The Shingles for a Roof calculator computes the number of shingle bundles (33.33 ft² each) needed to cover a common gabled roof based on the roof dimensions.
INSTRUCTIONS: Choose units and enter the following:
- (L) Ridge Length
- (S) Roof Span
- (P) Pitch of Roof (choose one: 1/12,2/12,3/12,4/12,5/12,6/12,7/12,8/12,9/12,10/12,12/12,14/12)
- (oH) Overhang
Shingle Bundles (B): The calculator returns the following:
- Number of bundles of shingles needed to cover roof area
- Underlayment total surface area
- Linear Feet of Ridge Cap
- Linear Feet of Starter Roll (eaves and rakes)
- number of roofing nails for normal wind conditions
- number of roofing nails for high-wind conditions.
The Math / Science
The Shingles for a Roof calculator:
- Computes the surface area of the roof.
- Adds area (+ 6") for the double layer of shingles on the first row of both sides of the roof.
- Divides the surface area by the area coverage of one bundle of shingles (33.33 ft2)
The Ridge Shingles are calculate as the Ridge Length divided by 25 linear feet for a bundle of Ridge Cap Roofing Shingles
The Roofing Starter is calculated as twice the ridge length for both eaves plus then calculated length of both rakes (sloped sides).
Single Price Survey Data
The Roofing Shingles Cost Survey list the observed price of a bundle of shingles. A bundle is equal to roughly (`33 1/3 ft^2`) or one third of a roofing square (100 ft2). The survey includes a date, the name of the store, the five price points for shingles: economy, low, median, high and premium.
One should use the pricing for roofing materials that can be bought locally. However, the following prices are for different quality grades of shingles in the United States:
- Shingle Price Survey Online Source : Lowes
- Shingle Price Survey Date: 12/22/22
- Cost of Premium Shingles: $90.0 USD.
- Cost of High Grade Shingles: $52.34 USD.
- Cost of Medium Grade Shingles: $43.32 USD.
- Cost of Low Grade Shingles: $37.98 USD.
- Cost of Economy Grade Shingles: $36.0 USD.
All prices are for one bundle of shingles which cover 33.33 ft2.
Roof Calculators
- Gabled Roof
- Hip Roof
- Shed Roof
- Dormers
Building Calculators
- Total Building Materials Calculator
- Pitch of a Roof - Computes angle of incline in the roof in both degrees and rise over 12" run (e.g. 26.6o : 6/12) based on the length of the rise and run.
- Number of Trusses Needed for a Roof - number of trusses needed based on the roof width and the truss spacing.
- 4x8s needed for a roof - Calculates the number of 4x8 sheets needed to cover a roof.
- Roofing nails needed for a roof - Calculates the number of roofing nails needed for a roof in normal and high wind conditions.
- Number and Length of Metal Roof Panels - Computes the length and number of metal panels and trim pieces for a metal roof.
- Screws for a Metal Roof - Computes the number of screws needed for a metal roof.
- Number and Length of Purlins for a Roof - Computes the number of purlins for a roof based on dimensions and spacing.
- Number and Length of Rafters - Computes the number and length of rafter boards based on roof dimensions and spacing.
- Number and Length of Rafter and Collar ties - Computes the number and length of rafter ties and collar ties based on roof dimensions and spacing.
- Number and Length of wall top and bottom wall plates
- Number of Studs for a Room
- Number of Studs in a Wall
- Room Interior Area (wall and ceiling)
- Cubic Feet in a Room (volume)
- Number of 4x8 or 4x12 Sheets for a Room
- Number and Length of Floor Joists
- Number of Joist Hangers
- Compute the Cost of Floor Joists
- Compute iJoists for larger floors
- Compute the Number of 4x8 Sheets to cover the Deck or Floor
- Compute the number of Decking Boards to cover the deck or floor
Roofing Geometry Calculators