--- product_id: 679829701 title: "J-B Weld Fiberglass Resin - Quart - Bath, Marine & Auto" brand: "j-b weld" price: "Β₯16158" currency: JPY in_stock: true reviews_count: 5 category: "J B Weld" url: https://www.desertcart.jp/products/679829701-j-b-weld-fiberglass-resin-quart-bath-marine-and-auto store_origin: JP region: Japan --- # 100% waterproof bond 2-hour full cure time multi-surface adhesion J-B Weld Fiberglass Resin - Quart - Bath, Marine & Auto **Brand:** j-b weld **Price:** Β₯16158 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Fix it fast, fix it right β€” waterproof strength that lasts! ## Quick Answers - **What is this?** J-B Weld Fiberglass Resin - Quart - Bath, Marine & Auto by j-b weld - **How much does it cost?** Β₯16158 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/679829701-j-b-weld-fiberglass-resin-quart-bath-marine-and-auto) ## Best For - j-b weld enthusiasts ## Why This Product - Trusted j-b weld brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Rapid 2-Hour Cure:** Get back on track fast with a quick-dry formula that minimizes downtime. - β€’ **Waterproof Durability:** Seals and repairs with a resilient, water-tight finish perfect for marine and bath use. - β€’ **Multi-Material Mastery:** Bonds fiberglass, plastics, metal, concrete, and more for versatile fixes. - β€’ **Pro-Level Repair Confidence:** Trusted by DIYers and pros alike for emergency fixes and long-term durability. - β€’ **Reinforce with Fiberglass Cloth:** Amplify strength and longevity by pairing with fiberglass mat or cloth. ## Overview J-B Weld Fiberglass Resin is a premium two-part resin system designed for fast, waterproof repairs on a variety of materials including fiberglass, plastics, metal, and concrete. With a full cure in just 2 hours and compatibility with fiberglass cloth for reinforced strength, it’s ideal for durable fixes in boats, pools, tubs, and more. Its quick-setting formula demands precision but delivers professional-grade results, making it a must-have for emergency and routine repairs. ## Description J-B Weld Fiberglass Resin is a two-component resin system that provides waterproof, durable repairs to small & large gaps, holes, cracks, and other damage in pools, boats, tub & showers, and more. Use Fiberglass Resin with fiberglass cloth or mat for reinforcement strength and for repairs on holes or gaps Review: Very high quality resin with a short working time - The fibreglass resin is good quality and becomes very hard. Note: I recommend to use 250ml max as the working time is about 5-7 minutes only as it already starts to get gelatinous fast and cannot be used anymore. You need to work very fast and have your fibreglass cut correctly. Important is to roughen the surface correctly before or for reapplying the next day. The instruction is basically very clear and correct and the quality is really good. I only wished the working time to be a little bit longer… Value for money is good. Review: Creates a great bond and gets the job done - I purchased this and fiberglass cloth to make an emergency repair of a 12' tall Skeleton yard decoration. The giant skeleton had fallen over during a nasty surprise thunderstorm and landed on the shoulder. The impact cracked the right arm and shoulder housing and broke several plastic ribs. After failing with epoxy and other plastic adhesives, I switched to a fiberglass solution. Using the Bondo Fiberglass Cloth (20128, 8 Sq Ft) and this resin, I was able to rebuild the broken shell of the plastic bones and harden the shoulder, arms, neck, and ribs like iron. Literally just brushed the resin onto the fiberglass strips and let it cure. I had never worked with either product, so the surprise at the ease of use was extraordinary. The resin brushes on like a thick stain or PVA glue. It bonded with the fiber cloth and created an extremely strong fiberglass shell. I ended up using it to reinforce several other decorations. It does not take much, and even after multiple fixes, I still had a lot of resin left over for emergency repairs. If you need to fix something, especially outdoors, this stuff works amazingly well. I only used it with the fiberglass cloth, so I cannot speak for the resin as a stand-alone product. However, based on how well it worked with the added cloth, I have no doubt it would work just fine as a bonding resin without the cloth. Highly recommend this product for repairs or strengthening. Great for Holiday repairs and rebuilds, especially if you have older models of props and decorations for outdoor display that are no longer sold. ## Features - J-B Weld Fiberglass Resin is a two-component resin system that provides waterproof, durable repairs to small & large gaps, holes, cracks, and other damage in pools, boats, tub & showers, and more. Use Fiberglass Resin with fiberglass cloth or mat for reinforcement strength and for repairs on holes or gaps - Repairs holes and cracks on fiberglass, rigid plastics, metal, concrete & more - Dries in 2 hours - Great for boats, pools, tubs & showers - Use with fiberglass cloth and mat ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CGKHL5TR | | Best Sellers Rank | #13,902 in Automotive ( See Top 100 in Automotive ) #62 in Automotive Fillers, Adhesives & Sealants | | Brand | J-B Weld | | Brand Name | J-B Weld | | Compatible Material | Fiberglass, Rigid Plastics, Metal, Concrete, More | | Customer Reviews | 4.7 out of 5 stars 583 Reviews | | Full Cure Time | 2 Hours | | Included Components | Fiberglass Resin and Hardener | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | Body Filler | | Item form | Liquid | | Item package quantity | 1 | | Manufacturer | J-B Weld | | Material | Resin | | Material Type | Resin | | Model | 40122 | | Other Special Features of the Product | Diverse Material Bonding | | Part Number | 40122 | | Special features | Diverse Material Bonding | | Specific Uses For Product | Carpentry, Countertop, Flooring, Glass, Masonry, Repair, Tile Repair, Wall Repair, Woodworking | | Specific uses for product | Carpentry, Countertop, Flooring, Glass, Masonry, Repair, Tile Repair, Wall Repair, Woodworking | | UPC | 043425401229 | | Unit Count | 1 Count | | Volume | 0.95 Liters | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** J-B Weld - **Item Form:** Liquid - **Material:** Blend - **Special Feature:** Diverse Material Bonding - **Specific Uses For Product:** Carpentry, Countertop, Flooring, Glass, Masonry, Repair, Tile Repair, Wall Repair, Woodworking ## Images ![J-B Weld Fiberglass Resin - Quart - Bath, Marine & Auto - Image 1](https://m.media-amazon.com/images/I/81z98SBNvaL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very high quality resin with a short working time *by V***R on 29 June 2026* The fibreglass resin is good quality and becomes very hard. Note: I recommend to use 250ml max as the working time is about 5-7 minutes only as it already starts to get gelatinous fast and cannot be used anymore. You need to work very fast and have your fibreglass cut correctly. Important is to roughen the surface correctly before or for reapplying the next day. The instruction is basically very clear and correct and the quality is really good. I only wished the working time to be a little bit longer… Value for money is good. ### ⭐⭐⭐⭐⭐ Creates a great bond and gets the job done *by B***X on 21 June 2025* I purchased this and fiberglass cloth to make an emergency repair of a 12' tall Skeleton yard decoration. The giant skeleton had fallen over during a nasty surprise thunderstorm and landed on the shoulder. The impact cracked the right arm and shoulder housing and broke several plastic ribs. After failing with epoxy and other plastic adhesives, I switched to a fiberglass solution. Using the Bondo Fiberglass Cloth (20128, 8 Sq Ft) and this resin, I was able to rebuild the broken shell of the plastic bones and harden the shoulder, arms, neck, and ribs like iron. Literally just brushed the resin onto the fiberglass strips and let it cure. I had never worked with either product, so the surprise at the ease of use was extraordinary. The resin brushes on like a thick stain or PVA glue. It bonded with the fiber cloth and created an extremely strong fiberglass shell. I ended up using it to reinforce several other decorations. It does not take much, and even after multiple fixes, I still had a lot of resin left over for emergency repairs. If you need to fix something, especially outdoors, this stuff works amazingly well. I only used it with the fiberglass cloth, so I cannot speak for the resin as a stand-alone product. However, based on how well it worked with the added cloth, I have no doubt it would work just fine as a bonding resin without the cloth. Highly recommend this product for repairs or strengthening. Great for Holiday repairs and rebuilds, especially if you have older models of props and decorations for outdoor display that are no longer sold. ### ⭐⭐⭐⭐⭐ Solid 10, +1 for extra effort *by R***B on 18 July 2026* Never bought an item that arrived smelling "fragrant" or "acceptable". Overall, the product itself was a 10/10, same as the shelves at any hardware store. Whoever spritzed my package with automatic ambiance deserves a raise. Would recommend. 11/10 if it's the product you know you need. ## Frequently Bought Together - J-B Weld Fiberglass Resin - Quart - Bath, Marine & Auto - Fibre Glast Fiberglass Chopped Strand Mat – Strong, Easy to Use & Lightweight Glass Fiber for Structural Reinforcement & Repair Kits β€” 1.5 Ounces, 4 Inches Wide, 10 Yard Long Roll, Made in USA - Fiberglass Roller Tools Kit, 3pcs Fiberglass Resin Laminating Bubble Roller Set for Tub Shower Bathtub Boat Repair --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/679829701-j-b-weld-fiberglass-resin-quart-bath-marine-and-auto](https://www.desertcart.jp/products/679829701-j-b-weld-fiberglass-resin-quart-bath-marine-and-auto) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-14*