The Insurance Institute for Business & Home Safety (IBHS) has conducted a full-scale research test program of how wind-driven water, such as that occurring during hurricanes, penetrates openings in residential roof systems.
“Wind-driven rain that gets into a house through openings in the roof can collapse ceilings and cause extensive damage to interior finishes, furnishings, and other family possessions,” said Julie Rochman, president & CEO at IBHS. “The testing conducted by our engineers clearly demonstrated that water penetration during hurricanes could be substantially reduced by sealing the roof deck seams.”
For new construction or re-roofing, roof deck seams can be sealed from the exterior using a modified bitumen tape. For retrofitting when the roof cover is not replaced, homeowners can seal the roof deck seams from the inside with a closed-cell foam spray adhesive.
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