The Cost of Shingles on Shed Roof calculator computes the cost estimate for shingles to cover a shed roof based on the roof dimensions and a unit price of a bundle of shingles.
INSTRUCTIONS: Choose units and enter the following;
- (L) Ridge Length of Roof
- (S) Span of Roof
- (P) Pitch of Roof
- (oH) Overhang of Roof
- (uP) Unit price of a bundle (see Unit Price below)
- (BS) Bundle Size
- 33.33 ft2 for normal 3-tab shingles and 32.8 ft2 for architectural shingles are common.
Cost of Shingles on a Shed Roof (TC): The calculator returns the cost of shingles for the roof in U.S. dollars. However, this can be automatically converted into other currency units via the pull-down menu.
The Math / Science
The roofing shingle cost equation provides an estimate of materials cost for shingles on a roof based on the roof's area and on the price of shingles. To calculate the area, the user enters the length and width dimensions of the area covered (see diagram) and the pitch. vCalc uses these dimensions to calculate the are covered. Note: vCalc provides automatic conversions of the input lengths into numerous units. Any unit price must be for 33.33 ft2 of shingles which is a standard bundle.
This is only an estimate, and may vary based on the price of shingles that you purchase. Furthermore, it does not include the cost of ridge shingles, under cover (tar paper or felt), or other materials such as flashing, nails and glues.
Unit Price
One should always use the local pricing of materials available. However, for convenience, a periodic survey of materials is made. The price points for 33.33 ft² bundles are as follows:
- Shingle price survey date: 12/22/22
- Shingle price survey source: Lowes
- Cost of economy shingles: $36.0 USD
- Cost of low cost shingles: $37.98 USD
- Cost of mid-range shingles: $43.32 USD
- Cost of high-grade shingles: $52.34 USD
- Cost of premium shingles: $90.0 USD
The pricing data is gathered periodically from nationally advertised prices on the websites of DIY providers such as (Lowes and Home Depot). The data is saved in a vCalc data repository (table).
A Shed Roof is a roof with a single slope. Shed Roofs are used in simple agriculture buildings and state of the art modern buildings. A Shed Roof can be made with trusses or rafters and can be covered will various waterproof materials including shingles, metal panels and tile. 
Shed Roof Calculator Functions
- Metal Panels for Shed Roof: This computes the total number of metal panels and lengths of trim needed to cover a single sloped roof based on the span, pitch, ridge length and the front and back overhangs.
- Shingles Needed for Shed Roof: This computes the total number of 33.3 ft2 bundles of shingles needed to cover a single sloped roof (shed roof) based on the span, ridge length and the front and back overhangs.
- Cost of Shingles for Shed Roof: This computes the cost estimate for shingles to cover a shed roof based on the roof dimensions and a unit price of a bundle of shingles.
- Underlayment for Shed Roof: This computes the surface area of a shed roof and the cost estimate for underlayment based on the roof dimensions and a unit price of underlayment.
- 4x8 Sheathing for Shed Roof: This computes the total number of 4x8s needed to cover a single sloped roof based on the span, pitch, ridge length and the front and back overhangs.
- Purlins for Shed Roof: This computes the total number and length of purlins for a single sloped roof based on the span, pitch, ridge length and the front and back overhangs.
- Trusses for Shed Roof: This computes the total number and length of trusses for a single sloped roof based on the span, pitch, ridge length and the front and back overhangs.
- Metal for Shed (Roof and Walls): This computes the total number and length of metal panels for the roof and walls based on the ridge length of the roof, the front and back heights, the width (span) of the building and the front and back overhangs.
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