Would this be suitable to fibre glass onto for a water feature/pond?

No the panels do not bend. They will snap.

Could you wallpaper directly on to these

Shirt answer no. You need to put drywall over it. Any time you put a decent amount of pressure on Xps foam it marks or crushes.

How to i attach these to a concrete floor , i.e tile adhesive and can i self level over the top of them

I just sat the boards on top of the concrete. Didn't use self levelling concrete after. The boards done the job

Would this be good as a base to insulate under an above ground pool? Im looking to reduce heat loss

Quite possibly, provided weight is evenly distributed over them.

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🔥 Stay warm, save energy, and upgrade your space with XPS Foam Insulation! 🏡

ECO CONSCIOUS CHOICE - Recyclable materials that combine sustainability with superior thermal protection.
VERSATILE APPLICATION - Perfect for walls, lofts, wet rooms, and underfloor heating setups—adaptable to your project needs.
LIGHTWEIGHT YET DURABLE - High-density extruded polystyrene offers robust compression resistance without the bulk.
MOISTURE RESISTANT LONGEVITY - Engineered to resist water and ageing, ensuring lasting insulation performance.
EFFORTLESS THERMAL EFFICIENCY - Optimized for underfloor heating to keep your space cozy and energy-smart.

CosySpace XPS Foam Insulation Boards (1200x600x20mm) deliver high-density, water-resistant thermal insulation ideal for underfloor heating and various building applications. Lightweight yet durable, these recyclable extruded polystyrene sheets provide stable, long-lasting performance across 3.6m² coverage per 5-pack.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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