To obtain a copy of a specific publication, users should contact the publication's publisher directly.
Abstract
Since self-adhering roofing underlayments were introduced more than 30 years ago, there have been many changes to the composition of these waterproofing membranes. Today, there are any number of choices when considering a self-adhered product, including various mastic formulations, wet or dry edge, and extended UV ratings. For metal roofing systems specifically, a high temperature rated underlayment is preferable due to the extreme heat generated beneath the panels. Most roofing contractors will opt for a .product that is rated at a minimum of 107 C (225 F) for metal, steel, and aluminum systems. It is always best to contact the manufacturer for installations under copper or zinc roofing due to a higher heat level generated from these materials.
Since self-adhering roofing underlayments were introduced more than 30 years ago, there have been many changes to the composition of these waterproofing membranes. Today, there are any number of choices when considering a self-adhered product, including various mastic formulations, wet or dry edge, and extended UV ratings. For metal roofing systems specifically, a high temperature rated underlayment is preferable due to the extreme heat generated beneath the panels. Most roofing contractors will opt for a .product that is rated at a minimum of 107 C (225 F) for metal, steel, and aluminum systems. It is always best to contact the manufacturer for installations under copper or zinc roofing due to a higher heat level generated from these materials.
Date
1/2024
1/2024
Author(s)
David Delcoma
David Delcoma
Page(s)
18-18
18-18
Keyword(s)
underlayment; UV; rating; formulations; installations
underlayment; UV; rating; formulations; installations