--- product_id: 70667234 title: "Instant Foundation Block for Decks (24-Pack)" brand: "tuffblock" price: "£310.26" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/70667234-instant-foundation-block-for-decks-24-pack store_origin: GB region: Great Britain --- # Supports 1.5 & 2 inch joists, 3.5 & 4 inch posts Ultra-lightweight: 1.5 lbs, 28x lighter than concrete Load rated 1,700 lbs, break tested 11,000+ lbs Instant Foundation Block for Decks (24-Pack) **Brand:** tuffblock **Price:** £310.26 **Availability:** ✅ In Stock ## Summary > 🛠️ Build smarter, not harder — the future of foundations is here! ## Quick Answers - **What is this?** Instant Foundation Block for Decks (24-Pack) by tuffblock - **How much does it cost?** £310.26 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/70667234-instant-foundation-block-for-decks-24-pack) ## Best For - tuffblock enthusiasts ## Why This Product - Trusted tuffblock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Strength:** Supports heavy loads with break testing far beyond industry standards - • **Effortless Handling:** Ultra-lightweight design means easy transport and installation without heavy lifting - • **Built to Last Outdoors:** UV stabilized and moisture-resistant to protect your investment for decades - • **Eco-Friendly & Certified:** Made from 100% recycled materials with ICC-ES certification and a 25-year warranty - • **Versatile Fit for Every Project:** Accepts multiple joist and post sizes for decks, sheds, and more ## Overview The Instant Foundation Block 24-Pack by Evolve Group revolutionizes deck and raised platform construction with ultra-lightweight, versatile blocks that support up to 1,700 lbs each. Made from 100% recycled materials, UV stabilized, and designed with moisture control features, these blocks offer professional-grade strength and durability backed by a 25-year warranty and ICC-ES certification. Perfect for millennial pros seeking eco-conscious, hassle-free foundation solutions. ## Description Since the inception of Deck Blocks in 1988 in the USA, instant foundation blocks have been the preferred method for creating a strong and stable foundation for many professional & DIY projects worldwide. The concept has literally revolutionised the way we look at deck & raised platform construction, with millions of projects completed each year using the system. An individual TuffBlock can support up to 1,700 pounds. Designed to accept 2” x 4”, 2” x 6”, 2” x 8” Joists and 90 x 90mm - 100 x 100mm (4” x 4”) Posts, TuffBlocks truely are the most versatile and easy to use deck foundation system on the market. TuffBlocks are more than just a deck foundation, they are a versatile utility block that can be used for an endless number of applications. ## Features - Multi-purpose foundation block for a range of home improvement projects including decks, sheds, pathways, raised walkways and more - TuffBlocks accept 1.5 & 2 inch joists, as well as 3.5 & 4 inch posts - Ultra-lightweight concrete alternative, with each block weighing 1.5 pounds - 28 times lighter than standard concrete - Load rated to 1,700 pounds and break tested to over 11,000 pounds per block - Made from 100% recycled materials - UV stabilized to withstand direct sunlight - Ventilation slits and water runoff to reduce moisture buildup. Prevents water wicking into lumber from ground. - 25 year warranty & ICC-ES Certified - Made in USA ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Evolve Group | | Part Number | 14010011 | | Item Weight | 1.5 pounds | | Product Dimensions | 11.81 x 11.81 x 3.54 inches | | Is Discontinued By Manufacturer | No | | Color | Black | | Material | High strength closed loop recycled polyolefin material with an ultra-high UV rating | | Item Package Quantity | 24 | | Number Of Pieces | 24 | | Maximum Weight Capacity | 1700 Pounds | | Capacity Description | Each | | Number Of Holes | 2 | | Special Features | 28 times lighter than standard concrete and 11 times lighter than the Handi Block | | Usage | Commercial/Residential | | Batteries Included? | No | | Batteries Required? | No | | Warranty Description | 25 year warranty | ## Product Details - **Color:** Black - **Material:** High strength closed loop recycled polyolefin material with an ultra-high UV rating - **Capacity:** 1700 Pounds - **Brand:** TuffBlock - **Product Dimensions:** 11.81"L x 11.81"W ## Images ![Instant Foundation Block for Decks (24-Pack) - Image 1](https://m.media-amazon.com/images/I/51hoSiEGolL.jpg) ![Instant Foundation Block for Decks (24-Pack) - Image 2](https://m.media-amazon.com/images/I/71dtRt+nFqL.jpg) ![Instant Foundation Block for Decks (24-Pack) - Image 3](https://m.media-amazon.com/images/I/718Wu7ItKWL.jpg) ![Instant Foundation Block for Decks (24-Pack) - Image 4](https://m.media-amazon.com/images/I/51KpJttF9BL.jpg) ![Instant Foundation Block for Decks (24-Pack) - Image 5](https://m.media-amazon.com/images/I/A1okD6z8pJL.jpg) ## Questions & Answers **Q: What is the measurement from the base of the block (ground level) to the base where the bottom of the joist sits?** A: 2” **Q: Can they be used for fence post?** A: No, they are really not appropriate as a fence post base. They aren't designed to supply much lateral support. They're meant to support a deck post. **Q: My local building inspection office requires an icc, intertech, or similar evaluation product evaluation for new products does this have one?** A: Yes, their website shows the product has been evaluated and been certified. Search Tuff Block certification and the search should take you to the web page with the information! Good Luck! **Q: How many would i need for a 20'x20' woodworking shop/ shed with a loft?** A: One big package does 10x10 so I would get 2. I had maybe 5 blocks left over. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy, fast and sturdy! *by J***B on October 18, 2020* Lifesaver! This product saved me thousands of dollars! The floor of my 1800’s barn kept washing out. We removed all the old wood and damaged beams. My carpenter was going to put new support beams in and replace the floor running 10-20k! I was convinced I could put a deck floor in there using cinder blocks. After researching this, I found Tuff Blocks. I ordered them and they were delivered quickly. I put some gravel from the driveway into the barn, tampered it down and laid the Tuff Blocks out. With some leveling we got the joists placed and screwed in the floor boards. It was a couple day job. Very easy and cost me about $900 in materials. The beauty is I can easily unscrew it and pull it up if we have another flooding issue. I couldn’t be happier with it and I owe it to these fabulous Tuff Blocks! ### ⭐⭐⭐⭐⭐ Freaking Awesome *by A***R on April 21, 2022* Built a 12x10 studio shed using these things and it is rock SOLID.Did not have to break the ground or cut into my turf to do it. Would absolutely recommend for a shed, deck or anything needing a floating foundation. Not real popular out here on the West coast yet, it seems as no one had these in-store, but as a 'bored during COVID' project, these things took a lot of work out of what could have been a nightmare. 5 stars all the way. ### ⭐⭐⭐⭐⭐ Great Blocks *by A***A on May 18, 2022* Easy to use. Sturdy. For a solid shed deck. Lightweight. Will use these blocks if I need to build anything again. ## Frequently Bought Together - TuffBlock - Instant Foundation Block for Decks (24-Pack) - Pro-Grade Composite Shims for Heavy Duty Leveling. 24 pk 7.75 Inch, Never Rot, Easy Snap, Level Wedges. Water, Weather Resistant for Toilets, Doors, Windows, Sheds. Support Appliances and Furniture - BuildTuff TuffBlock Deck Support - 8 Count --- ## 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/70667234-instant-foundation-block-for-decks-24-pack](https://www.desertcart.co.uk/products/70667234-instant-foundation-block-for-decks-24-pack) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-22*