--- product_id: 194923902 title: "Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding" brand: "phyxology supply" price: "£40.19" currency: GBP in_stock: true reviews_count: 5 category: "Phyxology Supply" url: https://www.desertcart.co.uk/products/194923902-pro-project-supplys-never-rot-8-inch-composite-shims-24 store_origin: GB region: United Kingdom --- # 16000 lbs max load pre-scored easy snap weatherproof & rot-resistant Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding **Brand:** phyxology supply **Price:** £40.19 **Availability:** ✅ In Stock ## Summary > 🔧 Level Up Your Projects with Never-Rot Power! ## Quick Answers - **What is this?** Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding by phyxology supply - **How much does it cost?** £40.19 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/194923902-pro-project-supplys-never-rot-8-inch-composite-shims-24) ## Best For - phyxology supply enthusiasts ## Why This Product - Trusted phyxology supply brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Weather Reliability:** Waterproof and never rot, perfect for indoor and outdoor use in any climate. - • **Unmatched Strength & Durability:** Supports up to 16,000 lbs—30% stronger than wood shims for heavy-duty projects. - • **Effortless Precision Adjustments:** Pre-scored lines let you snap to size cleanly—no tools, no mess, no hassle. - • **Satisfaction Guaranteed for Life:** Backed by a lifetime money-back promise—invest in quality that lasts. - • **Versatile Multi-Project Essential:** Ideal for leveling doors, windows, stairs, furniture, and more—your go-to for flawless alignment. ## Overview Pro Project Supply's Never Rot 8 Inch Composite Shims deliver industry-leading strength with a 16,000 lbs load capacity, crafted from 100% recycled composite material that resists rot, warping, and weather damage. Designed for effortless use, these 24-pack shims feature pre-scored lines for quick, clean snapping without tools, making them perfect for precise leveling of doors, windows, stairs, and more—indoors or out. Backed by a lifetime satisfaction guarantee, these shims are the durable, eco-friendly upgrade every professional and DIYer needs. ## Description Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding : desertcart.co.uk: DIY & Tools Review: I have installed some aluminum stairs at my house which have sagged a bit - GRRRR! They were off between 3 and 4 degrees which makes them feel like I could slide. By using these shims under the stairs I was able to level them right up and they feel perfect. Good product - I think the quality is excellent, they drilled easily and I’m glad I ordered a bunch of them as I have a few other home projects where I think I can use them. Review: The 7.75-inch length of these shims makes them incredibly versatile and suitable for a wide range of applications. Whether I needed to level a toilet, door, or window frame, these shims handled the task with ease. Their design allows for easy snapping and adjusting, providing precise and stable leveling for my projects. One of the standout features of these composite shims is their durability. Unlike traditional wood shims that can rot and warp over time, these shims are made of a composite material that is resistant to water and weather. I have used them both indoors and outdoors, and they have held up exceptionally well, even in challenging environmental conditions. The shims' construction ensures they won't compress under heavy loads, providing reliable support for various installations. I appreciated their consistent thickness and strength, which made them a reliable choice for heavy-duty leveling tasks. Additionally, these shims are incredibly user-friendly. The easy snap feature allows me to quickly adjust the shim size to fit my specific needs, saving time and effort during installation. The shims are also easy to trim, making them customizable for unique projects. I was also pleased to find that these shims don't splinter or leave residue, making them cleaner and safer to work with compared to traditional wood shims. Overall, I highly recommend the Pro-Grade Composite Shims for anyone in need of reliable, durable, and easy-to-use leveling tools. Their versatility, water and weather resistance, and precise leveling capabilities make them an indispensable addition to any DIY toolkit. Whether you're a professional contractor or a DIY enthusiast, these shims will undoubtedly make your leveling projects a breeze. ## Features - SUPER STRONG & DURABLE COMPOSITE SHIMS: Our plastic wedge shims, made from 100% high-quality recycled materials, boast 30% more load support and pressure capacity than wooden shims. These stackable shims are perfect for all your leveling, repairs, and home improvement projects, ensuring superior durability and strength. - INDOOR/OUTDOOR MULTI-USE WEDGES: Our 7.75-inch composite shims cater to a variety of indoor and outdoor projects. Use these Heavy Duty Shims for leveling, plumbing, appliances, cabinets, countertops, doors, windows, furniture, decks, spas, fountains, gazebos, and mailboxes, providing unmatched versatility. - LIFETIME MONEY-BACK, NO NONSENSE GUARANTEE: ensuring 100% satisfaction for all your leveling needs. We stand behind our durable, high-quality shims, and if you're not completely satisfied, we promise to make it right. Trust our weather-proof, never-rot shims for a lifetime of reliable use, backed by our unwavering commitment to your satisfaction. - NEVER-ROT & WEATHER PROOF SHIMS: Our Never Rot shim levelers are waterproof and decay-resistant. Unlike wooden shims, these plastic shims won't rot, warp, swell, crack, or split, enduring rain, snow, and other harsh outdoor conditions. Trust our composite shims for a lifetime of reliability. - EASY & CLEAN BREAKS: Our 7.75" plastic wedges are 4 times easier to snap than wood, with pre-scored lines ensuring clean breaks. No need for additional cutting or trimming—simply measure and snap. Save time and energy with our user-friendly design, requiring no additional tools. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071FRHGXX | | Best Sellers Rank | 150,042 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 59 in Shim Stock | | Brand Name | PHYXOLOGY SUPPLY | | Colour | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (2,055) | | Grade Rating | Commercial | | Item Diameter | 8 Inches | | Item Form | Sheet | | Item Shape | Flat | | Item Thickness | 0.26 Inches | | Manufacturer | Pro Project Supply | | Material | Wood | | Number of Items | 24 | | Part Number | Never Rot Composite Shim | | Specification Met | True | | UPC | 817244023647 | | Unit Count | 24.0 count | ## Product Details - **Brand:** PHYXOLOGY SUPPLY - **Colour:** Black - **Item diameter:** 8 Inches - **Material:** Wood - **Shape:** Flat ## Images ![Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding - Image 1](https://m.media-amazon.com/images/I/81BzIz1DmjL.jpg) ![Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding - Image 2](https://m.media-amazon.com/images/I/813PpqhlQkL.jpg) ![Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding - Image 3](https://m.media-amazon.com/images/I/81hediEes+L.jpg) ![Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding - Image 4](https://m.media-amazon.com/images/I/81pQRLEddVL.jpg) ![Pro Project Supply's Never Rot 8 Inch Composite Shims, 24 Pack, Extreme Weight Capacity, Weatherproof, Easy To Break, Perfect For Doors, Windows And Sanding - Image 5](https://m.media-amazon.com/images/I/916wxFhh7tL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How thick is the fat end?** A: It is approximately 0.29 inches thick at its thickest point. **Q: will these crack if nailed down?** A: I haven't tried to nail them, but I would expect them to break if you did. They are a light composite material that feels quite brittle. If you really need to fix them in place I would suggest drilling a hole in them and then nailing or screwing them down through the hole. **Q: how wide are they?** A: They are 1.5" wide Thanks for reaching out! Thank you. John Customer Concierge **Q: Could these level a 20 gallon aquarium ?** A: If you are asking whether it will handle the weight of 20 gallons of water in addition to the weight of the tank and its stand, I don't see why not. I am using these to lean back to the wall two 4' solid wood bookcases placed on top of each other with mending plates (so 8' tall bookcase) filled with approximately 3000 dvds. However, I would probably at least lower the water level in your aquarium since if you can't empty it first since the water is likely to slosh around a bit. I would more be worried about whether the stand your aquarium sits on has the right leg design to withstand the shock of using these shims to level a 20 gallon aquarium if you plan on doing it while there is water in the aquarium. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***B on 13 October 2025* I have installed some aluminum stairs at my house which have sagged a bit - GRRRR! They were off between 3 and 4 degrees which makes them feel like I could slide. By using these shims under the stairs I was able to level them right up and they feel perfect. Good product - I think the quality is excellent, they drilled easily and I’m glad I ordered a bunch of them as I have a few other home projects where I think I can use them. ### ⭐⭐⭐⭐⭐ Review *by R***L on 30 July 2023* The 7.75-inch length of these shims makes them incredibly versatile and suitable for a wide range of applications. Whether I needed to level a toilet, door, or window frame, these shims handled the task with ease. Their design allows for easy snapping and adjusting, providing precise and stable leveling for my projects. One of the standout features of these composite shims is their durability. Unlike traditional wood shims that can rot and warp over time, these shims are made of a composite material that is resistant to water and weather. I have used them both indoors and outdoors, and they have held up exceptionally well, even in challenging environmental conditions. The shims' construction ensures they won't compress under heavy loads, providing reliable support for various installations. I appreciated their consistent thickness and strength, which made them a reliable choice for heavy-duty leveling tasks. Additionally, these shims are incredibly user-friendly. The easy snap feature allows me to quickly adjust the shim size to fit my specific needs, saving time and effort during installation. The shims are also easy to trim, making them customizable for unique projects. I was also pleased to find that these shims don't splinter or leave residue, making them cleaner and safer to work with compared to traditional wood shims. Overall, I highly recommend the Pro-Grade Composite Shims for anyone in need of reliable, durable, and easy-to-use leveling tools. Their versatility, water and weather resistance, and precise leveling capabilities make them an indispensable addition to any DIY toolkit. Whether you're a professional contractor or a DIY enthusiast, these shims will undoubtedly make your leveling projects a breeze. ### ⭐⭐⭐⭐⭐ Review *by S***. on 17 November 2025* These are just like cedar shims only they won’t break down. Easy to cut to length and quite durable. ## Frequently Bought Together - 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 - Composite Shims (24 Pack) - Hard Composite Shims for Home Improvement - Never Rot Shims for Leveling - Restaurant Table Shims - Table Wedges - Toilet Shims - DIY Furniture Levelers - Stock Your Home - Nelson Wood Shims 8" 12 Pack - Kiln Dried Wood - Set of 2 (Total 24 Shims) --- ## 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/194923902-pro-project-supplys-never-rot-8-inch-composite-shims-24](https://www.desertcart.co.uk/products/194923902-pro-project-supplys-never-rot-8-inch-composite-shims-24) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-24*