To Layer On Top Of Each Other Roofs

Also place a nail 2 inches from each end of the shingle in line with the other two.

To layer on top of each other roofs. More difficult to check deck when you tear off the old roof you get a look at what s underneath. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. Two layers is the maximum in most areas but some building codes allow only one. For example towns in climates with heavy hailstorm activity or significant ice dam problems may not allow multiple roofing layers.

It s usually a peel and stick product that adheres directly to the roof deck. Steep sloped roof products such as tile slate metal and shakes only allow one layer. This is especially true if you ve overlayed your new shingles on top of warped shingles. Roof deck is the roofing material that sits on top of the roof trusses.

Local codes might not allow re roofing. The roof is a system composed of layers of different materials that work together to keep wind and weather out of your home. A re roof might not look good on an inspection report. Here are the layers of a roof in order of application bottom to top.

Since it s being put on top of another less than perfect roof it s likely that it may not look as good as a brand new roof would. Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. Asphalt shingles typically can have one more layer added over the top two roofs total. Use 1 5 or 1 75 inch roofing nails.

Understanding the different layers of a roofing system is crucial to having a successful project and positive experience when hiring a roofing contractor. 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. You don t have. Water shield is the next roofing layer that creates a water proof barrier where ice or water can buildup near the roof eaves.

Now you just have to decide whether to remove the existing roof shingles or recover the roof. 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. Each layer has a specific purpose that when combined with the other components provides protection to your home. For many years it was acceptable to put even the third layer.

Most roof decking is made from sheets of plywood. Each part of the system contributes to protecting your home from severe weather. Nailing here will cause the next shingle to cover the nail heads and allow the next and subsequent rows of nails in shingles to always penetrate and hold the top edge of the lower row this allows 8 nails to hold each. By placing shingles on top of a damaged roof you ll affect the way the roof looks.