Kansas, MO (PressExposure) March 07, 2012 -- MB Roofing, Inc. - As media continue to document the devastation wrought by Friday's tornadoes, Kansas City roofers stress the importance of correct asphalt shingle installation.
The wave of tornadoes reported by CNN killed at least 39 in Indiana, Kentucky, Ohio, Georgia, and Alabama, and affected an estimated 17 million homes from the Texas to North Carolina stretch as of yesterday alone.
"While the brunt of nature could take down entire houses, correct asphalt shingle installation can help most homes stall the wind damage and other problems," MB Roofing, Inc. said. Its statement aligns with previous findings from roofing manufacturer GAF which indicated that for 66 percent of roofing failures, poor workmanship is to blame.
According to the company, hiring professional Kansas City roofers can significantly reduce the degree of roof damage presented by light to moderate winds. The most common problems include curling, shingle torn-offs, and leaks, all of which can be mitigated if the following common mistakes are addressed:
Typical asphalt shingles require at least four nails for fastening, whereas special wind-resistant shingles require at least six. Oftentimes, it's not enough to rely on adhesives to do all the work. They need to be reinforced by nails too.
Roofers will need to refer to the specific manufacturer's instructions on where nails have to be positioned, as the placement will usually depend on the type and style of asphalt shingles used.
The wrong nailing techniques can be problematic. They usually fall between not driving the nails hard enough and using too much force, the roofing specialist revealed.
The former case could lead to nail pops whereas the latter will drive the nails all the way down to the deck, leaving the adhesive to do all the fastening work. The holes then become trigger points for leaking.
Failure to Seal
Yet a number of cases stem from inadequately sealed shingles. Some glue tabs are meant to self-seal but fail to do so even with the required temperature. Other adhesive strips just do not have the time to adhere properly to the roof because of poor weather following an asphalt shingle installation job.
Either way, shingles that fail to seal completely become more prone to the ravages of even light to moderate winds. The edges are first to curl before the entire shingle is finally dislodged.
Friday's tornadoes registered wind speeds of up to 200 mph, according to the National Weather Service. Asphalt shingles are typically designed to resist wind speeds of between 60 and 130 mph only.
"Severe weather conditions can destroy the toughest roofs," the company pointed out, "but homes whose asphalt shingles were installed using the proper techniques will stand a better chance of fighting the elements."