To Layer On Top Of Each Other Roofs Invebriate

Other components such as metal panels or shingles are attached to the sheathing later.

To layer on top of each other roofs invebriate. For example towns in climates with heavy hailstorm activity or significant ice dam problems may not allow multiple roofing layers. Additionally make sure that the product you decide to use warranties this type of application. This layer covers the rafters and is beneath the shingles and membrane layers. Understanding the different layers of a roofing system is crucial to having a successful project and positive experience when hiring a roofing contractor.

Now you just have to decide whether to remove the existing roof shingles or recover the roof. Use 1 5 or 1 75 inch roofing nails. Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. Two layers is the maximum in most areas but some building codes allow only one.

However most building codes limit a home to only having two layers most homes can handle two layers but adding a third can greatly stress rafters and other structural parts of your home. Here are the layers of a roof in order of application bottom to top. Other parts of the roof are nailed to this later. Most roof decking is made from sheets of plywood.

Having multiple layers of shingles is going to make your roof hotter because the heat gets trapped between the layers which could mean premature aging of the shingles. Sheathings are panels that envelope the rafters. A re roof might not look good on an inspection report. But contractors who spoke with angie s list say best practices call for stripping the roof down to the wood deck to inspect it before installing a new roof.

Apply a liberal amount of plastic roof cement at the base of any fixtures plumbing pipes or roof vents which break the plane of the roof surface. Why you should not add another layer to your roof. Local codes might not allow re roofing. It s usually a peel and stick product that adheres directly to the roof deck.

This is especially true if you ve overlayed your new shingles on top of warped shingles. Once you have discovered how many layers of roof shingles are allowed the next decision you should make is whether you will have the existing shingles completely removed to make way for two or three new layers or whether you will have another layer of shingles placed on top of the existing layer. Re roof or strip the roof down. Each part of the system contributes to protecting your home from severe weather.

Sheathing is a layer used as the base of the roof. When shingles laying on two roof planes approach each other in a valley weave the layers of shingles across the valley to create an integrated unbroken water barrier across the valley.