The unique Celotex online U-value calculator generates a U-value specific to the chosen construction and enables you to input a range of different construction parameters to evaluate their impact on thermal performance.

It achieves the required U-values with minimum thickness with ease. It also helps in meeting the current as well as future requirements of the Building Regulations. Certifications: Celotex has achieved A+ rating when it is compared to BRE Green Guide and has certification from BBA certificate number 95/3197 and 09/4667. The Celotex XR4000 Insulation Board enables lower U-Values with a single layer of insulation. The product comes in various thicknesses and is designed to help meet current and future build regulations and carbon reduction programmes. The Celotex U-value Calculator is one of the most comprehensive online calculators in the industry and is used by thousands of small to large architects and specifiers all over the country. So for this reason we have we have just made this bigger and better for our users to improve your experience. A U-value is a measure of thermal transmittance, or the amount of heat energy that moves through a floor, wall or roof, from the warm (heated) side to the cold side. It is the number of Watts per square metre of the construction, per degree of temperature difference between one side and the other ( W/m2K ) . Celotex Crown-Bond is a high performance flat roofing insulation board featuring innovative composite facers on both sides, a low lambda value of 0.022 W/mK and a compressive strength of up to 150 kPa, providing increased dimensional stability and added robustness. It achieves the required U-values with minimum thickness with ease. It also helps in meeting the current as well as future requirements of the Building Regulations. Certifications: Celotex has achieved A+ rating when it is compared to BRE Green Guide and has certification from BBA certificate number 95/3197 and 09/4667. Key Features:

Celotex offer PIR thermal insulation boards in various thicknesses for new build and refurbishment applications for both the commercial and domestic sectors. Important Information: For all updates and Celotex announcements since June 2017, please see the links below

Celotex has a policy of continuous product development and reserves the right to alter product designs or speciications without prior notice. *Calls to the Celotex Technical Centre are charged at 30p per minute from a BT landline and lines are open Monday - Friday from 8.00am - 5.15pm. Jul 17, 2012 · A Celotex corporate video showcasing the manufacturing and operational facilities as well as the added features and benefits of using Celotex insulation. Mar 21, 2017 · A low U-Value means better thermal performance and a high U-Value means worse resisting heat loss, whereas, single glazing has a high U-Value and loses heat rapidly. 3 A degree Kelvin is similar to a degree Centigrade but starting instead from -273.15C, the freezing point of IMPORTANT: On 1 September 2017, Celotex took the precautionary measure to temporarily suspend the supply of Celotex FR5000, Celotex CG5000, Celotex CF5000 and Celotex SL5000 while we investigate the results of recent tests (Parts 6 and 7 of British Standard 476). Materials relating to these products are for information only.

Celotex offer PIR thermal insulation boards in various thicknesses for new build and refurbishment applications for both the commercial and domestic sectors. Important Information: For all updates and Celotex announcements since June 2017, please see the links below

50mm Celotex GA4050 is a multi-purpose insulation board that provides solution to overcome from the localized thermal bridges problem. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) by using a perfect mix of certain blowing agents which acquires zero ozone depletion potential (zero ODP) and a low global warming impact (GWP). Celotex CF5000 features a super low lambda of 0.021 W/mK helping you achieve compliance to UK building regulations and a U-value within the wall of 0.18 W/m2K. CF5000 has been mechanically engineered with a rebated edge to eliminate the passage of moisture. Celotex with lambda values as low as 0.021W/mK achieve better U-values and thinner solutions preventing heat loss and maximising thermal performance. With a premium range including ‘best in class’ product solutions for pitched and fl at roofs, walls and fl oors Celotex will continue to help meet the requirements of Building Regulations. SuperQuilt is proven to save cost, space, wastage & installation time compared to Rigid PIR Insula tion (Kingspan / Celotex) Require a U-value document for building control? Visit our free & easy to use Online U-value Calculator. Receive instant solutions in less than 60 seconds! Click Here to Use! import_contacts See Full Guide U-Value. Now you have your Rt value, the calculation is simple, one divided by the Rt. There you have your U-Value. Other helpful bits: Architecture.com U-Value guide BRE Guide to U-Values. One of our readers, Brian, has very kindly provided access to the U-Value calculations of a live project so that you can get a feel for what is involved. Celotex offer PIR thermal insulation boards in various thicknesses for new build and refurbishment applications for both the commercial and domestic sectors. Important Information: For all updates and Celotex announcements since June 2017, please see the links below We provide U-value calculations to show compliance with current Building Regulations / Standards and best practice. These can be supported with a detailed report. The easiest way of getting a U-value calculation is by using our free online U-value Calculator. For more information, see our articles and how to videos below.