IB-3 StormStopper Plus installs under roofing at edges, valleys and whole roof applications to protect from leaks due to ice dams, melting snow and blowing rain. The underlayment is suitable for use in new construction and re-roofing. Apply directly to the roof deck at eaves, valleys, vents, skylights and chimneys. IB-3 StormStopper Plus may be installed across the entire roof as a secondary water barrier with proper ventilation.
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