3 ft. 3 in. x 98 ft. Roll DELTA®-TRELA Vapor Permeable Underlayment | 5TBXCDDELTATRELA3.3X98

DELTA's DELTA-TRELA is a vapor permeable underlayment with structured separation and drainage, specifically designed for metal roofs and faades with metal cladding. The underlayment prevents corrosion and moisture accumulation underneath panels, ensuring the longevity of your metal roof.

• 8 mm studded fiber mat ventilates the underside of the metal panels
• Impact noise of rain or hail is reduced by up to 15 dB
• Thermally bonded to a randomly-oriented polypropylene fiber mesh
• Coverage: 318.5 sq. ft.