Suction pressures and strain on roof edges and structural joints can lead to wind and water damage
Today’s homes with complex roof shapes may be vulnerable to high-speed winds. Researchers in Australia say that current building standards can underestimate suction pressures on roof edges of houses with complex roof shapes. Resulting strain on roof edges and structural joints can lead to further wind and water damage, they say. Another problem: architects and contractors seem to only consider a worst-case wind event from a single wind direction, while modern roof shapes are vulnerable to a variety of wind directions.