--- product_id: 15278637 title: "System Three Silica Thickener, 1 Qt Tub, White" brand: "systemthree" price: "£20.30" currency: GBP in_stock: true reviews_count: 10 category: "Systemthree" url: https://www.desertcart.co.uk/products/15278637-system-three-silica-thickener-1-qt-tub-white store_origin: GB region: United Kingdom --- # Water-resistant formula 48-hour full cure time Precise viscosity control System Three Silica Thickener, 1 Qt Tub, White **Brand:** systemthree **Price:** £20.30 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your epoxy game with precision thickening power! ## Quick Answers - **What is this?** System Three Silica Thickener, 1 Qt Tub, White by systemthree - **How much does it cost?** £20.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/15278637-system-three-silica-thickener-1-qt-tub-white) ## Best For - systemthree enthusiasts ## Why This Product - Trusted systemthree brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Master Your Mix:** Easily adjust epoxy thickness for flawless application every time - • **Trusted Quality:** Premium colloidal silica from System Three, engineered for woodworking and repair pros - • **Smooth & Sag-Free:** Creates a high-strength, non-sagging paste perfect for professional repairs - • **Effortless Cleanup:** Safe on skin and surfaces—just mild soap and water needed - • **Versatile Compatibility:** Seamlessly blends with resins, fillers, and fibers for custom formulations ## Overview System Three Silica Thickener is a premium colloidal silica paste designed to control epoxy viscosity with precision. Ideal for woodworking and repair, it creates smooth, high-strength, non-sagging mixtures that cure fully in 48 hours and resist water. Easy to mix and clean, this 1-quart tub delivers professional-grade performance for flawless results. ## Description Established in 1979, System Three has the most comprehensive set of user-friendly epoxies available today and serves a wide variety of customers and industries. Made in the USA, every one of our products is engineered with your next successful project in mind. ROT REPAIR Why replace when you can restore? The EndRot system has everything you need to repair and stop wood deterioration in its tracks. ROT REPAIR Why replace when you can restore? The EndRot system has everything you need to repair and stop wood deterioration in its tracks. ROT REPAIR Visit the Store Visit the Store WOODWORKING Secure joints, protect your masterpieces, and add breathtaking shine with our wide range of woodworking products. WOODWORKING Secure joints, protect your masterpieces, and add breathtaking shine with our wide range of woodworking products. WOODWORKING Visit the Store MARINE For the past four decades, System Three Resins' focus has been to provide the highest quality epoxy products to boatbuilders worldwide. MARINE For the past four decades, System Three Resins' focus has been to provide the highest quality epoxy products to boatbuilders worldwide. MARINE Visit the Store ADHESIVES We offer epoxy adhesives for all projects and environments, ensuring optimal results in adverse conditions. ADHESIVES We offer epoxy adhesives for all projects and environments, ensuring optimal results in adverse conditions. ADHESIVES Visit the Store PASTES & PUTTIES Whether you need to fill a thin crack or re-sculpt a missing piece, we have pastes and putties to complete your project. PASTES & PUTTIES Whether you need to fill a thin crack or re-sculpt a missing piece, we have pastes and putties to complete your project. PASTES & PUTTIES Visit the Store COATINGS Our incredible array of high performance and crystal clear coatings will deliver professional results on your next project. COATINGS Our incredible array of high performance and crystal clear coatings will deliver professional results on your next project. COATINGS Visit the Store CASTING & PIGMENTS From small voids to big rivers, System Three casting resins have been formulated to perform up to the highest standards. CASTING & PIGMENTS From small voids to big rivers, System Three casting resins have been formulated to perform up to the highest standards. CASTING & PIGMENTS Visit the Store Why System Three? We're a Lacey, WA-based company committed to meeting customer needs. Our epoxy products are used everywhere. We have the right tools for the job, whatever it may be. Our Commitment to Our Customers We welcome every new customer, supporting them with accurate product information and detailed instructions for using our products on their specific application needs. Our Commitment to Our Planet Since 1979, System Three has utilized significant amounts of sustainable and renewable materials in our product formulations without compromising performance. Why System Three? We're a Lacey, WA-based company committed to meeting customer needs. Our epoxy products are used everywhere. We have the right tools for the job, whatever it may be. Our Commitment to Our Customers We welcome every new customer, supporting them with accurate product information and detailed instructions for using our products on their specific application needs. Our Commitment to Our Planet Since 1979, System Three has utilized significant amounts of sustainable and renewable materials in our product formulations without compromising performance. Review: Great product - This material works great for stiffening the epoxy resin. I used it to fill holes where a kicker was mounted through the transom and to fill holes on the vertical. Review: Works great. - I find this stuff works great mixed with some Max Bond epoxy. Mix up the epoxy according to the directions and add some of this stuff until its like peanut butter and it makes a glue that, as far as I can tell, never comes apart. Add a little wood flour to the mix and you get a nice filler material too. This stuff is pretty particularized so its best if you use it outside or at least in a garage with the doors open. Not sure what happens if you breathe it in but I'm sure its not a good idea. If you are outside be careful, a good breeze will empty the bucket for you and it'll all be gone. Great product. ## Features - Premium Thickener: Also referred to as colloidal or hydrophilic fumed silica, our silica thickener is an excellent thixotropic agent designed to help control the viscosity of mixed epoxy systems - Measure And Mixing: Mix the amount of resin, Part A, and hardener, Part B, desired, then add silica thickener in increments, and mix thoroughly, stirring from the bottom to the top until the desired consistency is reached - Features: This epoxy thickener easily mixes into epoxy resin systems - Consistency: Silica Thickener can be used alone to create a very smooth, non-sagging, high-strength mixture, but can also be combined with other fillers or fibers to prevent sagging - Cleanup: Clean hands, exposed skin, and work surfaces with mild soap and water ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002K9R51Q | | Best Sellers Rank | #109,949 in Automotive ( See Top 100 in Automotive ) #306 in Automotive Sealants #2,873 in Oils & Fluids | | Brand | SYSTEMTHREE | | Brand Name | SYSTEMTHREE | | Color | White | | Compatible Material | Fiberglass | | Container Type | Pail | | Customer Reviews | 4.6 out of 5 stars 521 Reviews | | Full Cure Time | 48 Hours | | Global Trade Identification Number | 00646697300056 | | Included Components | Thickener - 1 quart tub | | Item Form | Paste | | Item Package Quantity | 1 | | Item Weight | 3.2 ounces | | Manufacturer | System Three Resins, Inc. | | Material | Silica | | Material Type | Silica | | Model | 3105S16 | | Number of Pieces | 1 | | Other Special Features of the Product | High Strength, Non-Sagging, Smooth Consistency, Versatile for Different Fillers | | Part Number | 3105S16 | | Special Feature | High Strength, Non-Sagging, Smooth Consistency, Versatile for Different Fillers | | Specific Uses For Product | Woodworking, Repair | | UPC | 646697300056 | | Unit Count | 32.0 Ounce | | Viscosity Level | High | | Volume | 1 Quarts | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** SYSTEMTHREE - **Specific Uses For Product:** Woodworking, Repair - **Material:** Silica - **Item Form:** Paste - **Color:** White ## Images ![System Three Silica Thickener, 1 Qt Tub, White - Image 1](https://m.media-amazon.com/images/I/61XMcVXMdEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by R***H on April 19, 2026* This material works great for stiffening the epoxy resin. I used it to fill holes where a kicker was mounted through the transom and to fill holes on the vertical. ### ⭐⭐⭐⭐⭐ Works great. *by K***R on September 8, 2023* I find this stuff works great mixed with some Max Bond epoxy. Mix up the epoxy according to the directions and add some of this stuff until its like peanut butter and it makes a glue that, as far as I can tell, never comes apart. Add a little wood flour to the mix and you get a nice filler material too. This stuff is pretty particularized so its best if you use it outside or at least in a garage with the doors open. Not sure what happens if you breathe it in but I'm sure its not a good idea. If you are outside be careful, a good breeze will empty the bucket for you and it'll all be gone. Great product. ### ⭐⭐⭐⭐⭐ Works great *by S***0 on July 25, 2024* Building a mini tugboat. This filler thickens up epoxy resin very quickly. Seems to require a smaller amount than other fillers that I have used. When teh epocy cures, it makes for a very hard surface. ## Frequently Bought Together - System Three Silica Thickener, 1 Qt Tub, White - TotalBoat-14409 Marine Gelcoat for Boat Building, Repair and Composite Coatings (White, Quart with Wax) - TotalBoat-510822 High Performance Epoxy Kit, Crystal Clear Marine Grade Resin and Hardener for Woodworking, Fiberglass and Wood Boat Building and Repair (Quart, Medium) --- ## 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.co.uk/products/15278637-system-three-silica-thickener-1-qt-tub-white](https://www.desertcart.co.uk/products/15278637-system-three-silica-thickener-1-qt-tub-white) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-04*