The Cost of Metal Panels for a Gable Roof calculator estimates the cost for metal panels on a simple gabled roof based on the roof dimensions and the cost per linear foot of metal panels.
INSTRUCTIONS: Choose units and enter the following:
- (L) Ridge Length (include rake)
- (S) Roof Span
- (P) Roof Pitch
- (oH) Overhang
- (uP) Unit Price of Metal Panel per Linear Foot
- (PD) PANELS or DETAILS
Cost of Metal for a Roof (MC): The calculator returns the number and length of panels and the total cost of metal panels in U.S. dollars. If "DETAILS" are chosen, the calculator returns the following:
- Ridge Cap: length of the ridge cap.
- Gable Trim: total length of gable trim, equals four times a gable length
- Metal Panels: number and length of metal panels for the roof.
- Metal Screws: number of screws needed to attach panels to roof.
- Snow Guard: total length of snow guard, equals twice the ridge length.
- Angle Trim: total length of angle trim (used as facia).
- Purlins: number and length of rows of purlins for the roof
- Area: area of the roof in square feet.
The Math / Science
The Metal for a Roof calculator is meant to help with material estimates for a metal roof. 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. The most common width of both G-Rib and R-Rib metal panels is 36". This is the default in this calculator. 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).
Metal Roof Pricing
The C-Lok, Ag Panel, G-Rib price survey includes the following for the most recent pricing surveyed:
- Date Survey: 3/7/24
- Source of Pricing Source: CN Metals
- Cost per Unit:
- [$3.19 USD/ft] - Panel (36" wide) - dollars per linear foot
- [$0.09 USD/screw] - Screws (with seal gasket) - dollars per screw
- [$1.74 USD/ft] - Ridge Cap - dollars per linear foot
- [$1.84 USD/ft] - Outside Corner (trim) - dollars per linear foot
- [$1.25 USD/ft] - Snow Rail - dollars per linear foot
- [$2.85 USD/ft] - Drip Edge - dollars per linear foot
- [$0.2 USD/ft²] - Fanfold Insulation - dollars per square foot
Pricing Source(s)
- CN Metals (https://www.cnmetalsllc.com/) C-Lok is their product name for Ag Panels.
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- 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
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- Number of Studs in a Wall
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- Cubic Feet in a Room (volume)
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- 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
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