Pitch Asphalt Roof

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.

Pitch asphalt roof.

Asphalt and pitch roofing involves the use of hot chemicals that add an additional layer of complexity and hazard to a roofing job. People choose this roof over other roofing options due to its easy installation and adaptability. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. For those who don t understand the roof pitch number here is a way to envision it.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. This roof is resistant to extreme weather conditions and can add great value to your home. Make sure to get training on general roofing hazards and working at heights. What is the minimum pitch slope of an asphalt shingle roof.

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. Metal roof shingles require a minimum roof pitch of 3 12 or greater. Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below. For every 12 inches you travel on your ceiling the roof will rise 4 inches in height.

Asphalt shingles continue to be the most widely installed roof covering option in north america. The asphalt shingle roof is the widely used roof covering in north america. 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. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Asphalt a by product of processing petroleum to make gasoline fuel oil and various hydrocarbon polymers was also popular. California roofing codes establish a list of rules that all builders and contractors must adhere to in order to ensure safe building practices within the state. Roofing systems originally consisted of alternate layers of hot bitumen and reinforcement. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. What is the minimum slope for an asphalt shingle roof. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.

Shingles of all types need to have a slope to function properly. Asphalt shingles require a minimum roof pitch of 2 12 or greater. Pitched roofs are most often associated with asphalt shingles although standing seam roofs are becoming ever more popular on pitched roofs as well. Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12.