Roofing Layers Allowed Florida

Another important florida roofing rule is the 25 percent rule.

Roofing layers allowed florida.

If i choose to re roof over the existing roof covering will i still have to comply with the existing building code. And when the existing roof system is wet or deteriorated to the point it will not be a suitable substrate. While this is acceptable under the florida building code it is the maximum number of layers allowable. I live in seminole florida.

Asphalt shingles are the predominate roofing material used to roof homes in florida. When you replace a roof on a home that was built before the implementation of the statewide florida building code on march 1 2002 the nailing of the roof sheathing decking must be brought up to current standards for hurricane resistance as part of the installation of the new roof. 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. Asphalt shingles are composed of a base material which is either an organic felt of a glass fiber mat asphalt and surfacing material which is generally a mineral granule.

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. When roof system removal is required the code stipu lates all layers of existing roof systems need to be removed down to the deck. The code includes several specific excep tions to its roof system removal and replace.

The requirement became effective on october 1 2007. For many years it was acceptable to put even the third layer. Two or more layers of any exist ing roof coverings. To start viewing messages select the forum that you want to visit from the selection below.

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. 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. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. Are 2 layers of shingles allowed.

Yes provided the existing roof covering is suitable as a base for the installation of the additional roofing as stipulated by section 611 3 of the florida existing building code. If this is your first visit be sure to check out the faq you must register before you can view photos and images. That limit pertains to roofs with up to a 4 12 pitch. Steep sloped roof products such as tile slate metal and shakes only allow one layer.