BASF announced that its closed-cell spray polyurethane foam (SPF) products have received hurricane-zone approval from the Miami-Dade County Building and Neighborhood Compliance (BNC) Department.
The company said tests and engineering evaluations of its COMFORT FOAM® and SPRAYTITE® (178 series) applied at roofing trusses increased the wind-uplift resistance of a traditional code-approved home roof by more than 200%.
Submission of this test data to the Miami-Dade County BNC office resulted in the first Notice of Acceptance (NOA) for this application, with approval for use in High Velocity Hurricane Zones, the company says.
“This new hurricane-zone approval adds high-wind mitigation to an already impressive list of product benefits,” said Michael Sievers, BASF business manager, spray systems. Sievers added that this type of specialty application must be installed by a BASF qualified contractor.
The Miami-Dade County NOA indicates that when BASF spray foam is applied as a 3-inch fillet along the truss and roof deck, it glues the roof down to provide a means of significantly strengthening the roof against failure during high-wind events. BASF also has Florida Building Code (FBC) product approval (FL #13001) for COMFORT FOAM and SPRAYTITE (178 series) SPF products.
The company says adding a total of three inches of closed-cell spray foam under the roof deck provides energy savings in addition to wind resistance. Reduced homeowner insurance premiums may also be an added financial incentive in some areas of the country. For maximization of insulating values, the company recommends a 3-inch continuous application to the entire roof deck.
More information on the energy and structural benefits of building or retrofitting with spray foam insulation: http://www.spf.basf.com.