Vapor Permeable Protection For Metal Roofs And Cladding.

Metal roofs and cladding are not sealed to the roof deck or sheathing, allowing moisture to get in easily. If moisture accumulates, there can be premature damage to the roof substructure, and condensation on the underside of the metal can lead to corrosion – requiring the metal to be replaced sooner than expected.

DELTA-TRELA is a vapor permeable underlayment with structured separation and drainage – specifically designed for metal roofs and façades with metal cladding. It helps prevent corrosion and moisture accumulation underneath panels and ensures the longevity of your metal roof.