Roofing Layers Allowed Florida

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Roofing layers allowed florida.

For many years it was acceptable to put even the third layer. 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. Two or more layers of any exist ing roof coverings. Are 2 layers of shingles allowed.

That limit pertains to roofs with up to a 4 12 pitch. 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. The requirement became effective on october 1 2007. 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.

Most building codes allow up to two layers of organic or fiberglass asphalt shingles. Steep sloped roof products such as tile slate metal and shakes only allow one layer. Asphalt shingles are the predominate roofing material used to roof homes in florida. 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.

While this is acceptable under the florida building code it is the maximum number of layers allowable. A roofing contractor will know exactly how many layers of roof shingles are allowed in your area for your building but it is normal that you will be permitted up to three layers of shingles. This roofing system has two layers of material. When roof system removal is required the code stipu lates all layers of existing roof systems need to be removed down to the deck.

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. Another important florida roofing rule is the 25 percent rule. If this is your first visit be sure to check out the faq you must register before you can view photos and images. If i choose to re roof over the existing roof covering will i still have to comply with the existing building code.

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. I live in seminole florida. Asphalt shingles typically can have one more layer added over the top two roofs total. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing.