- Load Rated
- Screed Compatible
- UFH Suitable
Tree Sisters
Building A Band of Brothers
Product Description
Celotex TB4000 is a high-performance PIR (polyisocyanurate) thermal bridging board designed to reduce heat loss at structural junctions such as steel beams, lintels, balcony connections and parapets. Available in thicknesses from 20 mm to 165 mm, it offers superior thermal resistance in a slim profile, helping buildings meet Part L energy-efficiency requirements.
Key Benefits
Application
Cut boards to size using a fine-toothed saw or sharp knife. Fix mechanically or adhesively to the structural element to be insulated. Ensure tight butt joints between boards and seal with foil tape to maintain vapour resistance. Position to break the thermal bridge between the internal and external building envelope. Refer to accredited construction details for specific junction detailing.
Coverage
Standard board size is 1200 mm × 600 mm (0.72 m² per board). Thermal conductivity: 0.022 W/mK. R-values range from 0.90 m²K/W at 20 mm to 7.50 m²K/W at 165 mm.
Additional information
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Working with our supply chain
For each and every project we work on, we ensure that materials are sourced as close to the site address as possible and attempt to arrange deliveries during off-peak times to minimise congestion on our roads.
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Supporting A Band of Brothers UK
We are proud to support A Band of Brothers UK, a charity helping young men break cycles of violence and crime through mentoring. Every order you place with Screedworks contributes to this vital cause through our easyfundraising partnership.
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Restore & Protect
From January 2021 we are asking our clients to round up their final invoice to the nearest £5, £10 or £20. We will match the amount pledged and then donate the total to Tree Sisters.
