Get three roofing quotes and you may see three very different numbers, even for the same house. That is not always a scam. A roof price is built from a dozen moving parts, and small differences in your roof and your area add up fast. Here is what actually drives the cost, roughly how much each factor moves the needle, and which ones stay hidden until the old roof comes off.
The starting point: size and material
Everything begins with size, because roofers price by the square, which is 100 square feet of roof. From there, the material sets the base rate, from basic asphalt up to metal and tile. We cover both in how much a new roof costs and how pricing works per square.
The factors that push the price up
On top of size and material, these are what separate a cheap quote from an expensive one:
- Pitch and complexity. A steep roof can add 25 to 50 percent to the labor, and every valley, dormer, skylight, and chimney means more cutting, flashing, and time.
- Tear-off. Removing the old roof and hauling it away typically adds 1,000 to 3,000 dollars, and stripping a second or third layer costs more.
- Hidden decking damage. If the wood under the shingles is rotted, it has to be replaced, often around 60 to 100 dollars per sheet. Nobody knows how much until the roof is open.
- Height and access. Multiple stories, a tight lot, or landscaping in the way all add labor.
- Permits and disposal. Permits commonly run 75 to 500 dollars, and the dumpster another 250 to 800.
- Your region and the season. Labor rates vary a lot by metro, and peak season and post-storm surges raise prices.
Labor is usually the biggest share
People assume the shingles are most of the bill. They are not. Labor is usually 40 to 50 percent of the total, and on labor-heavy materials like tile, or on a steep, complex roof, it can climb to 60 or 70 percent. That is why the shape and access of your roof matter as much as the material.
A Florida wrinkle: the code
In Florida, the building code can add cost that has nothing to do with your choices. Hurricane requirements mean a sealed secondary water barrier and specific fastening, and the state's 25 percent rule can turn a big repair into a full, to-code replacement. See Florida's 25 percent roof rule.