How To Figure Roof Area For Shingles

Ridge length top ridge plus the 4 hips in lineal feet.

How to figure roof area for shingles.

For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Find the square footage of the roof. You will then have to get the measurement of the rake of the roof. Mark a length of 1 foot 0 30 m on a long level starting from one end.

Measure both the width gable side and the length eave gutter side. For instance if the roof is 1550 square feet then it is 16 squares. Measure the length and width of each portion of the roof multiply length by. To accurately calculate the area of your roof you must first determine its slope or pitch.

Starter strip the perimeter of the roof in lineal feet. Outside of the u s a degree angle is typically used. Hold the end you measured from against the bottom of a rafter so it s sticking straight out horizontally and is level. 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.

Determine the bundles of shingles. Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments. To find the squares divide the overall roof area by 100 and then round up. How to estimate roofing materials.

Pitch measurement method 1. 8 inches and you have an 8 in 12 pitch. Total shingles needed the number of packs needed to cover the roof but does not add additional packs needed for ridge capping and starter strips. Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house.

To do this you need to note that one tab will be equal to 1 foot. The run is the distance from the outside edge of a perimeter stud wall to the center of the house. This is simply 100 square feet of roof. Roof pitches are described in terms of rise and run.

The rise is the distance from the top of a stud wall to the peak of the roof. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. Determine the total number of squares. 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.

Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. Roof area total square footage of the roof. Measure the pitch of your roof in the attic. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.

If this distance measures 4 inches you have a 4 in 12 pitch. Divide the total footage by 100 to determine the number of squares in the.