Does It Have To Be Dry For EPDM Roofing To Be Laid?

EPDM membranes require the substrate to be dry prior to installation so that the adhesive & primers can effectively bond the rubber to the roof deck. EPDM products will not adhere to wet or damp surfaces. It is important to bear in mind that trapped moisture within the deck may vaporize and negatively affect the performance of the membrane. 

If you would like more tips on when to install your EPDM roofing check out the video below.