How Many Layers Of Roof Shingles Are Allowed In Florida

If the current roof is in poor shape re covering may not be a sound choice.

How many layers of roof shingles are allowed in florida.

Asphalt shingles typically can have one more layer added over the top two roofs total. Another important florida roofing rule is the 25 percent rule. Eliminating the tearoff can easily save 1 000 or more on a new roof but you re really just delaying the cost. When it s time to replace your roof there are several factors that might lead your roofing professional to recommend adding shingles on top of your existing layers.

When replacement is required there will likely be an added expense in removal and disposal of the material it s not a deficiency so i just give an informational statement. This law states that if more than 25 percent of a building s roof must be replaced within a 12 month period then the entire roof may need to be replaced. The soundness of the building you re re roofing is another consideration. This roofing system has two layers of material.

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. When it s time to replace the roof again and you have no choice but to start anew two layers is the maximum allowed in most areas you ll have to pay extra for the two layer tearoff and disposal. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. Steep sloped roof products such as tile slate metal and shakes only allow one layer.

For example cedar or tile roofs are only allowed one layer. That limit pertains to roofs with up to a 4 12 pitch. There are slight differences to the rule for buildings in or out of an hvhz so it is important to know where your building lies. 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.

For many years it was acceptable to put even the third layer. Most building codes allow up to two layers of organic or fiberglass asphalt shingles. Manufacturers warranties generally range from 15 years to 40 years depending on the type of shingle. Adding a second or third layer of shingles adds significant weight to the structure.

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.