Extreme weather: Mitigating roof damage with spray foam | Icynene-Lapolla


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Extreme weather: Mitigating roof damage with spray foam

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Wind damage during an extreme weather event such as a hurricane can leave significant damage to a building. One particular area susceptible to significant damage is the roof. Water ingress from roof damage is considered one of the most commons insurance claims. One easy solution to address this problem is an unvented roof which is designed around spray foam. This helps protect the roof from damage due to fewer openings, thereby reducing the chance of water penetration.  

Open-cell spray foams, like Icynene Classic™ and Icynene Classic Max™, expand 100 times their size upon application to provide a superior air seal that seals and insulates the roof space. Every gap and crack is filled by the foam to seal the space. In the event of a roof leak, open-cell spray foam is vapor permeable allowing for bi-directional drying allowing leaks to be detected and repaired immediately. Bidirectional drying helps protect the roof sheathing from rot and moisture damage.

If closed-cell spray foam is used in the roof space, the foam’s water resistance qualities provide a barrier to help deflect water from coming into the space. This is particularly ideal for wind-driven rain, a common feature of hurricanes.

Where additional hurricane hold-down resistance is required, all Icynene spray foam products benefit an unvented roof by eliminating upward pressures from pressurizing the attic via roof vents.

Using either open-cell or closed-cell spray foam in the roof space helps to protect a building from roof damage. There are additional reasons why architects and builders should consider using spray foam, which Building Genius will explore. In the interim, Icynene’s Building Science and Engineering teams can discuss with you how you can successfully use spray foam in your hurricane-proof designs.

Your clients can learn more about how spray foam insulation aids remediation efforts here.

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