Pitched Roof Construction Materials

The pitch of the roof is the rise over a 12 inch run.

Pitched roof construction materials. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Use our roof pitch calculator to find the pitch of your roof. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. You should use rolled roofing on a flat roof over lap 1 2 the width of the rolled roofing.

If you are going to use shingles build a pitched roof over the mobile home. The pitch matters for a variety of reasons including the type of roofing material used walkability proportions to the building as a whole which is sometimes a critical factor in some architectural styles such as a steep pitch in gothic architecture and a low pitch in classical architecture and combinations of pitches form distinctive roof shapes such as a gambrel roof. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. The roofing materials most often used for these pitches include asphalt composite shingles.

100 1 054 105 4ft 2. The basic ranges of pitch are not uniformly defined but range from flat which are not perfectly flat but sloped to. Shingles can be fabricated from a wide range of materials such as asphalt least expensive to natural wood metal tiles and heavy slate most expensive. A 12 in 12 pitch is a steep 45 degree angle roof.

Pitched roofs are most often associated with asphalt shingles although standing seam roofs are becoming ever more popular on pitched roofs as well. Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive. Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches. If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally 1 12 pitch it is a good candidate for rolled roofing as long as you use the concealed nail method of fastening.

The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans. Although ceramic tile roofs are expensive they can have a life span of over 100 years. Rolled roofing material is often used on roofs that are low sloped. The smallest pitch of a roof is 0 5 12.

See the image below for more explanation on rise run and pitch. A completely flat roof is a poor design as water and snow will collect on it eventually leading to your roof collapsing in from the weight of it all. The average roof is 3 000 square feet or around 30 squares. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years.

The dead air space between the metal roof and shingle roof will work as a barrier to dissipate heat. Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. For example a 4 12 pitch roof that is 100 square feet. A mobile home roof should not be flat.

Roof pitch area multipliers. A common choice for flat roofing material is epdm rubber as it is highly durable waterproof and can be made from recycled materials.