Shingle Wind Rating
Why Do Shingles Have Wind Ratings?
Wind rating is an overlooked aspect of shingle roofing. These wind ratings are important factors that helps in determining the type of shingle you want use in your home or business. Wind ratings are important because they can estimate the force of wind gust a shingle can take. All the roofing types carry`s different and unique wind ratings.
Fasteners are the key to determine the type of wind rating a shingle will receive. A normal shingle is qualified and tested for a 130 miles per hour wind rating that is almost level 5 hurricane. If the nail are installed on the correct part of your shingle then there is a chance that you can get a good wind rating. In shingle there is a line, and this line is the thickest part and a correct place to fasten the shingle. If by mistake the fastener is placed below or above the nail line the shingle will not hold up to wind gust. The best way to install a shingle is by hand nailing but this process is slow and it can cost you extra due to increased labor.
Shingle Wind Rating Test Standards
The international residential code, the international building code and the building construction and safety code require shingles to meet ASTM D- 3462 standards, this is one of the provisions that is used to test shingle. The test checks the reliability of the sealant strip to resist a 2.5 hour exposure to winds. These codes also bound the shingle to be installed only in those area of the country where wind speed is 110 miles per hour. Recently more wind speeds have been added to ASTM D-3161.
65 miles per hour and 110 miles per hour is considered to be the best test of the reliability of sealant strip and it also offers the relevant data that shows the nailing patterns recommended by the manufacturer. The common test for low slope roofing wind load normally uses a vacuum or pressure device to put on a load to a roofing system.