Covers 5 Squares (500 Square ft.)
 
Ply IV is manufactured with a heavyweight fiberglass mat containing heat-cured resinous binders.
The high strength glass mat is saturated with asphalt, giving Ply IV excellent strength and weathering characteristics, as well as a uniform porosity for ease in application.
 
Ply IV is a ply sheet used in hot mopped roofing applications and may be the basic ply sheet used in all smooth and gravel surfaced roofing systems