How Many Layers For Fixing The Roof

Here are the layers of a roof in order of application bottom to top.

How many layers for fixing the roof.

There are some advantages to roofing over existing shingles says dale richards owner of richards roofing in troy michigan. The homeowner will have two layers of shingles protecting the roof and the home is less likely to have ice dams he says. Decking most often made out of plywood this roof layer is installed over the framing in a typical roof install. Richards also estimates that the homeowner saves at least 1 000 in costs associated with removing and properly disposing of the existing shingles.

Therefore if you already have two layers you ll need a full tear off. Epdm roofing and tpo roofing are also known to be able to typically maintain two layers of roof without causing problems. As mentioned above homeowners are legally limited to two layer of roof shingles. For many years it was acceptable to put even the third layer.

Every roof can be different in certain ways. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. However in almost all areas it is not acceptable to install more than two layers of roofing on any commercial building.