The length measured from the outside of the wall to where the upper.
How to measure shed roof for shingles.
Mark a length of 1 foot 0 30 m on a long level starting from one end.
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.
Inches enter the overhang of the gable.
Now we need to calculate the shingles required for the ridge cap.
Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.
Feet inches enter the width of the building.
Feet inches enter the overhang of the eaves.
Use our roof pitch calculator to find the pitch of your roof.
Inches enter the wall to upper pitch start.
Total length of the roof ridge is 96 in.
100 1 054 105 4ft 2.
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.
Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.
For example a 4 12 pitch roof that is 100 square feet.
You will then have to get the measurement of the rake 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.
Instructions enter the length of the building.
To do this you need to note that one tab will be equal to 1 foot.
From the 1 ft 0 30 m spot you marked on the level measure upward to the rafter.
Measure the pitch of your roof in the attic.