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BobVila.com > Channels > Roofing & Siding > All Tips > Class 4 Shingles Class 4 ShinglesIf you are replacing your old, worn out roof covering with new asphalt shingles, make sure they have a Class 4 rating under Underwriters Laboratories' (UL) 2218 standard. A Class 4 rating tells you a sample of the product did not crack when hit twice in the same area by a two-inch steel ball. Related Showrooms• Renovation Experts - Put your home in good hands. Get FREE estimates on your project.• Sears - Vinyl Siding, Eaves and Overhangs • Western Red Cedar Lumber Association - Real Cedar for Siding, Decking and Outdoor Projects • InsWeb - Lower Your Homeowners Insurance Bill up to 25% Online | |
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