Pitch Asphalt Roof

Shingles of all types need to have a slope to function properly.

Pitch asphalt roof.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. 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. Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.

Asphalt and pitch roofing involves the use of hot chemicals that add an additional layer of complexity and hazard to a roofing job. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. Asphalt shingles require a minimum roof pitch of 2 12 or greater. The asphalt shingle roof is the widely used roof covering in north america.

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Asphalt shingles continue to be the most widely installed roof covering option in north america. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. What is the minimum pitch slope of an asphalt shingle roof.

People choose this roof over other roofing options due to its easy installation and adaptability. This roof is resistant to extreme weather conditions and can add great value to your home. Pitched roofs are most often associated with asphalt shingles although standing seam roofs are becoming ever more popular on pitched roofs as well. The minimum requirement is 2 12.

What is the minimum slope for an asphalt shingle roof. For every 12 inches you travel on your ceiling the roof will rise 4 inches in height. Roofing systems originally consisted of alternate layers of hot bitumen and reinforcement. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch. For those who don t understand the roof pitch number here is a way to envision it. Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12.

Coal tar pitch was a by product of processing coal to make coke which in turn was used in making carbon steel and electrodes for the aluminum industry. California roofing laws cover everything from licensure of the roofing company to the types of shingles that must be used to the slope of the roof. 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. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.