đŠ Metal Roofing Calculator
Calculate metal roofing panels, ridge caps, and screws needed. Supports common panel widths with overlap and cost estimates.
How to Use This Calculator
Enter your total roof area. Select the panel width â standing seam panels are typically 12-16 inches, corrugated panels are 24-36 inches. Set the overlap (standing seam uses minimal overlap, corrugated uses 1-2 inches). Enter your ridge and valley lengths for trim calculations.
Understanding Your Results
Panel count includes a 5% waste factor for cuts. Ridge and valley caps are sold in 10-foot sections. Screw estimates are based on standard fastener patterns â standing seam systems use fewer visible screws. Cost ranges vary significantly between corrugated and standing seam systems.
Frequently Asked Questions
How many metal roofing panels do I need?
Divide your roof area by the coverage width of each panel (panel width minus overlap). Then divide by the panel length to get the number of panels. Add 5-10% for waste and cuts.
How many screws per metal roofing panel?
Typically 60-80 screws per roofing square (100 sq ft). Exposed fastener panels use more screws than standing seam panels, which use hidden clips.
What is the overlap for metal roofing?
Side overlap is typically 1-2 inches for corrugated panels and 1 rib width for standing seam. End overlap (if panels don't cover full length) is usually 6-12 inches.