How To Measure A Gambrel Roof For Shingles

Shingling this type of roof is slightly more complex than shingling a flat or biplanar roof.

How to measure a gambrel roof for shingles.

Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. Calculate the amount of asphalt fiberglass shingles needed to cover a gambrel roof. So if the base is 5 feet 1 5 m and the height is 4 feet 1 2 m then you re equation would look like this. Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing.

A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. The base is the bottom edge of the roof while the height is what you measure from the base to the top of the triangle in a straight perpendicular line from the bottom edge of the roof. However laying the shingles on the slope is not hard if you work on a hot sunny day. The lower slope length is measured from outside wall to the start of the upper sloped roof section.

To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares. 5 feet 1 5 m x 4 feet 1 2 m 2 10 square feet 0 93 m 2. At this point you will also need to estimate or measure the overhang if you have one. A square of shingles is usually three bundles but it is sometimes four or five bundles if the shingles are manufactured to one of the smaller standard sizes.

This overhand measurement will need to be added to the measurement of the building. A gambrel roof has many individual sections with different slopes. Roofing materials are sold by the square. Calculate your roof pitch to determine how steeply your roof slopes.

Determine the number of squares of asphalt shingles you will need for covering the gambrel roof. Step 1 measure roof and purchase materials. To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a. For example you may need to pay double the cost in asphalt shingles if your roof has a 12 12 pitch a rise of 12 inches 30 cm per 1 foot 0 30 m as opposed to a 4 12 pitch.

Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof.