Title
DISCUSSING THE DIFFERENCES
DISCUSSING THE DIFFERENCES
Date
10/2021
10/2021
Author(s)
Kurt Fester
Kurt Fester
Page(s)
35-37
35-37
Keyword(s)
metal; panels; roof; assemblies; water
metal; panels; roof; assemblies; water
Abstract
As metal panel roof systems continue to rise in popularity, you need to be aware of the requirements and recommendations related to their installation. But first, it is important to understand how these systems differ. NRCA distinguishes between two primary categories of metal panel roof systems: structural and architectural. Metal panels used in structural metal panel roof assemblies have the strength and capability of spanning structural members, such as joists or purlins, without being supported by a continuous or closely spaced roof deck. Structural metal panel roof assemblies typically are weatherproof. They are designed to resist the passage of water at joints, laps and junctures under minimal hydrostatic pressure. In most configurations, structural metal panel roof systems do not require underlayments.
As metal panel roof systems continue to rise in popularity, you need to be aware of the requirements and recommendations related to their installation. But first, it is important to understand how these systems differ. NRCA distinguishes between two primary categories of metal panel roof systems: structural and architectural. Metal panels used in structural metal panel roof assemblies have the strength and capability of spanning structural members, such as joists or purlins, without being supported by a continuous or closely spaced roof deck. Structural metal panel roof assemblies typically are weatherproof. They are designed to resist the passage of water at joints, laps and junctures under minimal hydrostatic pressure. In most configurations, structural metal panel roof systems do not require underlayments.