Save yourself...Don't hire D&D! We bought great GAF HD shingles for our re-roof, and this company sent out want-to-be contractors who damaged the shingles, poorly installed the damaged shingles, and littered our yard and the children's play area with nails, sharp metal fragments, and debris, which I had to clean-up myself. We had to have the lawn power raked to the roots to clear out the nails and fragments, which will now require new sod. In addition, they came back and filled holes in the new shingles with roofing caulk and called it good. To make things worse, the HD shingles required 6 nails but these guys took as many shortcuts as possible with insufficient nailing. Please be careful when hiring anyone to work on your house, and don't hire these guys.