What is the price difference between a metal roof and shingles?+
A standard architectural shingle roof typically costs $350 to $500 per square installed. A metal roof (such as corrugated steel or standing seam) can range from $700 to $1,200+ per square installed, making metal roughly twice as expensive as shingles upfront. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout.
Is a steel roof more expensive than shingles?+
Yes, heavy-gauge steel roofs—whether stone-coated steel or painted Galvalume—will cost significantly more than asphalt shingles upfront. However, steel lasts up to 50 years, which often makes it cheaper over its lifetime. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with.
How does the cost of an aluminum roof compare to shingles?+
Aluminum is a premium, rust-proof metal often used in coastal environments. Because it is a specialty material, an aluminum roof can easily cost three to four times more than standard asphalt shingles. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned.
Are tin roofs cheaper than asphalt shingles?+
Modern 'tin' roofs are usually terne-coated steel or galvanized corrugated panels. While basic corrugated panels are one of the cheapest metal options available, the specialized labor and fastener requirements still make a installed 'tin' roof more expensive than basic 3-tab shingles. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout.
Can I install a metal roof over existing shingles to save money?+
Yes, many building codes allow a lightweight metal roof to be installed directly over one layer of existing shingles, saving $100-$150 per square in tear-off and disposal costs. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions.
Should I calculate by panel width or effective coverage?+
Always use effective coverage after sidelap, not raw panel width. Raw width math commonly underestimates quantity and leads to shortages. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions and reduces costly quantity revisions.
Do overlap rules change between roof and wall applications?+
Yes. Corrugated roof overlap is often greater than wall overlap for better water control. Use profile-specific installation guidance. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions and reduces costly quantity revisions.
How much waste should I carry for metal panel jobs?+
Simple layouts often use lower waste allowances, while cut-heavy roofs or mixed lengths need more. Add contingency for trims, end laps, and field errors. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions and reduces costly quantity.
Do I need separate counts for screws and trims?+
Yes. Panel count alone is incomplete. Fastener pattern, ridge/eave details, closures, and trims should be quantified separately. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions and reduces costly quantity revisions.
Can I use one panel length for every roof section?+
Only on very uniform geometry. Most roofs need section-based lengths due to pitch transitions, overhang changes, and end-lap constraints. For better estimating accuracy, cross-check panel coverage, sidelap, and waste factor with your project notes, then confirm fastener layout before final ordering. This keeps your supplier takeoff aligned with real site conditions and reduces costly quantity revisions.