How Many Layers Of Shingles Are Allowed On A Roof In Ohio

On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing.

How many layers of shingles are allowed on a roof in ohio.

Consistent leaks shingle loss and mold growth can all point to the need for a new roof. Asphalt shingles typically can have one more layer added over the top two roofs total. For many years it was acceptable to put even the third layer. Fasteners for asphalt shingles shall be galvanized stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1 mm into the roof sheathing.

How many layers of fiberglass shingles can i put on a roof without removing the existing roof coverings. If the current roof is in poor shape re covering may not be a sound choice. New roof coverings shall not be installed without first removing all existing layers of roof coverings where any of the following conditions exist. Steep sloped roof products such as tile slate metal and shakes only allow one layer.

The soundness of the building you re re roofing is another consideration. When they tell me what neighborhood they re in i can also make a good guess about how many layers of shingles are already on the roof. How many layers of shingles are allowed on a roof. 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.

Adding a second or third layer of shingles adds significant weight to the structure. If it s 15 years old and they ve noticed loose granules washing off the shingles or running out of the downspouts it s a reroof candidate. Now you just have to decide whether to remove the existing roof shingles or recover the roof. 907 3 recovering versus replacement.

Other factors to consider. For example cedar or tile roofs are only allowed one layer. I live in milford pa how many layer of asphalt are allowed on a roof. Three layers of roof shingles too many for an insurance company.

Most cities and towns allow a maximum of two layers of shingles says chad muth president of muth company roofing in westerville ohio. December 18 2019 by taylor made roofing signs that your roof has reached the end of its life are typically fairly obvious. Re roof or strip the roof down. I m not sure about milford but i personally would never have more than 2 layers for all the reasons stated in my post above.