Phone: (516) 520-6687
Email: atlanticexteriorsinc@gmail.com

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I highly recommend Atlantic Exteriors, they are very hard working and quick, the job was great and the cost was fair.
Bayshore, NY

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How to determine your roof slope

The slope of your roof is determined by the vertical rise in inches for every horizontal twelve inch (12") length (called the "run"). It is expressed with the rise mentioned first and the run mentioned second. For instance, if your roof has a four inch (4") rise for every horizontal foot, then it has a "4 in 12" slope (or pitch).


A fairly easy way to determine the slope is to take a 12" level and set one end on the roof surface and make it level. Then take a tape measure or ruler and measure from the other end down to the roof surface. This will give you the slope of the roof. The slope of the roof in the following picture would be expressed as "4 in 12" or "4 on 12" and written as 4/12, 4:12, or 4":12".



    Roof Pitch
    Determining Your Roof's Slope
    Roof Types
    Eave Detail
    Key Danger Signals
    Ice Dam Prevention
    Signs Of A Failing Roof
    5-Part Roofing System
    Effective Ventilation