All dimensions must be based on external measurements of the building or structure involved and not internal measurements.
These calculators are based on standard building shapes.
They should be used with care if the building you are measuring involves a combination of these forms or differs in a significant way from those in the calculator.
If in doubt seek advice from a qualified person or your local planning authority.
Following revised guidance from the government we have now re-opened and, where social distancing allows, are carrying out work and providing quotation visits
Our office also remains open and you can contact the team on:
01922 402720 or enquiries@alvastonloftconversions.co.uk