This Old House

Roof Replacement Tips

Tom Silva

Roof Replacement Tips

Find out how to tell when your asphalt roof shingles are worn out to the point that you need to replace them. Learn why you should always remove the old layer of asphalt shingles before installing a new roof. Get tips on stripping the roof down to the sheathing to make sure the sheathing is in good condition before you put on an ice and water shield.