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

However as a general rule you should not add extra shingle layers to your roof if it already has two shingle layers.

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

Regulations allow a maximum of two layers of shingles on a roof but experts say you shouldn t lay asphalt shingles over an existing roof. That limit pertains to roofs with up to a 4 12 pitch. For many years it was acceptable to put even the third layer. Steep sloped roof products such as tile slate metal and shakes only allow one layer.

An owner must complete and sign the disclosure form and submit the form to a prospective buyer before an offer is accepted for the sale of the real estate. Tear it all off and start from the bare wood. Three layers is getting up there in weight as well. 2 layers is definitly the max in most counties as far as 5 i ve seen it on some older houses up here in ri.

Indiana law ic 32 21 5 generally requires sellers of 1 4 unit residential property to complete this form regarding the known physical condition of the property. Asphalt shingles typically can have one more layer added over the top two roofs total. Most building codes allow up to two layers of organic or fiberglass asphalt shingles. The average 30 square roof uses 90 bundles of shingles and a bundle of asphalt roofing shingles weighs about 100 pounds which means you re putting roughly 9 000 additional pounds of weight on your roof.

I would tear it all off if your going through the trouble. Generally it is fine to have three layers of shingle codes but you should check this is the case with your local building permit people and you should make sure that your roof and the rest of the structure have the strength to cope with the extra weight. Truth be known there are ways of hiding how many layers are on the roof. If you have two layers of shingles that are worn out a good alternative would be to remove those layers and replace them with two new ones as opposed to adding on a third layer.

According to the international existing building code homes can be re roofed one time by applying a second layer of roof shingles over the existing one but after that application begins to wear both layers need to be removed before a brand new roof is installed. Your three layer roof is definitely a potential structural concern and homeowners insurance companies might consider three layers of roof shingles.