Roof Component: Underlayment

The underlayment of a roof is the black paper that’s laid over the plywood sheeting in order to seal the roof from damaging elements (snow, rain, ice, etc.). The use of a membrane is typically required, a waterproof membrane, a sweat sheet or vapor barrier — with the underlayment paper serving the triple function.

By |2017-07-24T23:38:56+00:00July 24th, 2017|D1|