50mm Celotex CW4050 Cavity Wall Insulation Board 1200mm x 450mm (5.94m2/Pack)

Warmth is imperative to comfort. With Celotex CW4050 Cavity Wall Insulation Board you can reduce undesirable heat loss, thus bringing energy bills down. Comprised of a PIR core sandwiched between low emissivity foil facings on both sides, these boards have an impressive thermal conductivity of just 0.022 W/mK.

CW4050 is an insulation board aimed specifically at partial fill cavity wall applications. These cavity insulation batts fit snugly in between cavity wall ties, and are perfect for use in new builds and extensions with a masonry cavity wall construction.

Celotex CW4000 is a high-performance BBA certified solution and is the leading brand in the market for PIR cavity wall insulation. Sized at 1200mm x 450mm, these conveniently sized boards are rigid, lightweight and easy to handle and install. They are also manufactured using blowing agents with low global warming potential (GWP) and zero ozone depletion potential (zero ODP). 

50mm Celotex Cavity Wall Insulation Applications

Celotex CW4050 is specifically designed for use in partial-fill cavity wall applications. As a high-performance insulation board featuring low emissivity foil facings, Celotex CW4050 offers enhanced thermal performance when compared to typical PIR products.

These partial fill cavity batts are sized at 1200mm x 450mm to suit standard wall tie spacings (when using cavity tie clips for retention) and provide a closed joint with adjacent boards.

50mm Celotex Cavity Wall Insulation Board Product Specifications

With gas and electric bills constantly on the rise, it has become more important than ever to improve the energy efficiency of our homes. By investing in partial-fill 50mm Celotex cavity wall insulation, you can reduce your energy bills and keep your home warmer for longer. It is a closed-cell, water repellent insulation board meaning not only will the boards provide weather-tight protection but moisture won't compromise insulation performance.

It is made from PIR (rigid polyisocyanurate), which has a thermal conductivity value of 0.022 W/mK. PIR is a good choice for homeowners who want to protect their homes from the elements and prevent air movement and heat loss in vulnerable exposure zones. PIR insulation promises durability and excellent thermal protection, better than that of most other building materials.

Let's check the specs:

• Flanked by low emissivity aluminium foil facings on either side for improved thermal insulation performance in cavity air spaces
• Can be fitted in new build or refurbishment insulation projects
• Celotex CW4050 is British Board Approved (BBA) for use as partial fill insulation in cavity walls
• Complies with building regulations for improving the thermal envelope of your home
• Zero Ozone Depletion Potential (ODP) and Low Global Warming Potential (GWP)
• Suitable for use in masonry cavity walls
• BBA certified
• BRE Green Guide Rating of A for sustainability
• Board: 1200 x 450

50mm Cavity Insulation 75mm Certifications

Celotex CW4050 is comprised of a PIR core and foil facings on either side. PIR is one of the most popular insulation materials on the market because it delivers excellent thermal protection at an affordable price. The insulation component of this Celotex board is given an A+ rating in comparison to the BRE Green Guide 2008.

Let's check the certifications:

• Spread of flame: fire classification of Class E
• Thermal conductivity of 0.022 W/m.K, reducing the thickness of insulation required to hit the target U-value - BS EN 12667
• BRE Green Guide Rating of A for sustainability - which can assist in demonstrating environmental performance in your BREEAM assessments
• BBA certified

Celotex CW4000 insulation boards deliver thinner solutions that meet target U-values as required by Building Regulations.