A roof replacement is only as good as what goes on the deck. Every replacement we install in Irwin is a complete system from Owens Corning or Atlas, not just a new layer of shingles: we strip the old roof down to the decking, replace any rotted boards we find, and rebuild with new underlayment, ice and water shield in the valleys and along the eaves, drip edge, and ridge ventilation. You choose the shingle, whether that is architectural asphalt for curb appeal or a low slope system for a porch or addition, and it comes backed by a 50 year manufacturer warranty and our 10 year workmanship warranty.