Yes! In fact, it matters a lot! We’ve found that our customers often don’t realize that improper installation can actually void the manufacturer’s warranty on the roofing shingles. This means a problem that would have been fixed for free is going to come out of the homeowner’s pocket. It makes a cheap roof replacement seem like not such a great deal. American Roofing & Construction is careful to follow the shingle manufacturer’s installation instructions so your warranty stays intact.