How many metal roof panels do I need?
For a simple gable roof with two sides. Panels run from the eave up to the ridge.
Panels to buy
30 panels
Estimated material cost
Panels to buy
30 x $$40.00 per panel
$1,200
Roofing screws
896 x $$0.12 per screw
$108
Ridge cap
40 x $$5.00 per linear ft
$200
Typical store prices before tax and delivery. Change any price to match your store.
How to measure
Measure the length of the eave and the distance from the eave to the ridge along the roof. Check the panel coverage width listed by the supplier.
Tips from the field
- Adds one extra panel per side for overlap. Order panels cut to length from the supplier.
- Panel length includes 2 inches of overhang past the drip edge.
What you'll need
Common questions
How long should metal roof panels be?
Eave to ridge plus about 2 inches of overhang past the drip edge. Suppliers cut panels to length.
How many screws per square of metal roofing?
Roughly 80 screws per 100 square feet, depending on purlin spacing.
Can metal roofing go over shingles?
Often yes, with furring strips or underlayment, but check local code and how many layers are already on the roof.
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Printed from housecalcs.com/tools/metal-roofing-calculator