surface preparation. Vacuum Bagging Applications: In vacuum bagging operations, this release fabric serves as a critical barrier between the breather material, vacuum bag, and your laminate. It allows excess epoxy to bleed through while preventing the breather and bag from bonding to your work. After cure, the fabric peels away cleanly along with any excess resin, leaving behind a perfectly textured surface that's ready for secondary bonding or finishing without additional surface preparation. Enhanced Hand Lay-Up Performance: For hand lay-up applications, release fabric allows you to apply significantly more squeegee pressure to achieve better fiber wet-out and consolidation without damaging the laminate surface. It also protects your lay-up from contamination during the cure process, ensuring consistent, professional results. Red Tracer System: The integrated red tracer provides instant visual confirmation if any peel ply remains on the laminate after removal. This quality control feature helps ensure complete removal and prevents bonding issues in subsequent operations. Key Features: Clean Release: Peels easily from cured laminates without tearing or leaving residue Optimal Surface Texture: Leaves a smooth, textured surface ideal for bonding or finishing High Temperature Tolerance: Handles post-cure temperatures up to 410°F (210°C) Red Tracer: Visual indicator shows any peel ply left behind on the laminate Versatile Use: Works in both vacuum bagging and hand lay-up applications Wide Coverage: 60-inch width accommodates large panels and components Common Applications: Vacuum bagging composite laminates Hand lay-up fiberglass work requiring high consolidation Preparing surfaces for secondary bonding Protecting laminates during cure Creating textured surfaces for paint or gelcoat adhesion Whether you're performing advanced vacuum bagging or precision hand lay-up work, this release fabric delivers the clean release and surface quality that professional composite fabrication demands. Part Number: 879-2UPC Code: 811343012465

WEST SYSTEM 733 Fiberglass & Repair This professional-grade 9 oz woven E-glass fabric tape is engineered for structural reinforcement applications where strength, durability, and clean edges are essential. The 6-inch width and 50-yard length provide substantial coverage for large-scale projects, while the bound edges eliminate fraying and ensure professional-quality results. Structural Reinforcement: When bonded with WEST SYSTEM Epoxy, this versatile fiberglass tape delivers exceptional tensile strength to critical structural areas. It's specifically designed to reinforce chines, hull-to-deck corners, bulkhead joints, and similar high-stress applications where preventing hairline crack development is crucial. The woven E-glass construction provides a superior strength-to-weight ratio and excellent conformability around curves and corners. Bound Edges for Professional Results: Unlike raw-edge fiberglass cloth, this tape features factory-bound edges that prevent fraying during handling and application. This means cleaner installations, less waste, and a more professional appearance—especially important for visible structural work or areas that will receive minimal fairing. Key Benefits: High Tensile Strength: Resists crack development and structural stress Abrasion Resistance: Protects high-wear areas from damage Bound Edges: Eliminates fraying for cleaner, more professional installations Excellent Wet-Out: Woven construction allows epoxy to saturate quickly and completely Conformable: Easily wraps around curves, corners, and irregular shapes Versatile Width: 6-inch width ideal for chines, corners, and structural joints Common Applications: Reinforcing chines and hull corners Strengthening hull-to-deck joints Bulkhead tabbing and structural bonding Repairing and reinforcing high-stress areas Abrasion protection for wear-prone surfaces Crack prevention in structural joints This 50-yard roll provides ample material for substantial projects, making it an economical choice for boatyards, professional builders, and serious DIY enthusiasts. Whether you're building new or reinforcing existing structures, this woven fiberglass tape delivers the strength and quality you need for long-lasting results. Part Number: 733UPC Code: 811343011857

WEST SYSTEM 6552-QT Fiberglass & Repair G/Flex 655 Epoxy Adhesive Repair Kit, 2 Quarts G/Flex 655 is a toughened, resilient liquid epoxy adhesive engineered to create permanent waterproof bonds across an exceptionally wide range of materials. This 2-quart repair kit is perfect for medium-sized projects where you need the proven performance of G/Flex without committing to larger quantities. Engineered Flexibility for Demanding Applications: With a modulus of elasticity of 150,000 PSI, G/Flex occupies the ideal middle ground between rigid epoxies and flexible sealants. It's more flexible than standard epoxies and polyester resins, yet significantly stiffer than adhesive sealants. This engineered flexibility allows it to create structural bonds that absorb the constant stress of expansion, contraction, shock, and vibration without cracking or failing—critical for marine environments where materials are constantly moving. Bonds What Others Can't: G/Flex excels at bonding dissimilar materials with different expansion rates and surface properties. It creates reliable, permanent waterproof bonds between fiberglass, ceramics, metals, plastics, composites, and even damp or difficult-to-bond woods. This versatility eliminates the need for multiple specialized adhesives and opens up repair possibilities that would be impossible with conventional epoxies. Versatile & Easy to Use: The simple 1-to-1 mix ratio by volume eliminates measurement errors and makes mixing straightforward. G/Flex can be modified with WEST SYSTEM fillers and additives for custom applications, and it effectively wets out fiberglass tapes and fabrics for composite repairs and reinforcement work. Working Time & Cure Schedule: Working Time: 45 minutes at room temperature for positioning and adjustment Initial Cure: 7 to 10 hours for handling strength Full Cure: 24 hours for maximum strength and performance Key Applications: Bonding hull-to-deck joints and structural components Repairing aluminum boats and metal-to-fiberglass connections Adhering to plastic hardware, PVC, and composite materials Bonding ceramics for through-hull fittings Structural repairs requiring flexibility and impact resistance Laminating fiberglass cloth for reinforcement This 2-quart kit provides the perfect amount for substantial repairs and medium-sized projects. When you need a liquid epoxy adhesive that can handle the toughest bonding challenges across multiple materials in demanding marine environments, G/Flex 655 delivers proven, reliable performance. Part Number: 6552-QTUPC Code: 811343012243

WEST SYSTEM 406-B Fiberglass & Repair 406 Colloidal Silica is the most versatile epoxy thickening additive in the West System lineup, engineered to give you precise control over epoxy viscosity for a wide range of marine repair and construction applications. This professional-grade 10 lb bulk container provides exceptional value for boatyards, serious DIYers, and contractors who demand consistent, reliable performance. Superior Thickening Performance: When blended into epoxy resin, 406 Colloidal Silica transforms liquid epoxy into a non-sagging paste that stays exactly where you apply it. This makes it ideal for vertical and overhead joints where runoff would otherwise be a problem. The smooth, creamy consistency spreads easily and creates professional-quality bonds and fillets without voids or air pockets. Exceptional Strength & Versatility: Unlike lightweight fairing fillers, 406 is a high-strength structural additive that creates incredibly strong bonds and fillets. It's the go-to choice for general epoxy bonding, filleting, and any application where maximum strength is required. The smooth mixture it produces is easy to work with and finishes beautifully. Key Applications: Structural Bonding: Creates maximum-strength adhesive bonds for critical joints Filleting: Produces smooth, strong fillets for tabbing bulkheads and reinforcing corners Gap Filling: Fills voids and gaps without sagging or running Fairing Compound Enhancement: Blend with lightweight fillers to improve strength, abrasion resistance, and workability Vertical & Overhead Work: Prevents epoxy runoff on challenging surfaces Enhanced Fairing Compounds: One of 406's most valuable features is its ability to improve other fillers. When combined with lightweight fairing compounds, it significantly increases their strength, abrasion resistance, and workability, resulting in a tougher, smoother surface that's easier to sand and finish. Universal Compatibility: 406 Colloidal Silica blends seamlessly into WEST SYSTEM 105 Epoxy Resin with any 200 Series Hardener, G/flex Epoxy 650, or G/5 Five-Minute Adhesive, giving you maximum flexibility across your entire epoxy toolkit. Whether you're building, repairing, or reinforcing, 406 Colloidal Silica delivers the strength, versatility, and ease of use that marine professionals rely on for critical applications. Part Number: 406-BUPC Code: 811343011529

WEST SYSTEM 502-8 Fiberglass & Repair 502 Black Pigment is an epoxy-based liquid colorant designed to tint your epoxy mixture a rich, even black color. This professional-grade pigment is ideal for creating a uniform color base for repair work, helping you identify surface imperfections during fairing and preparation, and providing a consistent foundation for your final finish system. Quality Control Through Color: One of the most valuable benefits of using black pigment is its ability to highlight surface flaws and imperfections that might otherwise go unnoticed. The dark, uniform color makes it easy to spot low areas, pinholes, and surface irregularities during the fairing process, ensuring you achieve a perfectly smooth surface before applying your final finish coats. Versatile Color Base: Whether you're performing structural repairs, fairing large areas, or creating a consistent color base for subsequent coatings, 502 Black Pigment provides even, predictable coloration throughout your epoxy mixture. The liquid formulation blends easily and disperses uniformly, eliminating streaks and color variations. Important Considerations: While pigmented epoxy provides excellent color consistency and helps with surface preparation, it's important to note that cured, pigmented epoxy surfaces are not final finish surfaces. They require an additional paint or UV filter coating for proper ultraviolet protection to prevent degradation from sun exposure. Key Features: Even Black Coloration: Creates uniform color throughout the epoxy mixture Highlights Imperfections: Makes surface flaws visible for better fairing results Easy to Use: Liquid formulation blends quickly and evenly Universal Compatibility: Works with WEST SYSTEM 105 Epoxy Resin/200 Series Hardeners, G/flex 650, or G/5 Five-Minute Adhesive Professional Results: Provides a consistent color base for final finish systems Common Applications: Fairing and surface preparation work Structural repairs requiring color coding Creating uniform color bases for painted surfaces Identifying surface imperfections during finishing Color-matching repairs to existing black components Remember to protect all pigmented epoxy surfaces with a quality paint or UV coating system for long-term durability and appearance. Part Number: 502-8UPC Code: 811343014933

WEST SYSTEM 650-2G Fiberglass & Repair G/flex 650 is a toughened, resilient liquid epoxy system engineered to excel where traditional rigid epoxies fail. This professional-grade 2-gallon kit delivers permanent waterproof bonds across an exceptionally wide range of materials, making it the ultimate solution for complex marine repairs and construction projects involving dissimilar substrates. Engineered Flexibility for Real-World Conditions: G/flex occupies the sweet spot between rigid epoxies and flexible sealants. It's more flexible than standard epoxies and polyester resins, yet significantly stiffer than adhesive sealants. This unique balance allows it to create structural bonds that absorb the constant stress of expansion, contraction, shock, and vibration without cracking or delaminating—critical for marine environments where materials are constantly moving. Bonds What Others Can't: G/flex excels at bonding dissimilar materials with different expansion rates and surface properties. It creates reliable, permanent bonds between fiberglass, ceramics, metals, plastics, composites, and even damp or difficult-to-bond woods. This versatility eliminates the need for multiple specialized adhesives and opens up repair possibilities that would be impossible with conventional epoxies. Key Performance Features: Permanent Waterproof Bonds: Fully cured epoxy is completely waterproof and marine-grade durable Toughened Formula: Absorbs impact and stress without brittle failure Bonds Damp Surfaces: Works on wet and difficult-to-bond woods, expanding your working conditions Simple 1:1 Mix Ratio: Easy mixing by volume eliminates measurement errors Fully Compatible: Can be modified with WEST SYSTEM fillers and additives for custom applications Fiberglass Laminating: Effectively wets out fiberglass tapes and fabrics for composite repairs Versatile Applications: Bonding hull-to-deck joints and structural components Repairing aluminum boats and metal-to-fiberglass connections Adhering to plastic hardware, PVC, and composite materials Bonding ceramics for through-hull fittings and hardware Structural repairs requiring flexibility and impact resistance Laminating fiberglass cloth for reinforcement and repairs This 2-gallon kit provides substantial coverage for professional boatyards, contractors, and serious DIY enthusiasts tackling large-scale projects. When you need a liquid epoxy that can handle the toughest bonding challenges across multiple materials in demanding marine environments, G/flex 650 delivers proven, reliable performance. Part Number: 650-2GUPC Code: 811343011970

WEST SYSTEM 420-36 Fiberglass & Repair 420 Aluminum Powder is a specialized epoxy additive designed to enhance the protective properties of your epoxy coatings. When blended into WEST SYSTEM epoxy, this fine aluminum powder creates a durable, moisture-resistant barrier that significantly improves surface hardness and abrasion resistance—ideal for marine applications where surfaces face constant wear and environmental exposure. Enhanced Surface Protection: Adding 420 Aluminum Powder to your epoxy coating transforms it into a tougher, more resilient surface. The aluminum particles increase hardness and abrasion resistance, helping your coating withstand the rigors of marine use, including foot traffic, equipment contact, and general wear. The improved moisture resistance provides an additional layer of protection against water intrusion, critical for long-term durability in wet environments. UV Protection & Paint Compatibility: 420 Aluminum Powder provides limited ultraviolet light protection for epoxy surfaces that won't be covered with additional coatings. This makes it valuable for areas where you need temporary UV resistance or where paint isn't practical. It also serves as an excellent base coat for subsequent painting, improving paint adhesion and creating a more durable foundation for topcoat systems. Key Benefits: Increased Hardness: Creates a tougher, more wear-resistant surface Superior Abrasion Resistance: Withstands foot traffic and equipment contact Enhanced Moisture Barrier: Improves water resistance for long-term protection UV Protection: Provides limited ultraviolet light resistance Paint-Ready Surface: Excellent base for topcoat systems Easy to Use: Simply add to any mixed WEST SYSTEM 105/200 Series Hardener combination Common Applications: Deck coatings requiring extra durability High-traffic areas needing abrasion resistance Moisture barrier coatings for bilges and wet areas Base coats for painted surfaces Protective coatings for exposed epoxy work This 36 oz container provides ample material for multiple coating projects. Whether you're protecting a deck, creating a durable base coat, or enhancing moisture resistance, 420 Aluminum Powder delivers measurable performance improvements to your epoxy coatings. Part Number: 420-36UPC Code: 811343012960

WEST SYSTEM 727-20 Fiberglass & Repair This professional-grade biaxial fiberglass tape delivers superior strength and finish quality for demanding marine repair and reinforcement projects. Engineered with 17 oz non-woven E-glass fabric, this tape features a unique dual-layer construction that outperforms traditional woven materials. Advanced Construction: Two layers of ±45° fiber orientation are precisely held together by light stitching, creating a stable, easy-to-handle material that conforms smoothly to complex curves and contours. The flat, non-crimped fiber design eliminates the waviness found in woven fabrics, resulting in a smoother surface finish with significantly reduced print-through. Performance Benefits: Superior Stiffness: Non-crimped fibers provide higher structural rigidity compared to woven fabrics Smooth Finish: Reduced print-through means less sanding and fairing work Excellent Wet-Out: Non-woven construction allows resin to saturate quickly and completely Versatile Application: Ideal for structural repairs, tabbing, and reinforcing critical areas Conformability: Easily wraps around curves and irregular shapes without bunching Common Applications: Hull and deck repairs Bulkhead tabbing and reinforcement Strengthening high-stress areas Laminate build-up for added thickness Structural bonding applications Whether you're performing critical structural repairs or reinforcing key components, this biaxial tape provides the strength and workability professionals demand with a finish quality that saves time in post-application fairing. Part Number: 727-20UPC Code: 811343011741