To do this you need to note that one tab will be equal to 1 foot.
How to measure a shed roof for shingles.
Inches enter the wall to upper pitch start.
This is simply 100 square feet of roof.
Times number of tabs per foot 7 tabs equals 56 tabs divided by 3 tabs per shingle 3 tabs equals the number of shingles required 19 shingles divide by shingles per bundle 26 shingles bundles required 1 bundle.
With that as background you are now ready to estimate how many shingles you will purchase for your roof project.
Finding the size of the roof in squares.
Feet inches enter the width of the building.
Estimating shingles 1 find the square footage of the roof.
A square simply refers to a 10 x 10 square of roofing.
Enter the attic of the home or any part where the roof framing is visible.
Enter the length of the building.
5 feet 1 5 m x 4 feet 1 2 m 2 10 square feet 0 93 m 2.
Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.
You will then have to get the measurement of the rake of the roof.
There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.
Note that in the last 3 4 years costs of roof shingles and many accessories have gone down by an average of 18 20 currently the us national average for benchmark architectural shingles is around 74 51 square or 25 per bundle.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
Total length of the roof ridge is 96 in.
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.
The length measured from the outside of the wall to where the upper.
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.
Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage.
Roofing contractors estimate projects and materials by the square so it is crucial to find this measurement to accurately estimate the amount of material needed.
Now we need to calculate the shingles required for the ridge cap.
Measure and mark a 12 foot distance along the floor in the same direction as the pitch of the roof.
Inches enter the overhang of the gable.