---
product_id: 60556217
title: "Xtratherm 50mm High Performance Polyisocyanurate Foam Insulating Sheet for Floor or Roof"
brand: "xtratherm or celotex"
price: "C$11115"
currency: NIO
in_stock: false
reviews_count: 6
url: https://www.desertcart.ni/products/60556217-xtratherm-50mm-high-performance-polyisocyanurate-foam-insulating-sheet-for-floor
store_origin: NI
region: Nicaragua
---

# Low GWP & zero ODP eco-friendly insulation 2400x1200x50mm panel size Lambda 0.022 W/mK ultra-low thermal conductivity Xtratherm 50mm High Performance Polyisocyanurate Foam Insulating Sheet for Floor or Roof

**Brand:** xtratherm or celotex
**Price:** C$11115
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Stay warm, save energy, and build smarter with Xtratherm!

## Quick Answers

- **What is this?** Xtratherm 50mm High Performance Polyisocyanurate Foam Insulating Sheet for Floor or Roof by xtratherm or celotex
- **How much does it cost?** C$11115 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/60556217-xtratherm-50mm-high-performance-polyisocyanurate-foam-insulating-sheet-for-floor)

## Best For

- xtratherm or celotex enthusiasts

## Why This Product

- Trusted xtratherm or celotex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Conscious Choice:** Low global warming potential and zero ozone depletion for future-proof builds
- • **Versatile Application:** Ideal for floors, roofs, and timber frame walls—adapt to any project
- • **Certified Quality Assurance:** Backed by BBA certification for trusted, high-performance insulation
- • **Next-Level Thermal Efficiency:** Achieve superior heat retention with a Lambda value of 0.022 W/mK
- • **Precision Engineered Dimensions:** Perfectly sized 2400x1200x50mm sheets for seamless installation

## Overview

Xtratherm 50mm Polyisocyanurate Foam Insulating Sheets deliver industry-leading thermal performance with a low Lambda value of 0.022 W/mK. Sized at 2400x1200mm, these lightweight 5kg panels are perfect for floor, roof, and timber frame wall insulation. Certified by BBA and designed with eco-friendly materials featuring low global warming potential and zero ozone depletion, Xtratherm ensures efficient, sustainable, and reliable insulation for modern construction projects across mainland UK.

## Description

Product Description               offering enhanced thermal performance in cavity air spaces Kids wall such as timber frame walls and roof pitched applications, Celotex GA4000 Is a high-performance: PIR insulation board that Offers high performance insulation with low emissivity foil facings offering enhanced thermal performance within cavity air spaces Kids wall Is certified under BBA certificate number 95/09/4667 3197 and Is suitable for a number of applications Including roof, wall and floor systems Is available as a BIM object Has low global warming potential (GWP) and zero ozone depletion potential (ODP) Future-proof alcoholic beverages the energy performance of new and existing buildings                  Legal Disclaimer               ***Delivery is for most of UK mainland.Highlands, Islands & Ireland etc may incur an extra charge.*** Delivery is to Uk Mainland only ( zone 2 & 3) The below list will incur a extra charge please email us for charges , If you purchase with out contacting us first we will not attempt to ship until YOU contact us !! All Postcodes , Scotland KW , IV , AB , DD , PH , PA , FK , KY, KA Devon TR , Part of PL, Part of EX, Part of TQ all of Northern Ireland and Ireland All Islands other zone may incur a surcharge, please email us for prices * Please ensure you leave a contact telephone number for the delivery driver* Part of the less2build Group

## Features

- Delivery to mainland UK only &South Wales Contact number required for driver delivery
- Suitable for a wide variety of applications including roof, wall and floor insulation.
- We will provide you with XthaTherm Celotex or depending on location
- Dimensions: 2400 x 1200 x 50 mm Lambda: 0.022 W/mK
- Provides better thermal performance in the confined air cavity, such as sharp wooden walls and frame ro

## Technical Specifications

| Specification | Value |
|---------------|-------|
| UPC | 799493546309 |
| Product Dimensions | 240 x 120 x 0.1 cm; 5 kg |
| Item Package Quantity | 1 |
| Coverage | 28,800 square centimeters |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 5 kg |

## Product Details

- **Material:** Polyisocyanurate
- **Item thickness:** 5E+1 Millimetres
- **Recommended uses for product:** roof insulation, wall insulation, floor insulation
- **Product dimensions:** 2.4L x 1.2W metres
- **Manufacturer:** Xtratherm or Celotex

## Images

![Xtratherm 50mm High Performance Polyisocyanurate Foam Insulating Sheet for Floor or Roof - Image 1](https://m.media-amazon.com/images/I/41wjEshweOL.jpg)

## Questions & Answers

**Q: Anyone know whether this insulation is good for soundproofing?**
A: This is heat insulation material. You need specific product such as :- http://www.wickes.co.uk/Knauf-Sound-Panel-Tapered-Edge-2400x1200x12-5mm/p/224657

**Q: Can this item be used on a garage ceiling?**
A: YES CUT JUST UNDERSIZE FILL GAPS WITH EXPANDING FOAM FILLER TO SECURE

**Q: if this is placed onto cement floor, how much self levelling compound should go on top before tiling?**
A: I myself would not use self leveling on top of Xtra  therm cement i  would rather use interlocking chipboard 3/4 inch thick, my floor with tiles has not moved at all in 10 years

**Q: can it be used for loft conversion, before the boards go on, instead of the foil to the timber ?**
A: Insulation between the rafters* For optimum thermal performance the unprinted foil surface should face the rafter air cavity.* Accurately measure the width to be filled between the inside face of the rafters, prior to cutting the board.* Use the Celotex Insulation Saw to cut the Celotex board at a slight angle, making the board width slightly oversized on onesurface to achieve a `friction it'.* Push the board into the void between the rafters until it is tight against the underside of the first layer of insulation.* To hold the boards in place, use battens along the side of the rafters.* Tightly fit the insulation to the ridge plate and carry over and tightly butt the wall plate at eaves.* A vapour control layer (VCL) should be installed to the underside of the rafters. A polythene sheet of higher vapour resistance isrecommended for high humidity areas such as kitchens or bathrooms.* Finish with plasterboard or other suitable sheet material, fixed to the rafters.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top insulation
*by A***E on 20 April 2019*

Really good price, I looked on loads of sites including the ones that delivered it and couldn't find it cheaper elsewhere

### ⭐⭐⭐⭐ Does what it claims
*by C***S on 5 December 2013*

The product is fine. It is a bit pricey hence not 5 stars. Would buy it again when insulation of this type is needed.

### ⭐⭐⭐⭐⭐ Five Stars
*by K***H on 7 February 2016*

Perfect good sold insulation used in my extension

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**Shop now:** [https://www.desertcart.ni/products/60556217-xtratherm-50mm-high-performance-polyisocyanurate-foam-insulating-sheet-for-floor](https://www.desertcart.ni/products/60556217-xtratherm-50mm-high-performance-polyisocyanurate-foam-insulating-sheet-for-floor)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-13*