--- product_id: 88684456 title: "XPS Boards Floor Underlay Thermal Insulation Underfloor Heating 600 x 600mm x 6mm Sheets - 1.86m2 to 18.60m2" brand: "cosyspace" price: "ΰΈΏ45584" currency: THB in_stock: true reviews_count: 2 category: "Cosyspace" url: https://www.desertcart.co.th/products/88684456-xps-boards-floor-underlay-thermal-insulation-underfloor-heating-600-x store_origin: TH region: Thailand --- # 6mm thick thermal barrier 100% recyclable polystyrene Lightweight & easy to cut XPS Boards Floor Underlay Thermal Insulation Underfloor Heating 600 x 600mm x 6mm Sheets - 1.86m2 to 18.60m2 **Brand:** cosyspace **Price:** ΰΈΏ45584 **Availability:** βœ… In Stock ## Summary > πŸ”₯ Stay warm, save green – the smart insulation upgrade you can’t afford to miss! ## Quick Answers - **What is this?** XPS Boards Floor Underlay Thermal Insulation Underfloor Heating 600 x 600mm x 6mm Sheets - 1.86m2 to 18.60m2 by cosyspace - **How much does it cost?** ΰΈΏ45584 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/88684456-xps-boards-floor-underlay-thermal-insulation-underfloor-heating-600-x) ## Best For - cosyspace enthusiasts ## Why This Product - Trusted cosyspace brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Application:** Ideal for concrete floors, wet rooms, lofts, and walls where moisture resistance is key. - β€’ **Durable & Water Resistant:** Resists compression, moisture, and ageing for long-lasting performance. - β€’ **Lightweight & Easy to Install:** Cut to size effortlessly, perfect for quick DIY or professional projects. - β€’ **Eco-Friendly Insulation Solution:** Made from fully recyclable extruded polystyrene, supporting sustainable building. - β€’ **Maximize Underfloor Heating Efficiency:** Reflects heat back to floor surface, reducing energy waste and lowering bills. ## Overview CosySpace XPS Boards are 6mm thick extruded polystyrene insulation sheets designed to enhance underfloor heating efficiency by reflecting heat back to the floor. Lightweight, water-resistant, and durable, these recyclable boards provide a cost-effective thermal barrier ideal for concrete floors and poorly insulated properties. Their closed-cell structure prevents heat loss and damp, making them a sustainable choice for modern energy-conscious homes. ## Description Note: Please note that the product colour for 6mm and 10mm boards can be blue or black depending on what stock is available. CosySpace XPS Insulation Boards are manufactured from fully recyclable materials. They are produced from foamed polystyrene, a material that does not deteriorate. The cell structure in the board is built up from very fine closed cells that give the product its excellent physical and mechanical characteristics.An excellent insulation that saves energyThis special cell structure means that the sheet does not conduct heat. When you lay CosySpace XPS boards as an underlay any heat from your room or floor will be reflected back towards the floor surface. This is because you will not be wasting heat through your floor and will utilise your energy in a very green efficient manner, thereby lowering your energy consumption and carbon footprint.Effective protection against cold and dampCosySpace XPS boards do not only take care of the heat, they are also an effective guard against the cold and damp. The cold will be held back by the non-conducting characteristics of the foam and as the CosySpace XPS board is also water repellent, it will not rot or go mouldy and will help hold back any damp from your floor. CosySpace XPS boards are also resistant to cement, plaster, and most alkalis (lime or soda), however, not against organic solvents (i.e. acids) Review: Perfect for under floor heating - - Specially built for under floor heating - easy to cut for different sizes - package arrived much sooner than expected so that we could start the work! only downside is that they were slighly different sizes. Overall quite pleased. Review: Did the job... - ....but the sizing wasn't exactly the same on all boards. We used them under 9mm ply so the gaps got covered up but would have been nice to have them all uniform. I would recommend though - it's not as if you see them after the work is done... ## Features - Best Used With An Underfloor Heating Kit On Concrete Flooring a Low Cost Proxy To Tile Backer Board - High Density, Light Weight And Low Cost Make This Foam Board Ideal In A Poorly Insulated Property - XPS Boards Are An Extruded Polystyrene Insulation Board Made Through A Plastic Extrusion Process - Widely Used In Walls And Loft Insulation, Underfloor Heating, Roof, Wet Room, And Non Moisture Areas - Stable Performance, Anti-ageing, Resistant To Compression, Water Resistant, Lightweight, Recyclable ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HPDBVYG | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 490,920 in DIY & Tools ( See Top 100 in DIY & Tools ) 364 in Panel Insulation | | Colour | Blue | | Coverage | 18.60 m2 | | Customer Reviews | 4.5 4.5 out of 5 stars (18) | | Date First Available | 26 Sept. 2018 | | Manufacturer | CosySpace | | Material | Polystyrene | | Size | 18.60 m2 | ## Product Details - **Brand:** Cosyspace - **Manufacturer:** CosySpace - **Material:** Polystyrene - **Product dimensions:** 60L x 60W centimetres ## Images ![XPS Boards Floor Underlay Thermal Insulation Underfloor Heating 600 x 600mm x 6mm Sheets - 1.86m2 to 18.60m2 - Image 1](https://m.media-amazon.com/images/I/31yqw-YD4pL.jpg) ![XPS Boards Floor Underlay Thermal Insulation Underfloor Heating 600 x 600mm x 6mm Sheets - 1.86m2 to 18.60m2 - Image 2](https://m.media-amazon.com/images/I/51ZRy9ZNEUL.jpg) ## Questions & Answers **Q: Can I use it as the underlayer itself for laminate flooring and in what maximum thickness before it is too bouncy and not solid enough for laminate?** A: Hi yes you can use these for underlay. Thanks **Q: Could I use these under a carpet?** A: Yes you can use under carpet. Thanks **Q: Are these suitable for use under foil underfloor heating?** A: Yes they are absolutely fine for that. Thanks **Q: When using it as a laminate underlayer, do I have to tape them together, as there are no interlocking side bits, to avoid any sliding apart movement?** A: Hi you have to use insulation tape these boards are not interlocking boards. Thanks ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for under floor heating *by M***D on 22 April 2021* - Specially built for under floor heating - easy to cut for different sizes - package arrived much sooner than expected so that we could start the work! only downside is that they were slighly different sizes. Overall quite pleased. ### ⭐⭐⭐⭐ Did the job... *by T***N on 2 May 2019* ....but the sizing wasn't exactly the same on all boards. We used them under 9mm ply so the gaps got covered up but would have been nice to have them all uniform. I would recommend though - it's not as if you see them after the work is done... --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/88684456-xps-boards-floor-underlay-thermal-insulation-underfloor-heating-600-x](https://www.desertcart.co.th/products/88684456-xps-boards-floor-underlay-thermal-insulation-underfloor-heating-600-x) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-10*