Underlayment

TOPIcs: Installation

Underlayment

RETURN TO Installation
RETURN TO FORUM

I interpret code as requiring it but again I refer you back to your local building officials. I do caution strongly against residential applications without solid decking. Unless you have extremely good attic ventilation as well as insulation and a vapor barrier on top of the ceilings, this creates a situation with a high risk for condensation on the underside of the metal roofing.

Todd Miller
2021-04-30 08:45:54.520368

When taking an existing metal roof off and it's over spaced sheeting is it code in Virginia that an underlayment must be installed

John Scarbro
2021-04-30 03:37:08.750313