Underlayments

Specifying Underlayments for Metal Roofs

January 22, 2021 at 3:49 p.m.

By GCP Applied Technologies. Roof assembly considerations for high performance product selection. Metal roofs are becoming increasingly popular due to their longer lifecycles, superior protection and lower maintenance costs than traditional shingle roofs. In addition, unvented assemblies and insulated roof decks are becoming more common, as builders seek to improve energy efficiency. ...