SPF Roofing stands up to hurricane winds

How Spray Foam Roofing Fares

Below are links to the NIST (National Institute for Standards and Technology, USA) reports on the impacts on structures from hurricanes Katrina and Rita. The reports are very favorable toward spray foam roofing. See select quotes, summaries and the complete 270-page report below.

Chapter 3.2 Roofing page 55
3.2.3 Spray Polyurethane Foam (SPF) Roofing Systems page 69

“A number of spray polyurethane foam (SPF) roofing systems were observed in the Pascagoula, MS area. Some of these roofs were estimated to be about 20 years old. With one minor exception, all were found to have sustained Hurricane Katrina extremely well without blow-off of the SPF or damage to flashings. In the case where damage was observed, the SPF had been applied to a wood fiber insulation that had been mechanically fastened to the metal deck with an inadequate number of fasteners. Failure likely occurred when the insulation board delaminated from the deck. The area of the failure was less than 1 percent of the total roof area.”

Louisiana SuperDome Roof page 62-63
Chapter 6 – Key Findings and Observations

“Spray foam roofs were the only type of roofing system described as having performed ‘extremely well’.”

6.2.2 Roofing page 176 -177

“A limited number of spray foam (SPF) roofing systems was observed in the hurricane Katrina damage zone. Such roofing was found, with minor exception, to have sustained the winds extremely well without blow-off of the (SPF) or damage to flashings.”

Links to each report: