When dealing with clay tile roofing, the choice between overlay and tear-off is important and depends on the current roof condition. An overlay involves installing new tiles over the existing ones. This can save time and money because it reduces labor and disposal costs. However, it’s only suitable if the existing structure is sound, without rotting wood or damaged underlayment. The added weight of a second layer is a concern since clay tiles are heavy, and your roof framing must be able to support that extra load. A simple way to check is to examine your attic or the underside of the roof decking for any signs of water damage, sagging, or weakened rafters. Also, look closely at the existing tiles; if many are cracked or loose, a tear-off may be more appropriate. DIY checks should focus on these visible signs and ensure there’s no mold or structural trouble before considering an overlay.
A tear-off means stripping the old clay tiles and underlayment down to the decking, allowing for a fresh start and easier inspection of the roof deck. This is often safer long-term if the roof has had leaks or if the underlayment is deteriorated. Tear-offs are more expensive and labor-intensive but tend to provide better warranties and peace of mind, as everything is new and any hidden problems are addressed upfront. When consulting a contractor, it’s helpful to ask if your roof framing can handle the extra weight of an overlay and what their experience is with overlay installations on clay tiles. Also, inquire about the warranty differences between a tear-off and overlay to understand how each option will protect your investment. A good roofer will provide honest advice tailored to your roof’s condition and local building codes.