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`"Roof "_"Sheathing" = "roundup"(("Roof Area" ft^2)/(32 ft^2)) `

Enter a value for all fields

The **4x8 Sheathing for a Gable Roof **calculator computes the total surface area of a roof, the number of 4x8s and framing nails needed for a gabled roof based on the length, span, pitch and overhang.

**INSTRUCTIONS:** Choose units and enter the following:

**(L)**Ridge Length (Includes overhang)**(S)**Span of Roof.**(oH)**Overhang**(P)**Pitch of Roof

**4x8s for Roof Area (n):** The calculator returns the following:

- surface area of the roof in square feet and the following:
- number of 4x8 sheets to cover roof area
- number of framing nails (note this assumes using clips between 4x8s and not blocking)

The length, span, pitch and overhand determine the surface area of a roof. Based on that, one can roughly calculate the number of 4x8s by dividing by 32 ft^{2}.

The nails for fixing a 4x8 to roof trusses or rafters is based on edge and field spacing of the nails (see below). Clips (c) are used between the boards. This algorithm assumes an edge spacing of 6 inches, and a field spacing of 8 inches.

- Gabled Roof
- Hip Roof
- Shed Roof
- Dormers

- Total Building Materials Calculator
- Roofing Calculators
- Metal for a Roof - Calculates the number of metal panels for a roof.
- Area of a Roof - Computes the area of a roof based on the pitch and the dimensions of the area covered by the roof. It also returns the number of 4x8 sheets to cover the roof, the number of standard bundles of shingles to cover, and the number of roofing nails for both normal and high wind environments.
- Pitch of a Roof - Computes angle of incline in the roof in both degrees and rise over 12" run (e.g. 26.6
^{o}: 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.
- Shingles needed for a roof - Calculates the number of standard bundles (33.3 ft
^{2}) of shingles for 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.

- Framing Calculators
- Floor Construction Calculators