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

The soundness of the building you re re roofing is another consideration.

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

For roof slopes 4 12 and greater one layer of felt is required. Ah texas the state of tacos 5 movies and outlet mall shopping. 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. 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.

In most cases two layers of shingles is advisable and three aren t normally required but if you live in an area that suffers from particularly strong wind or lengthy periods of heavy rain then you may want to consider a third layer. There are plenty of reasons to make texas your home and with houses in texas being some of the largest in the country there s a lot to love. Or shall be not less than two layers of 15 pound felt lapped 18 inches and nailed through both sheets on six inch centers along the lap and on 12 inch centers in the area between laps with tin caps and one inch nails. Asphalt shingles typically can have one more layer added over the top two roofs total.

Two layers of felt are required for roof slopes from 2 12 up to 4 12. Steep sloped roof products such as tile slate metal and shakes only allow one layer. If the current roof is in poor shape re covering may not be a sound choice. Or where the underside of the roof sheathing is to.

That limit pertains to roofs with up to a 4 12 pitch. Make sure the roofer installs the felt as required by the twbc and the shingle manufacturer. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. For example cedar or tile roofs are only allowed one layer.

Most building codes allow up to two layers of organic or fiberglass asphalt shingles. Adding a second or third layer of shingles adds significant weight to the structure. 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. A minimum of no 15 underlayment felt is required for asphalt shingle installations.

Eliminating the tearoff can easily save 1 000 or more on a new roof but you re really just delaying the cost. Iv the first layer or anchor sheet shall be not less than 30 pound felt nailed six inches on center along with a two inch lap and nailed 12 inches on center both ways in the area between laps with tin caps and one inch nails. 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.