Tornadoes: Roof - Protecting Your Roof Deck

Material provided by Federal Alliance for Safe Homes http://www.flash.org/

The roof deck forms one of your home's critical shields of protection from high winds and rain. Unfortunately, if this shield is not fastened properly it may be lost during high winds.  

While the loss of roof coverings can make your home vulnerable to water infiltration, loss of the roof's sheathing, often referred to as decking, can result in excessive damage to the structure of your home and your possessions. 

As wind blows over the roof, uplift forces pull at the roof. These uplift forces try to pull off the roof covering and the roof deck. When the roof decking is blown off, the inside of your home becomes exposed to the elements. Trusses or rafters may become unstable and the entire roof may collapse.   

Tips

The following techniques can be used during roof installation on both new and existing homes, and are best performed by a licensed, professional contractor: 

Finally, you can significantly increase the roof's sheathing resistance to uplift from the wind by applying a bead of construction adhesive using a caulking gun along both sides of the intersection of the roof decking and the rafters or trusses. Be sure to look for a premium, APA AFG-01 rated adhesive.

Benefits of Using This Mitigation Strategy

Technical Information Provided by FEMA