Wind Mitigation Roof Deck Secondary Water Resistance

Swr also called sealed roof deck or srd is a method or providing additional protection from water damage from typical roof covering failures common in wind and hail storms. In florida a wind mitigation inspection is performed by a licensed home inspector general contractor building contractor architect engineer or building inspector. Roof deck and secondary water resistance.

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The average discount for secondary water resistance swr is 8 of the windstorm part of your homeowner s insurance premium.

Wind mitigation roof deck secondary water resistance.

It is important to seal your roof deck or the layer in between the primary structure and the insulating layer of your roof. A water resistant roof underlayment layer or product that provides protection to the structure to which it is affixed in the event the primary roof covering is damaged removed or penetrated by wind driven rain as the result of hurricane force winds. 3 for group iii existing construction the features of the building or its location that determine the applicable factor are terrain category design code design speed design exposure roof covering opening protection roof deck and secondary water resistance. In the event of a catastrophic storm that damages the roof of the home one of the ways people can prevent water intrusion is to have what is called a secondary water resistant swr barrier.

The information gathered is presented on a standard wind mitigation form oir b1 1802 commonly referred to as the 1802 form. Typically this would be a self adhered modified bitumen roofing underlayment such as grace ice and water shield or certainteed winterguard. Water resistance secondary water barrier water intrusion can occur if shingles blow away in high winds or from debris. This serves as a barrier to prevent the water from entering the home even after the primary barrier the roof covering system such as shingles or tiles and related underlayment has failed.

But it will vary sometimes significantly between insurers. Sealing the roof deck requires using either a continuous self adhering roll or 4 6 inch wide self adhering roof deck tape. This part of a wind mitigation inspection focuses on glazed openings glass and non glazed openings entry and garage doors. Secondary water resistance is not something folks usually invest in unless they re installing a new roof.