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Schenectady Roofing: Article About Shingle Wind Ratings

Ideal Construction: Experienced Roofers Schenectady NY
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Many homeowners are unaware that all asphalt shingles come with a wind rating. A wind rating is a number assigned by the shingle manufacturer that essentially guarantees the velocity of wind that a shingle can withstand before being blown off a roof. Shingle wind ratings are a factor that shingle manufacturers and roofing companies take into consideration when determining the value and overall length of roofing warranties as well as the amount of protection covered under specific warranties. For homeowners with questions or concerns about wind ratings, a Schenectady roofing professional will be available to provide more information on this subject.

There are two primary factors that shingle manufacturers use to determine a particular shingle's wind rating. First, the total number of nails used to fasten the shingle to the roof is taken into consideration. This is simply because a shingle attached with more nails will sustain higher winds and thus is awarded a higher wind rating.

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A standard laminated asphalt shingle that is supposed to be attached with a minimum of 4 nails may have a wind rating of 110 miles per hour, while the same shingle installed with 6 nails is rated to sustain category 5 hurricane winds of 130 miles per hour. Homeowners should ensure that asphalt shingles are attached with roofing nails rather than staples, because the use of staples often voids wind damage coverage under most manufacturer warranties.

Secondly, the point of attachment of a shingle has a significant effect on its ability to hold to a roof when blown with winds up to its designated wind rating. Asphalt shingles have a clearly visible layer of laminated material about an inch wide within which the nails are intended to be driven. The nails must be fastened within this space for a shingle to stay on the roof when subject to winds up to its wind rating.

There are many different types of asphalt shingles available on the market today. Each type has unique characteristics and attachment procedures that give it a unique wind rating. The most common type of asphalt shingles are 3 tab shingles, architectural laminate shingles, and presidential or tri laminate shingles. Three tab shingles usually carry a manufacturer wind rating of 60 to 70 miles per hour while architectural shingles can sustain winds of 110 to 130 miles per hour. The interlocking shape of tri laminate shingles make them the strongest, with a wind rating of 130mph or more.

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