Spike's Calculators


Gable Roof - Wood Shingles Calculator

Calculate the amount of wood shingles needed for a gable roof.

Spike's Calculators

Species used for wood shingles usually depends on what is available in your area. There are many kinds that can be used including Redwood, Cedar, Pine, Spruce, Fir, Oak etc. (Keep in mind that not all types of trees belonging to a certain species are suitable for use as shingles.)

Wood Shingles Wood Shingles

Shingles Calculator

Building Length ft inch
Building Width ft inch
Eave Overhang inch
Gable Overhang inch
Roof Pitch /12
Exposure of Shingle inch
Waste %


Roof Area ft²
Ridge Length ft
Roof Angle °
Roof Slope %
Shingles to Cover Roof bundles
Added for Waste bundles
For Starter Strip bundles
For Ridge Capping bundles
Total Amount of
Shingles Needed:


  1. Enter the length of the building. (feet+inches)
  2. Enter the width of the building. (gable wall side, feet+inches)
  3. Enter the overhang of the eaves. (inches)
  4. Enter the overhang of the gable. (inches)
  5. Enter the pitch of the roof: (rise /12")
  6. Enter a waste factor (percentage)

The Results

The wood shingles calculation is based on:
Shingles coverage of one roofing square (100sqft) = 4 bundles @ 5" exposure, 1 bundle covers 25 square feet @ 5" exposure.
It adds 1 bundle for every 60 lineal feet of perimeter starter course.
It adds 1 bundle for every 25 lineal feet of ridge.
If you are planning to use premade capping for the ridge subtract the amount for Ridge from total bundles needed.
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