Frequently asked questions about our calculator

Q: Which wood gives the lowest u-valueAndrew26382021-02-23T15:36:40+00:00

Q: Which wood gives the lowest u-value

A: The u-value of the wood comes from the r-value of the type of wood used and how thick that wood is.

Accoya has the lowest r-value, followed by softwood and then hardwood. So to get the lowest value u-value a thick

piece of wood made from accoya and the highest value would come from a thin piece of wood made from hardwood.

Q: Can you phone me ?Andrew26382021-02-23T13:17:06+00:00

Q: Can you phone me ?

A: No. We don’t offer a phone you service. If you have a question then feel free to contact us using the contact form on the website and we will reply.

Q: I have a upvc window / door can I get a u-value ?Andrew26382021-02-22T21:49:41+00:00

Q: I have a upvc window / door can I get a u-value ?

A: Aluminium / upvc windows are created with different profiles. If you can tell us the value for the profile that you are using then we will calculate a u-value based upon that figure.

In the case of Aluminium frames if a value is not available we will use the generic figure of 0.9 as being the u-value of the frame.

Q: The window / Door I have has more than 6 panels of glass. How do I submit it to you ?Andrew26382021-02-22T19:09:36+00:00

Q: The window / Door I have has more than 6 panels of glass. How do I submit it to you ?

A: The u-value we provide is based upon the area of glass within the frame. If you have more than 6 glass panels then we can work out the total area of glass and use that figure.

Q: Can I send plans of the window / door I want a u-value for ?Andrew26382021-02-23T13:27:38+00:00

Q: Can I send plans of the window / door I want a u-value for ?

A: Please do not send us plans. Use the submission form on the website. The form contains all the information that we require from you to carry out a calculation.

If you send us a plan. It takes us additional time to try and take the information from the plan that we require .. and we might actually get that information wrong.

Using the form is quicker and easier for us.