Roofs In Wind

Wind uplift is created when the air pressure below the roofing system is higher than the air pressure above the roof.

Roofs in wind.

Strong winds can cause sudden devastating roof damage when a severe storm moves through but asphalt roof shingles can also be negatively impacted on windy days when there s no rain hail sleet or snow in the forecast. Start with good structural design. The main concern from florida building code is that any structures or vents that may reside on the flat roof must be properly fastened and sealed. High winds can lift roofing material away or damage it with debris blown from elsewhere.

The most common roofing materials for pitched roofs are asphalt or composition shingles metal slate wood shingles and tile. The cost of the roofs with a wind resistance is higher than the average one. For the material that covers a flat roof wind resistance is less critical and the material tends to have negligible impact from salt spray. This includes structural components such as roof sheathing or rafters or roof cover components and the connections of these elements.

High winds can cause damage to your roof even without hail or other harmful weather. Keep in mind that the roofing system includes the surface materials and the fasteners used to attach them to the roof deck. In addition metal roofs don t need the periodic costly maintenance that other roofing materials often require. Each has different wind resistance characteristics.

Roof design wind loads are the wind pressures and resulting uplift forces for which the roof structure is designed. Specifically here are five tips that can help you make sure your home has the best roof for high winds. An intelligent floor plan can reduce the wind load on the roofing system of your home making it less likely to fail. There are several types of damage high winds can cause to your roof including leaks missing shingles and gutter problems.

Shingles roofs especially take a beating during high winds despite most being rated to withstand 90 mph winds. Whenever the wind blows over a roof s surface the air pressure directly above the roof decreases. Some metal roofs can sustain wind gusts up to 140 miles per hour will not corrode or crack and may be impact resistant depending on which metal you choose. Low resistance cost about 1 000 dollars extra and the high resistance about 3 000 dollars.

Your home s floor plan is the first thing to consider. 2012a b and the maximum pressure coefficient of 1 4 on the windward roof surface of the 10.