How Many Layers Of Roof Shingles Are Allowed In Ny

In some instances 3 layers may be allowed but this is rare.

How many layers of roof shingles are allowed in ny.

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. The contractor may do a walk on the roof and also inspect from the attic for any rot before installing a second layer of shingles. 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. That limit pertains to roofs with up to a 4 12 pitch.

Although the new york state building code does allow for up to two layers of roof materials. Generally it is fine to have three layers of shingle but you should check this 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. Most areas only allow for a maximum of two layers. Most building codes allow up to two layers of organic or fiberglass asphalt shingles.