How To Figure Roof For Shingles

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

How to figure roof for shingles. Use our roof pitch calculator to find the pitch of your roof. Roof area measured in sq ft number of squares. From the 1 ft 0 30 m spot you marked on the level measure upward to the rafter. This roof shingle calculator requires four basic inputs.

The number of squares determines the amount of shingles needed. Roof length measured in feet roof width measured in feet roof pitch. Find the square footage of the roof. If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet.

The pitch of the roof is the rise over a 12 inch run. 100 1 054 105 4ft 2. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. Hip roof asphalt shingles calculator calculate the amount of asphalt or fiberglass shingles needed to cover a hip roof.

Roof type either gable or hip using these four inputs you will get several basic outputs. A hip roof s square footage is equal to that of a gable roof with the same dimensions. Measure both the width gable side and the length eave gutter side. When figuring the amount of shingles needed to roof a house you first convert the total square footage of the roof to squares a square represents 100 square feet of area covered by shingles.

You will then have to get the measurement of the rake of the roof. Determine the bundles of shingles. Divide the total footage by 100 to determine the number of squares in the. Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house.

To do this you need to note that one tab will be equal to 1 foot. Mark a length of 1 foot 0 30 m on a long level starting from one end. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. The difference is in the amount of ridge capping you need and the amount you will waste.

Roof pitch area multipliers. To accurately calculate the area of your roof you must first determine its slope or pitch. For example a 4 12 pitch roof that is 100 square feet. Measure the length and width of each portion of the roof multiply length by.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Singles are often sold in bundles with three bundles equaling one roof square. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Measure the pitch of your roof in the attic.

Determine the total number of squares.