Why Gabeled Roofs Are A Problem In High Wind

The tornado that stormed through joplin mo on may 22 shredded an estimated 8 000 buildings and stranded desperate families that now must decide whether to rebuild or find a new home.

Why gabeled roofs are a problem in high wind.

High wind hazard a gable roof is one of the simplest roofs to construct but it isn t the best choice in high wind areas. A typical 2 slope gable roof is often times cheaper to build but it allows the wind to catch the roof and it is much more easily blown away. Where a moderately high wind is expected the cost might increase to as much as 3000. As strong and sturdy as your roof is remember that it won t be able to withstand high uplift pressures if your doors and windows aren t protected.

A roofing system isn t just 5 smart tips for choosing the best roof for high winds read more. 2 blow offs tenting reduced wind uplift resistance and billowing. Although the dangers of damage to roofs from hurricane winds are vaguely appreciated by most people the nature and distribution of wind forces are not generally understood. A single storm can destroy a roof in many cases.

Other wind damage to a roof includes damage caused by falling objects and debris such as tree branches and downed powerlines. And ironically one of the biggest factors in damage to a roof is windblown debris often the debris of other people s failed roofs. Hip roofs four sided roof design are more aerodynamic and inherently more resistant to uplift forces of high wind than gable end and other roof designs. Hot bituminous roofs where flashing is poorly attached may experience open seams and laps and ultimately cause blow offs reduced puncture resistance and code issues advises care.

In high wind areas you may need to spend closer to 5000. But there are things you can do to protect your roof and therefore your home. The cost of the roofs with a wind resistance is higher than the average one. Redesigned roofs withstand high wind events.

Building a 4 slope hip style roof has been found to lessen the load of the wind on the house. If wind speeds are very high even new secure shingles can tear away. Originally published august 1965. Low resistance cost about 1 000 dollars extra and the high resistance about 3 000 dollars.

It all depends on the quality of the chosen material and the amount of the resistance against the wind. If your home has a gable roof two sided pitched roof the end wall takes a beating during a hurricane and typical framing methods create a vulnerable hinge line at the joint between levels. The wind can work its way under the roofing materials and peel them off or it can blow under the soffit and lift the roof right off the structure. Wind pressures and suctions on roofs.

Proper installation will only end the damage caused by high winds. Leaks are not the only problem that can result from improperly installed flashing. For those choosing to rebuild rima taher an expert on wind resistant structures has a bit of advice.