Contact

Found a quantity that looks wrong? Something hard to use on your phone or printer? Write to us.

Reporting a wrong quantity

Please tell us the page you were on, the measurements and product settings you entered, and the quantity you expected with where it came from. A wrong figure is the most important thing we can fix, and we will reply.

Reporting an accessibility problem

Tell us your device and browser (for example, iPhone Safari or Windows Edge) and what you use, such as a screen reader or the keyboard.

We cannot answer questions about your own project, your local code or which permits apply. Your building department can answer those.