






🔥 Stay warm, save green, and upgrade your space effortlessly! 🏡
CosySpace XPS Foam Insulation Boards (1200 x 600 x 10mm) deliver high-density, water-resistant thermal insulation designed specifically for underfloor heating applications. Lightweight yet durable, these extruded polystyrene sheets resist compression and ageing, making them ideal for improving energy efficiency in poorly insulated properties. Perfect for concrete floors, they offer a cost-effective alternative to tile backer boards while supporting sustainable building practices.





| ASIN | B07WPW8CC4 |
| Best Sellers Rank | 316,858 in DIY & Tools ( See Top 100 in DIY & Tools ) 270 in Panel Insulation |
| Brand | Cosyspace |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.5 out of 5 stars 70 Reviews |
| Included Components | No |
| Item Dimensions L x W | 12L x 6W metres |
| Item height | 0.1 centimetres |
| Manufacturer | CosySpace |
| Material | XPS |
| Product dimensions | 12L x 6W metres |
| Recommended Uses For Product | Insulation, underfloor heating |
| Recommended uses for product | Insulation, underfloor heating |
M**E
Good product
Easy to use Reasonable price
G**S
Fantastic Service
I use these foam boards to make tables for table-top gaming, they are light but robust, in various combinations they make 4x 4, 6 x 4 and 6 x 6 tables, my customers love them. And this time they sent me black ones, so no painting required ! Ordered on Sunday, delivered on Tuesday, fantastic service
P**L
Easy to use
Easy to use. Dense boards. Easy cut/score and snap. Fix with grab adhesive. Best of its type that I've found. 10/10 Better to buy in bulk 5+ as more cost effective
P**N
Fantastic!
Absolutely fantastic product, best quality insulating boards I’ve come across. Speed of despatch exceptional. All in all I’m very impressed.
L**S
They are really light and easy to handle
I bought these to insulate the roof of my conservatory which is very cold in winter and very hot in summer. The polycarbonate roofing material doesn't give much protection so I'm lining it on the inside with these XPS sheets. They are easy to cut with a knife (I'm using a sharpened Kitchen knife as a Stanley knife tends to wander a bit too easily). Haven't finished yet but it's looking promising.
T**S
Wanted to make some D&D terrain for my game
I know my reason for buying this is not the true reason for using this foam. But I'll give a review anyway, when i used hot glue on it, it melted, when I tried to cut it with a knife it actually crumpled the edge instead of cut (yes used a sharp blade). Good foam for insulation not good for model terrain making.
Z**I
Good as floating rafts
Bought these to use as floating rafts after couldn't easily find 4-5cm thick boards, and used 2 for each raft. They did the job as expected. The size is not 100% precise and can have few millimeters difference but it's negligible for what want them for.
S**N
Very good quality.
Used for base of hot tub for insulation. Very good
Trustpilot
1 month ago
1 day ago