--- product_id: 5397946 title: "105 Resin/205 Fast Hardener" brand: "west system" price: "€ 144.19" currency: EUR in_stock: true reviews_count: 8 category: "West System" url: https://www.desertcart.hr/products/5397946-105-resin-205-fast-hardener store_origin: HR region: Croatia --- # 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:** € 144.19 **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?** € 144.19 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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 Product description Popular Uses of WEST SYSTEM Epoxy Bonding & Filleting WEST SYSTEM Epoxy is excellent for structural bonding and fillets. It can be easily thickened with a number of fillers to modify consistency and strength. There are two types of structural bonding that can be done with epoxy. TWO-STEP BONDING is the preferred method for most situations because it promotes maximum epoxy penetration into the bonding surface and prevents epoxy-starved joints. SINGLE-STEP BONDING is appropriate when joints will have minimal loads and excess epoxy absorption into porous surfaces is not a problem. In both cases, epoxy bonds best when it is worked into the surface with a roller or brush. Coating, Laminating & Clear Finishing COATING AND LAMINATING are popular uses of WEST SYSTEM Epoxy. Epoxy wets out fiberglass cloth, protecting the substrate while letting its beauty shine through. We recommend WEST SYSTEM 105 Resin with blush-free, water-clear 207 Special Clear Hardener for bright finishes and clear coats. COATING involves rolling the epoxy onto a surface with a foam roller, applying it with a brush, or spreading the epoxy over the surfaces with a plastic spreader. . There are two methods for laminating with fiberglass and epoxy. THE DRY METHOD refers to placing the cloth over a dry surface, wetting the cloth with epoxy and spreading the epoxy over the cloth, smoothing it as you go. THE WET METHOD involves applying the cloth to an epoxy-coated surface after the wet-out coat becomes tacky, which helps it cling to vertical or overhead surfaces. This method makes it more difficult to position the cloth, so the dry method is the preferred, especially when using with thinner cloth. Clear Casting & Pouring CASTING AND POURING are best done with WEST SYSTEM 105 Resin and 207 Special Clear Hardener. AVOIDING UNCONTROLLED EXOTHERM is important, as this heat reaction can quickly spoil the casting. Epoxy cures by exothermic (heat) reaction. That heat must be kept under control when when creating a thick casting (greater than ¼”). For thick castings, add epoxy in multiple layers . When the first pour is tacky like the back of masking tape, a second pour can be made. When the epoxy cures enough to become tacky, it means the previous layer has begun to cool down and will not contribute heat to the next layer. Adding another layer at this stage allows you to skip any surface prep. If the poured epoxy casting cures past the tacky stage, allow the epoxy to finish curing then sand ot dull and clean the surface before applying the next epoxy layer. This will ensure good adhesion between layers. Versatile, reliable WEST SYSTEM products WEST SYSTEM offers high-quality epoxy resins, hardeners, fillers, and additives. Developed by our in-house chemists, our formulations are proprietary, structural, and marine grade. These epoxies have set the standard for epoxy quality in the marine industry and beyond since 1969. Versatile WEST SYSTEM Epoxy meet the highest standards for reliability, consistency, and product support. Fiberglass Boat Repairs & Construction This vintage 15' Larson Thunderhawk was repaired with WEST SYSTEM Epoxy. Damage from collisions, groundings, the forces of nature, and aging make it common for fiberglass boats to need repairs. Effectively repairing a fiberglass boat requires a superior structural adhesive, that adheres to polyester resin, fiberglass, wood, metal and other materials. Unlike polyester resin which can shrink from 5% to 8%, creating stress concentrations at the repair joint, epoxy doesn’t shrink. It's also a more effective moisture barrier. Epoxy forms a tenacious mechanical bond with cured polyester and other materials in secondary bonding. Since epoxy is more durable than polyester, the epoxy repair may be even stronger than the original structure. Ease of use, ready availability, safety, and easy access to how-to information makes WEST SYSTEM Epoxy excellent for fiberglass boat repair. Wooden Boat Construction & Repairs This strip canoe was built with WEST SYSTEM Epoxy. Wood is the primary building material for many of today’s most durable and most beautiful boats, whether canoes, kayaks, dories, sailboats or power boats. Many of the wood/epoxy construction techniques that have made modern wooden boats so successful can also be applied to the repair of older wooden boats with excellent results. Gougeon Brothers, Inc., the company that has been formulating and manufacturing WEST SYSTEM Epoxies since 1969. They pioneered the use of epoxy to enhance wood's natural structural properties. Ease of use, ready availability, safety and easy access to instructional materials makes WEST SYSTEM Epoxy a great choice for wooden boat construction and repairs. Furniture & Crafts The Eat a Peach Tribute Guitar using marquetry skills and WEST SYSTEM Epoxy. Whether you're creating a river table, casting jewelry and works of art, making high-end knives, repairing sporting equipment, creating sculptures for public spaces, designing cosplay props, or building or repairing musical instruments, WEST SYSTEM Epoxy is versatile and reliable. Woodworkers and creators of all kinds depend on WEST SYSTEM Epoxy. Home Repairs & Improvements The detail work on this Victorian home was repaired with WEST SYSTEM Epoxy. Homeowners rely on WEST SYSTEM Epoxy because it's versatile, reliable, readily available, consistent, and offers excellent instructional materials. WEST SYSTEM customers have used it to create spiral staircases, grand entry columns, and cherry wood basins. They've used it to build fences, trellises, and planter boxes, and neighborhood mini-libraries that can withstand decades outdoors. And to repair everything from porches and wooden window sashes to fiberglass tub and shower surfaces. Ease of use, ready availability, safety, and easy access to how-to information makes WEST SYSTEM Epoxy an ideal adhesive and coating for lasting home repairs. WEST SYSTEM Product Selection Guide How to choose the right WEST SYSTEM Epoxy products for your project 1. Start with 105 Epoxy Resin, the basic ingredient of all WEST SYSTEM Epoxy compounds. Use 300 Mini Pumps for convenient and accurate metering. 2. Mix with one of four WEST SYSTEM hardeners. Select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working. 3. Add one of six WEST SYSTEM fillers to thicken the mixture as needed. Select a filler for its handling characteristics or cured physical properties. Or, add WEST SYSTEM additives to provide specific coating properties. WEST SYSTEM pigments can be used to change the epoxy's color. An ISO 9001:2015 certified company Founded in 1969, Gougeon Brothers, Inc. (GBI) formulates and manufactures WEST SYSTEM products. In 2020, NSF International recertified GBI's ISO 9001:2015 status, which ensures consistency in epoxy formulation, production, packaging, and instructional materials. 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 | #58,905 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #62 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 223 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 | | Number of Pieces | 1 | | Other Special Features of the Product | Waterproof | | Part Number | 205B | | Special Feature | Waterproof | | Specific Uses For Product | Tile Repair | | UPC | 811343010577 780333707172 799916783816 | | Unit Count | 814 Milliliters | | Viscosity Level | 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) ![105 Resin/205 Fast Hardener - Image 2](https://m.media-amazon.com/images/I/81ZnL4CXwaL.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.hr/products/5397946-105-resin-205-fast-hardener](https://www.desertcart.hr/products/5397946-105-resin-205-fast-hardener) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-14*