Disclaimer

DIYSums results are estimates for general information only. They are not a measurement of your site and are not financial, tax, legal, medical, structural or safety advice.

A result can be affected by measurement error, hidden site conditions, cutting patterns, product tolerances, pack sizes, local rules and changes to the cited information. Check the tool’s assumptions and sources, read the instructions for the actual product you plan to use, and confirm quantities and suitability with the supplier.

Use your own judgement and consult a qualified professional or local authority before acting where the work affects structure, drainage, fire safety, electrical systems, planning or other regulated matters. You are responsible for how you use the estimate and for decisions made from it.