A Roof Shingle’s Wind Damage Resistance

A Roof Shingle’s Wind Damage Resistance
Roof Installation Workmanship: Fasteners/Nailing Problems, Wind Damage appeared to have led wind blow-off of these Atlas shingles, though an investigation of whether or not the shingles had self-sealed was also needed.
Weather: Wind damage can happen to any asphalt shingle roof in severe weather conditions. However if shingles are not properly nailed, shingles are far more likely to blow off of the roof in even a modest windstorm.
Proper roof shingle nailing: Roofing product manufacturers are careful to specify where shingle nails should be placed in each shingle and the number of nails required. These specifications may vary by shingle type and building location, with more nails specified for high-wind areas such as asphalt shingle roofs applied in coastal areas.
Components of roof shingle wind damage resistance: Asphalt shingle wind resistance combines several factors including the effectiveness of the glue strips on the shingle backs which adhere the shingle courses against wind-uplift, roof pitch, roof orientation with respect to prevailing winds, and importantly, proper shingle nailing patterns.
Not only must nails be properly placed and spaced, improper nailing itself, such as driving a nail through the shingle, leaving a nail sticking up to cut a shingle above, or using a roofing stapler improperly leaving cocked staples or shingle-cutting staples will all encourage shingles to fly away with the wind.
If an new roof has the bad luck to encounter a severe wind storm shortly after asphalt shingles have been installed, it is possible that the shingles will blow off of the roof because their self-sealing tabs have simply not had time (or warm enough weather or enough sun) to adhere.