Pitched Roof Construction Materials

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Pitched roof construction materials.

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. A common choice for flat roofing material is epdm rubber as it is highly durable waterproof and can be made from recycled materials. Pitched roofs are most often associated with asphalt shingles although standing seam roofs are becoming ever more popular on pitched roofs as well. Although ceramic tile roofs are expensive they can have a life span of over 100 years.

The basic ranges of pitch are not uniformly defined but range from flat which are not perfectly flat but sloped to. Roof pitch area multipliers. The roofing materials most often used for these pitches include asphalt composite shingles. A 12 in 12 pitch is a steep 45 degree angle roof.

The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans. 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. Rolled roofing material is often used on roofs that are low sloped. See the image below for more explanation on rise run and pitch.

Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. The smallest pitch of a roof is 0 5 12. Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive. A great many residential roofs fall into this category.

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. 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. The average roof is 3 000 square feet or around 30 squares. If you are going to use shingles build a pitched roof over the mobile home.

Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. 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. The dead air space between the metal roof and shingle roof will work as a barrier to dissipate heat. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

For example a 4 12 pitch roof that is 100 square feet. You should use rolled roofing on a flat roof over lap 1 2 the width of the rolled roofing. Roofing material is estimated by the square which is equal to 100 square feet. 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.

Use our roof pitch calculator to find the pitch of your roof. 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.