To Layer On Top Of Each Other Roofs Invebriate

Additionally make sure that the product you decide to use warranties this type of application.

To layer on top of each other roofs invebriate.

Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place. This is especially true if you ve overlayed your new shingles on top of warped shingles. Sheathing is a layer used as the base of the roof. Understanding the different layers of a roofing system is crucial to having a successful project and positive experience when hiring a roofing contractor.

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. Why you should not add another layer to your roof. Sheathings are panels that envelope the rafters. 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. 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. A re roof might not look good on an inspection report. Local codes might not allow re roofing.

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. Re roof or strip the roof down. Other parts of the roof are nailed to this later. Two layers is the maximum in most areas but some building codes allow only one.

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. Most roof decking is made from sheets of plywood. For example towns in climates with heavy hailstorm activity or significant ice dam problems may not allow multiple roofing layers. Here are the layers of a roof in order of application bottom to top.

Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. 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. Other components such as metal panels or shingles are attached to the sheathing later. It s usually a peel and stick product that adheres directly to the roof deck.

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. This layer covers the rafters and is beneath the shingles and membrane layers.