--- product_id: 5397946 title: "105 Resin/205 Fast Hardener" brand: "west system" price: "€ 153.54" currency: EUR in_stock: true reviews_count: 8 category: "West System" url: https://www.desertcart.fr/products/5397946-105-resin-205-fast-hardener store_origin: FR region: France --- # High-strength, moisture-resistant Fast 6-8 hr cure time Cures down to 40°F (4°C) 105 Resin/205 Fast Hardener **Brand:** west system **Price:** € 153.54 **Availability:** ✅ In Stock ## Summary > ⚡ Cure fast, bond stronger, and never wait to create. ## Quick Answers - **What is this?** 105 Resin/205 Fast Hardener by west system - **How much does it cost?** € 153.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/5397946-105-resin-205-fast-hardener) ## Best For - west system enthusiasts ## Why This Product - Trusted west system brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cold Weather Ready:** Works flawlessly even at chilly 40°F. - • **Precision Mix Ratio:** Optimized 5:1 resin to hardener for peak performance. - • **Rapid Room-Temp Cure:** Get strong bonds in just hours, not days. - • **Waterproof Durability:** Built to withstand moisture and keep your work solid. - • **Versatile Customization:** Easily tailored with fillers and pigments for any project. ## Overview West System 205-B Fast Hardener is a medium-viscosity epoxy curing agent designed for rapid curing at room temperature and as low as 40°F. When mixed with West System 105 Resin at a 5:1 ratio, it forms a rigid, high-strength, moisture-resistant bond ideal for structural bonding, coating, and fiberglass applications. With a pot life of 9-12 minutes and full cure in 1-4 days, it’s perfect for professionals and hobbyists needing fast, reliable results in diverse conditions. ## Description Buy West System 205-B Fast Hardener: Painting Supplies - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: West System Products are Great! - West System Products are wonderful for both hobbyists and professionals. Convent package sizes make it easy to buy the right amount without waste. 205-B is great for cold weather or fast cure needs. Review: Delivery ahead of schedule - Timely delivery of product is always desirable. West systems offers among the best performance for an adhesive and structural epoxy. Not to be confused with a slow cure or high depth of pour product. ## Features - - 205 FAST HARDENER is a medium-viscosity epoxy curing agent. It is useful in a majority of bonding situations, and at lower temperatures. 205 Fast Hardener produces a rapid epoxy cure that develops physical properties quickly at room temperature. - - MIX WITH WEST SYSTEM 105 Resin in a five-part resin to one-part hardener ratio. The resulting cured epoxy is a rigid, high-strength, moisture-resistant solid. The combination of 105 Resin/205 Fast Hardener has excellent bonding and coating properties. - - CURES AT TEMPERATURES as low as 40°F (4°C). Will cure faster at warmer temperatures. Pot life is 9 to 12 Minutes. Cures to a solid state in 6 to 8 hours. Cures to maximum strength in 1 to 4 days. Minimum recommended working temperature is 40°F (4°C). - - PAIR WITH WEST SYSTEM 105-B Epoxy Resin. Blend with with WEST SYSTEM 105 Epoxy Resin at a 5-parts resin to 1-part hardener ratio. - - EASILY MODIFIED with WEST SYSTEM Fillers, Additives, and Pigments to suit the job at hand, whether coating, applying fiberglass, structural bonding, or fairing. Not intended for clear coating. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002NY6SW | | Best Sellers Rank | #70,711 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #70 in Boat Painting Supplies | | Brand | West System | | Brand Name | West System | | Color | Clear | | Compatible Material | Fiberglass | | Container Type | Can | | Customer Reviews | 4.8 out of 5 stars 222 Reviews | | Full Cure Time | 4 Days | | Global Trade Identification Number | 00811343010577 | | Included Components | Epoxy | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | Epoxy | | Item Weight | 2.2 Pounds | | Manufacturer | WEST SYSTEM | | Material | Epoxy | | Material Type | Epoxy | | Model | 205-B | | Other Special Features of the Product | Waterproof | | Special Feature | Waterproof | | Specific Uses For Product | Tile Repair | | UPC | 811343010577 780333707172 799916783816 | | Unit Count | 1.0 Fluid Ounces | | Viscosity | Medium | | Volume | 0.86 Quarts | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** West System - **Item Form:** Liquid - **Material:** Epoxy - **Special Feature:** Waterproof - **Specific Uses For Product:** Tile Repair ## Images ![105 Resin/205 Fast Hardener - Image 1](https://m.media-amazon.com/images/I/81Cx3Y5mmYL.jpg) ## Questions & Answers **Q: how much hardner do i need for 4.35 gallons?** A: The resin and hardener come as a 5 to 1 ratio. The resisnt exactly a gallon, the hardener in I think a 25 oz can goes with a “gallon” of resin so you would need to get five of these 25 oz cans of hardener and you’ll have 2/3 of a can of hardener left when you’ve used up your 4.35 gallons of resin. **Q: I have used Envirotex Lite to coat tiles and it is crystal clear but SO long to cure. Question is if this is crystal clear? And how long to cure?** A: You have to use 207 hardner and 207 resin. Go to West system site and read about clear finish. **Q: Do these containers come full ? appeared to have channellock marks on lid channel and there was hardener on inner lid. Missing 2 inches of product.** A: It doesn't matter. It was obviously opened by someone. Just return it and get another one or a refund. **Q: My set of resin and hardener came today, but the hardener is brownish/redish in color when I pump it out. Is that correct or should I return it?** A: My hardener was slightly brownish when mixing with the resin, but after mixing it would clear up, and it would harden clear as well. If it is very pronounced, you may have a problem, but if it is just a tint that goes away when you mix, that seems to be normal. You may want to do a test on some scrap material to confirm. ## Customer Reviews ### ⭐⭐⭐⭐⭐ West System Products are Great! *by J***. on November 24, 2025* West System Products are wonderful for both hobbyists and professionals. Convent package sizes make it easy to buy the right amount without waste. 205-B is great for cold weather or fast cure needs. ### ⭐⭐⭐⭐⭐ Delivery ahead of schedule *by J***. on June 6, 2024* Timely delivery of product is always desirable. West systems offers among the best performance for an adhesive and structural epoxy. Not to be confused with a slow cure or high depth of pour product. ### ⭐⭐⭐⭐⭐ Worth the expense! *by D***T on March 1, 2025* Outstanding Application every time! ## Frequently Bought Together - West System 205-B Fast Hardener, Epoxy, Liquid, Epoxy Hardener, Clear - Polycell Multi-Purpose Polyfilla Ready Mixed, 1 Kg --- ## 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.fr/products/5397946-105-resin-205-fast-hardener](https://www.desertcart.fr/products/5397946-105-resin-205-fast-hardener) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-04-23*