How Much Does Roof Replacement Cost?
Roof cost depends on size, pitch, material, and how many layers are already there. Here is what to compare in a bid.
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- Main drivers
- Size, pitch, material
- Also matters
- Layers to remove
- Compare
- Itemized quotes
Roof replacement cost depends on the size and pitch of the roof, the material you choose, how many old layers must be removed, the condition of the decking, and local labor rates. There is no single number, so compare itemized quotes.
What is included in the cost
- Tearing off and disposing of the old roofing.
- Underlayment, flashing, drip edge, and ventilation.
- The roofing material itself, such as asphalt shingles or metal.
- Labor and any required permits.
- Replacing damaged decking if found.
What raises the cost
- A steep pitch, which is slower and more dangerous to work on.
- Multiple layers of old roofing that must be removed.
- A complex roof with valleys, dormers, and many penetrations.
- Rot or damage to the decking under the old roof.
- Premium or long-lasting materials.
You can estimate the quantity of shingles yourself with the roofing material calculator, but have a professional confirm the scope.
Roof work is dangerous
Do not attempt to inspect or repair a roof unless you have proper fall protection and experience. Use a licensed roofing professional for inspections and work at height.
Repair or replace?
A small, isolated problem can often be repaired. Widespread wear, age, or repeated leaks point toward replacement. See roof repair vs replacement.
Sources and assumptions
This guide explains cost structure rather than publishing dollar amounts, because roof prices depend heavily on region, material, and roof condition.
Frequently asked questions
- How is a roof replacement priced?
- Roofing is often priced by the square, where one square equals 100 square feet of roof area. The price per square includes materials and labor, with adjustments for pitch, layers, decking, and complexity.
- Is it cheaper to roof over an existing roof?
- Adding a new layer over an old one can cost less upfront, but it may not be allowed if there are already multiple layers, can hide decking damage, and can shorten the new roof's life. Discuss the trade-offs with a roofer.
- How long does a roof replacement take?
- Many single-family roofs take a few days, depending on size, material, weather, and whether decking must be replaced. Your contractor can give a schedule for your home.