About our u value Certificates
On submission of your window and door information, we will calculate the accurate U Value using the details you supplied.
The calculation conforms to part 1 of BS EN 10077.
We will issue you (By E Mail) a PDF format certificate, bearing a unique serial number, which should be sufficient proof as to the U Value qualities of your items.
Our certificates have already been accepted by council planning departments. However we cannot guarantee that it will be accepted by every such department in the United Kingdom.
Shown opposite is the front page from a certificate. This shows the Location where the Window or Door is fitted. What is actually being installed.
The type of glazing, type of Frame and any warm edge insulation.. The actual result of the calculation is displayed on subsequent pages of the Certificate.
No Membership Required. Suitable for all makes of product
Each u-value certificate costs £35. This is a lot cheaper than other sites. Remember you do not need to be a member of our site or use only our products, and we offer discounts where several calculations are required.
This service is available to anyone, using any type of frame or make of glass for their windows or doors.