Roof Replacement Cost: What Drives the Price and How to Compare Quotes
A new roof is one of the largest maintenance costs a homeowner faces. Prices vary a lot between houses, so understanding how roofers calculate a quote is the best way to know whether yours is fair.
How roofers price a job
Roofers measure in squares. One square is 100 square feet of roof surface. A roof's area is larger than the house's floor area because of the pitch and overhangs. The quote is roughly: number of squares × price per square for materials and labor, plus tear-off, disposal, and extras such as flashing and ventilation.
Biggest cost factors
- Material. Asphalt shingles are the most affordable and most common. Metal, tile and slate cost more upfront but last longer.
- Roof size and pitch. Steep roofs need more safety equipment and labor.
- Complexity. Valleys, dormers, skylights and chimneys all need extra flashing and time.
- Tear-off. Removing one or more old layers adds labor and dumpster costs.
- Decking repairs. Rotten plywood under the shingles is only found after tear-off. Good quotes state a price per sheet for replacement.
- Location and season. Labor rates and permit fees vary by area, and demand spikes after storms.
Material comparison
| Material | Relative cost | Typical lifespan | Notes |
|---|---|---|---|
| 3-tab asphalt shingles | Lowest | About 15–20 years | Being replaced by architectural shingles in many markets. |
| Architectural asphalt shingles | Low to medium | About 20–30 years | Most common choice for replacements. |
| Metal (standing seam) | High | 40+ years | Light, sheds snow, good for fire-prone areas. |
| Clay or concrete tile | High | 50+ years | Heavy; the structure must support it. |
| Slate | Highest | 75+ years | Needs specialist installers. |
Repair or replace?
A repair often makes sense for a few missing shingles or a single leak on a roof in otherwise good condition. Consider replacement when the roof is near the end of its expected life, shingles are curling or losing granules across large areas, you see daylight or sagging in the attic, or leaks keep returning in different places.
Will insurance pay?
Homeowners insurance usually covers sudden damage, such as from a storm or falling tree, but not wear and tear from age. Many policies pay less for older roofs. If you have storm damage, document it with photos, contact your insurer before signing a contract, and be cautious of contractors who offer to "cover your deductible", which is illegal in some states.
How to compare roofing quotes
- Get three written quotes based on an on-roof or drone inspection, not just a satellite measurement.
- Compare like for like: same material line, underlayment, ice and water shield, ventilation and flashing replacement.
- Check the warranties: the manufacturer's material warranty and the roofer's workmanship warranty are separate.
- Confirm license, insurance and permits where required.
- Agree the decking replacement price per sheet before work starts.
- Avoid large upfront payments. Pay a reasonable deposit and the balance after final inspection.
The bottom line
Roof prices depend on size, pitch, complexity and material more than anything else. Get several detailed, comparable quotes, check the warranties, and choose the roofer you trust to do the hidden details right.