I am verifying the answers generated by an automatic system to the following question: how long is a flat membrane roof good for?
Suggested answer: The tar coating is applied in one or more coats as a hot liquid, heated in a tar kettle , or as sheets of tar impregnated 'paper' glued down and sealed together at joints by hot tar - once it has cooled, the gravel is spread evenly over it.
Should I validate this answer?
