--- product_id: 57887494 title: "Fiberglass Polyester Resin Kit, 1 Gallon" brand: "true composites" price: "€ 211.73" currency: EUR in_stock: true reviews_count: 13 category: "True Composites" url: https://www.desertcart.sk/products/57887494-fiberglass-polyester-resin-kit-1-gallon store_origin: SK region: Slovakia --- # Marine-grade durability Complete resin + hardener kit Fast curing formula Fiberglass Polyester Resin Kit, 1 Gallon **Brand:** true composites **Price:** € 211.73 **Availability:** ✅ In Stock ## Summary > ⚡ Fix it fast, fix it strong — the pro’s choice for flawless fiberglass! ## Quick Answers - **What is this?** Fiberglass Polyester Resin Kit, 1 Gallon by true composites - **How much does it cost?** € 211.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/57887494-fiberglass-polyester-resin-kit-1-gallon) ## Best For - true composites enthusiasts ## Why This Product - Trusted true composites brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid, Tack-Free Finish:** Balanced formula guarantees fast curing with excellent adhesion and a smooth, tack-free surface. - • **Versatile Repair Powerhouse:** Perfect for boats, automotive fiberglass, surfboards, molds, and composite fabrication projects. - • **Trusted by Pros & DIYers Alike:** Made in the USA and favored by marine repair shops and fabricators for dependable, high-performance results. - • **All-in-One Resin & Hardener Kit:** Includes 1 gallon of polyester resin plus MEKP catalyst for seamless mixing and reliable curing every time. - • **Professional Marine-Grade Strength:** Engineered for superior fiberglass repair and marine restoration, ensuring long-lasting structural integrity. ## Overview The True Composites Fiberglass Polyester Resin Kit delivers professional-grade marine polyester resin combined with MEKP hardener in a convenient 1-gallon kit. Designed for fast curing and superior adhesion, it’s ideal for fiberglass repairs, marine restoration, and composite fabrication. Trusted by both DIY enthusiasts and industry pros, this USA-made kit ensures durable, tack-free finishes across a wide range of applications. ## Description Buy True Composites Fiberglass Polyester Resin Kit, 1 Gallon | Includes MEKP hardener for boat, fiberglass & composite repair.: Sealants - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Great value - Great price and have really liked how this resin wetted out my fiberglass Matt. Kicker cured as expected- overall very happy. Review: makes a great speakerbox. - this worked perfect for building a custom speaker box out of fiberglass, i probably used way more hardener than i needed to as i only have about 20% left with 40% of the resin left but overall i'm very happy with the product, much better price than buying local in quart sizes. ## Features - PROFESSIONAL MARINE GRADE RESIN High performance polyester laminating resin engineered for fiberglass repair, marine restoration, composite fabrication, and structural reinforcement applications. - COMPLETE RESIN & HARDENER KIT Includes one gallon of polyester fiberglass resin and MEKP catalyst hardener for efficient mixing, smooth application, and dependable curing performance. - FAST CURING & TACK FREE FINISH Balanced formula delivers reliable curing performance with excellent fiberglass wet out, strong adhesion, and tack free results under proper application conditions. - MULTIPURPOSE REPAIR APPLICATIONS Ideal for boat repair, automotive fiberglass repair, molds, FRP fabrication, surfboards, wood reinforcement, and composite construction projects. - TRUSTED BY DIYERS & PROS Manufactured in the USA and trusted by marine repair shops, fiberglass fabricators, and restoration professionals seeking dependable long lasting performance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077YQTXJQ | | Best Sellers Rank | #42,125 in Automotive ( See Top 100 in Automotive ) #182 in Automotive Sealants #1,599 in Oils & Fluids | | Brand | TRUE COMPOSITES | | Customer Reviews | 4.6 4.6 out of 5 stars (764) | | Date First Available | June 22, 2018 | | Item Weight | 10 pounds | | Item model number | 5 | | Manufacturer | True Composites | | Manufacturer Part Number | RESPOLY1GK | | Package Dimensions | 12.9 x 8 x 5 inches | ## Images ![Fiberglass Polyester Resin Kit, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/71T23mFOQwL.jpg) ## Questions & Answers **Q: Is the 2 oz of hardener provided enough for the gallon of resin?** A: Yes ! **Q: Hi. Is this can fix soft spot on boat floor** A: Well......Not if you want to fix it right. The soft spot in a boat floor can...and usually means the the wood under the floor is rotted and possibly even the stringers. If you put new matted fiberglass and resin over a soft spot in a boat floor it will most likely crack and bust when you walk in it. I just replaced a complete boat floor and stringers. I did use this product along with fiberglass mat to install new stringers and over the top of the new plywood floor. So far so good but I have not put the boat back on the water yet to see how it all holds up. Product is fairly simple to use but be sure to use a respirator and gloves. Good luck! **Q: Is this resin good for mold making, and what's the pot life time?** A: Very good **Q: What is the cure time?** A: Well, it depends. It is temperature, humidity, and mixture dependent. Two hours generally is enough time to cure, but I've been giving it 4 hours minimum....often over night. Once mixed, its very easy to work and getting really good results. I have not yet figured out the best means to mix it consistently because the varying climatological conditions in my non-climate controlled garage require different ratios. I will say this though, I love this product compared to other resin products I've used. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value *by M***N on August 16, 2026* Great price and have really liked how this resin wetted out my fiberglass Matt. Kicker cured as expected- overall very happy. ### ⭐⭐⭐⭐⭐ makes a great speakerbox. *by M***Y on October 6, 2025* this worked perfect for building a custom speaker box out of fiberglass, i probably used way more hardener than i needed to as i only have about 20% left with 40% of the resin left but overall i'm very happy with the product, much better price than buying local in quart sizes. ### ⭐⭐⭐⭐⭐ This is a high quality product! *by C***S on June 8, 2020* I originally bought a gallon of this for my first ever fiberglass project. It wets out the mat quickly and laminated layers go together without problems. I ran out and didn't want to wait for more so I went to the big box store and bought the 3_Bon_o brand that you can get everywhere. Whoa, that was a major mistake! For some reason it took a ton of effort to get it to wet out the mat and even once it did for some reason it doesn't stick well. I spent a ton of time going back over spots where huge air bubbles formed for no reason at all. Often more than 5 times on the same spot. It also gelled very quickly compared to this brand. I had to go back with a grinder to get all the bubbles out of my work. I stopped using it and just ordered some more of this. I know now for future projects I need to get a higher quality product because it's now apparent that not all resins are created equal. Guess I got lucky on my first try and I recommend this to anyone else wanting to do fiberglass work. ## Frequently Bought Together - True Composites Fiberglass Resin Polyester Resin Marine Grade Resin 1 Gallon with MEKP Hardener Polymer Resin Fiberglass Repair Kit Laminating Resin for Wood Boat Building and Repair - Fiberglass Cloth,6oz 50sq Feet E-Glass Plain Weave Glass Fiber Cloth,12 Feet*50 Inches Woven Fabric for Boat RC Plane Auto Surfboard Tub Pool Repair - Fiberglass Roller Tools Kit, 3pcs Fiberglass Resin Laminating Bubble Roller Set for Tub Shower Bathtub Boat Repair --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/57887494-fiberglass-polyester-resin-kit-1-gallon](https://www.desertcart.sk/products/57887494-fiberglass-polyester-resin-kit-1-gallon) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-16*