`"Purlins" = "Screws for Metal Shed Roof"`

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The Screws for Metal Shed Roof calculator computes the total number of metal panels screws needed for attach metal panels on a single sloped roof based on the span, ridge length and the front and back overhangs.

INSTRUCTIONS: Choose units and enter the following:

• (L) Ridge Length (include rakes)
• (S) Span
• (P) Pitch (choose: flat, 2/12, 4/12, 6/12, 8/12, 10/12, 12/12, 14/12)
• (oH) Overhang (default: 12")

Metal Panel Screws for Shed Roof (nS): The calculator returns the number of metal panel screws and the total surface are in square feet.

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Metal Panel Screws are a specialized product that include a gasket to seal around the screw head and prevent moisture from penetrating the roof or siding through the screw hole, and a screw tip that cuts through the metal panels and is self-starting.  Metal panel screws often come in painted colors to match the metal panels.  The screws are used to attach metal panels to purlins or sheathing for a metal roof or to girts or sheathing for metal siding. Metal Panel Screws are typically used with a density of 75 screws per 100 square feet of metal roofing or siding area.

Metal Panel Screw Information

• 75 screws per 100 ft² of roof surface area is the industry standard for screws in a metal roof.
• Common Screw Packaging Sizes: 1lb, 5lb, 20lb, 25lb, 30lb
• Common Metal Panel Screw Weights and Density
  • #10 x 1" - 115 per pound
  • #10 x 1¹/₂" - 95 per pound
  • #10 x 2" - 75 per pound
  • #10 x 21/2" - 65 per pound

The current price of Screws for a Metal Roof is included in the C-Lok, Ag Panel, G-Rib price survey which includes the following:

Cost of Metal Screws (periodic survey)

• $0.09 USD/screw - Screws (with seal gasket) - dollars per screw 
  • Date Survey: 3/7/24
  • Source of Pricing: CN Metals

Metal Panel Screws Calculator provides functions to compute the number of metal panel screws needed for a job based on the shape and dimensions of the roof or wall in metal panels as follows:  

• Screws for a Gabled Metal Roof 
• Screws for a Metal Hip Roof
• Screws for a Metal Gambrel Roof
• Screws for a Metal Shed Roof
• Screws for a Metal Dormer
• Screws for Metal Shed or Run-in
• Screws for Metal Siding on a Gable End
• Screws for Metal Siding on a Gable End with Door
• Screws for Metal Siding Rectangular Wall
• Screws for Metal Siding Gambrel End Wall

The Math / Science

A Shed Roof is a roof with a single slope (see picture).  Shed Roofs are used in simple agriculture buildings and state of the art modern buildings.  The Metal Panels for a Shed Roof calculator is meant to help with material estimates for a roof.  The rafter length uses the pitch (rise over run) and the span, which is the width plus the two overhangs (front and back).  

The number of screws are based on 75 per every 100 ft² of area covered by metal panels.

In all cases, confirm your estimates with a professional estimate and adhering to local building codes.

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
  • Cost of 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

Roofing Geometry Calculators

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

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