What Actually Drives Roof Replacement Cost

Two roofs the same size can cost very differently. Here's what really moves the number.

Roof size is the starting point

Total square footage is the baseline cost driver, since materials and labor both scale with area.

Material choice has a big impact

Asphalt shingle is typically the most affordable option; metal, tile, and slate cost significantly more upfront but often last much longer.

Pitch and complexity matter more than people expect

A steep or complex roof with multiple valleys and angles takes longer to work on safely, which raises labor cost even at the same square footage.

Tear-off and disposal aren't always included

Removing and disposing of an old roof is real, sometimes significant cost — confirm it's included in any quote you compare.

Decking repairs can add unexpected cost

If the roof deck underneath has rot or damage once the old roofing is removed, that repair is usually billed separately — ask how a contractor handles this scenario before signing.