MFM-Building-Products IB-4 StormStopper.png

IB-4™ StormStopper is a self-adhering, 60 mil, mineral surface roofing underlayment for use under shingles, tile, and other types of roofing. It is constructed from a strong layer of mesh bonded to rubberized asphalt and coated with black stone granules. Comes with a non-removeable selvedge edge for a secure seal on overlaps.

IB-4™ StormStopper installs under roofing at the edges and valleys to protect from leaks due to ice dams, meltingsnow and blowing rain. IB-4™ StormStopper is suitable for use in new construction and reroofing.

IB-4™ StormStopper Features

  • 60 mil nominal thickness

  • Non-removeable selvedge edge for secure seal on overlaps

  • Installs in temperatures above 40°F

  • Minimum slope for installation is 2" per foot

  • Applies easily at eaves, valleys, vents, skylights and chimneys

  • Easy to remove split release liner for fast installation and ideal for valley applications

  • Self-seals around common fasteners

  • May be left exposed for up to 365 days

  • 10-Year limited warranty

IB-4™ stormstopper Approvals

  • ASTM D 1970

  • ICC-ES ESR 1737

  • Florida Building Code FL 11842.1

  • Texas Department of Insurance Listed

IB-4™ StormStopper

ProductProduct IDSizeUnits/CartonCarton Wt.
IB-4 StormStopper4746736” x 67’178 lbs

IB-4™ is a 3-pallet minimum order product.