Gable Roof Metal (Standing Seam)

The Standing Seam Metal for a Gable Roof calculator estimates the materials needed for a metal roof for a simple gabled roof based on the roof dimensions.

INSTRUCTIONS: Choose units and enter the following:

• (L) Ridge Length
• (S) Roof Span
• (P) Roof Pitch
• (oH) Overhang 
• (R) Rake of Roof Overhang
• (PD) PANELS or DETAILS

Standing Seam Metal for a Roof (RM): The calculator returns the number and length of 15" wide panels.  If "DETAILS" are chosen, the calculator returns the following:

1. Ridge Cap: length of the ridge cap.
2. Gable Trim: total length of gable trim, equals four times a gable length
3. Metal Panels:  number and length of 15" standing seam metal panels for the roof. 
4. Metal Screws: number of screws needed to attach standing seam panels based on 0.66 screws per liner foot.
5. Snow Guard: total length of snow guard, equals twice the ridge length.
6. Angle Trim: total length of angle trim (used as facia).
7. Purlins: number and length of rows of purlins for the roof
8. Area: area of the roof in square feet.

The Math / Science

The Standing Seam Metal for a Roof calculator is meant to help with material estimates for a standing seam metal roof with panels 15" wide.  In all cases, confirm your estimates with a professional estimate and adhering to local building codes.

The calculator uses the ridge length, pitch and roof span to compute the roof area.  Note: under the ridge cap, you will need foam closure which keeps rain from being driven up under the ridge cap.  The length of the foam closure that you'll need is four times the ridge length, two for either side of the ridge, and two for the bottoms above the angle trim. 

A spacing of twenty four inches (24") between rows of purlins is used to compute the number and length of purlins.  To compute the length and number of purlins using a different spacing, use the Purlins for a Roof Calculator (CLICK HERE).

Roof Calculators

• Gabled Roof
  • Area of Gable Roof
  • 4x8 Sheathing for Gable Roof
  • Cost of Sheathing for Gable Roof
  • Purlins for a Gable Roof
  • Metal for a Gable Roof
  • Shingles for a Gable Roof
  • Cost of Shingles for a Gable Roof
  • Nails for Gable Roof Sheathing
  • Roofing Nails for a Gable Roof
• Hip Roof
  • Surface Area of a Hip Roof
  • Purlins for a Hip Roof
  • Metal for a Hip Roof
  • Shingles for a Hip Roof
• Shed Roof
  • Trusses for a Shed Roof
  • 4x8s for a Shed Roof
  • Shingles for a Shed Roof
  • Cost of Shingles for Shed Roof
  • Purlins for a Shed Roof
  • Metal for a Shed Roof
  • Metal for a Shed (Roof and Walls)
• Dormers
  • Metal for Dormers
  • 4x8s for Dormers
  • Shingles for Dormers
  • Purlins for 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. 26.6^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.
• 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

• Pitch to Slope
• Pitch to Angle
• Rise over Run to Angle
• Interface Angle
• Interface Angle from Rise over Run