Replacing a shingle roof
From measuring the roof to checking the quotes.
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Roofing calculators for homeowners
Measure your roof, check the pitch and estimate materials before you talk to a roofer. Everything runs in your browser and nothing you enter is stored.
ft
ft
in
in
Measure the vertical rise over 12 in of horizontal run with a level and a tape.
sq ft
%
Three bundles to the square. Use 15% waste for hips and valleys.
Roof area
1,365sq ft
Roofing squares13.6
Pitch5/12
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Roof Area Calculator
Turn a building footprint and a roof pitch into the actual roof area, in square feet and in roofing squares.
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Roof Pitch Calculator
Convert between rise over run, degrees and slope percentage, and see what the pitch means for materials and access.
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Shingle Bundle Calculator
Work out bundles, starter strip, hip and ridge cap, underlayment, drip edge and nails from your roof area.
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Metal Roofing Calculator
Panels, panel length, fasteners and ridge cap for a metal roof, from the eave length, slope length and panel coverage.
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Roof Replacement Cost Estimator
Your local prices multiplied by your roof: roofing, tear-off, deck repairs, extras and contingency.
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Gutter and Downspout Calculator
Gutter sections, downspouts, elbows, hangers and end caps from the length of your eaves.
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Rafter Length Calculator
Work out the length of a common rafter from the building span, roof pitch and overhang, plus the rise to the ridge.
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Roofing Quote Comparison Calculator
Turn up to three roofing quotes into a price per square so you can compare them like for like.
Start with a plan
Switching to a metal roof
Panels, the change in weight, and whether it pays over time.
Fixing a hot or damp attic
Air in at the soffits, out at the ridge, and insulation in between.
After a storm
Safety and evidence first, then the claim and the repair.
Building a shed or carport roof
Pitch, framing and the sheets that go on top.
Why RoofingWala
Roofing information, not a sales pitch
We publish for the person who owns the roof, not for the person selling one.
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No sales pressure
We do not sell roofing, book jobs, or take contractor referral fees.
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Written for homeowners
Plain language first, with technical terms explained at the point they matter.
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Safety stated plainly
We say when a job needs a professional, and we mean it.
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Sources, not guesses
Manufacturer documentation, building codes and industry bodies, with regional variation flagged.
From the blog
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