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Our family of SBS-modified base sheets.

LayflatSBS® Roofing Underlayment

Our family of SBS-modified base sheets. LayflatSBS® minimizes buckling, wrinkling, and fish mouths associated with unmodified base / plies. LayflatSBS® is used as a base/ply, and is covered with one of our cap sheets.
LayflatSBS® is available in four weights, 25-40-50 and 60 lbs/square, to meet most job conditions.

Various reinforcement options are available: This includes polyester, glass, and fiberglass scrim.

LayflatSBS® offers versatility of application with hot asphalt, cold adhesive, or mechanical fasteners.

Download the LayflatSBS® Product Data Sheet

A Full Line of Quality Roofing Products and Systems

How can we help you today?

  • Schedule a FREE roof assessment*

  • Connect with a sales representative

  • Order samples of MetalflexSBS®

*MBCare inspection is currently available for commercial buildings only.

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