What drives the price of a new roof?
The two biggest factors in any roof replacement are the material you choose and the size of your roof. Labor and materials are both priced per square foot of roof area, and the time the installation takes does not enter into it. If you ranked every factor that affects cost, the choice between metal and asphalt would come first and the overall size of the roof would come second. Everything else has a much smaller impact on the final number.
To give you a sense of scale, moving from standard architectural shingles up to a premium line adds only a few hundred dollars on most homes. Add another 200 square feet of roof area, though, and the price can go up $1,000 or more. Stories, pitch, skylights, and chimney flashing all play a part, but the baseline for your estimate comes from material choice and roof size.
Why is my roof bigger than my home?
Your roof is measured in square feet just like your home, but the two numbers will never match. The listed square footage of a home leaves out the overhangs past the exterior walls, the covered porches, the garage, and any unfinished space that still sits under the roofline. All of that has to be roofed, so we add it back in when we calculate roof size.
On top of that, we add a slope factor, since a steeper roof has more surface area than the footprint it covers. Then there is a waste factor, because cutting shingles or metal panels to fit around valleys, hips, and edges is a normal part of every installation. After overhangs, slope, and waste are counted, most roofs come out 15 to 25 percent larger than the home's listed square footage.
What does "squares" mean in roofing?
A "square" is the industry-standard unit for 100 square feet of roof area, so a roof that measures 2,500 square feet is a 25-square roof to a contractor. Everyone in the roofing industry uses it because it gives them a quick, consistent way to talk about roof size, estimate materials, and compare jobs without working in large numbers. You will see it on most roofing proposals and material orders.
Why didn't the calculator ask about shingle brands or product lines?
Most roof replacements in North Carolina, by a wide margin, use architectural asphalt shingles. There are five major manufacturers in the market, and we sell products from several of them. Each one has an entry-level line made for new construction and apartments and a standard line that covers almost every residential replacement. Then there is a premium line, which costs roughly 10 percent more for upgraded looks and slightly better performance.
The calculator's prices are based on standard architectural shingles like GAF Timberline HDZ, CertainTeed Landmark, and Owens Corning Duration. Those get installed more than any other products and are the best fit for most homeowners. In parts of Central North Carolina where three-tab shingles are still common, like the Fayetteville area, actual prices tend to run about 10 to 15 percent below what the calculator shows.
Why does the calculator show a price range instead of an exact number?
The layout and design of your home make a big difference in the final cost of a roof replacement. At an on-site inspection we measure the overall roof area, and we also count every eave, rake, valley, hip, ridge, and penetration one by one. With those measurements we can accurately price the underlayment, ice and water shield, step flashing lengths, drip edge, and every other material that goes into the job.
When we hand you an actual written estimate, we have already built a full material list for your roof and know exactly what labor and materials the job needs. A basic online calculator cannot get into that much detail, so it shows a range. That gives you a realistic expectation and does not promise a precision you can only get from real measurements.
Why does the calculator price skylights as full replacements?
During a roof replacement, we recommend replacing the skylights instead of just reflashing them. Unless your existing skylights are close to new, reflashing alone usually is not the best long-term result for the homeowner. Most skylights do not last 30 years or more, so if your roof has reached the end of its lifespan, your skylights are very likely near the end of theirs too.
Skylight repairs on their own also cost a lot. It is not uncommon for one skylight repair in North Carolina to cost over $2,500 as a standalone job. Replacing skylights while the roof is already open costs less overall, and the crew can properly flash and integrate the new units from the start, so there is less chance of future leaks.
Why do you offer financing for roof replacements?
Most homeowners are not planning on a new roof until they find a leak or their inspector flags a problem. We know it is a big expense that often comes out of nowhere, and we want to make it as accessible as we can. We do not earn money from our financing programs. They cost us money to run, and we make less on a financed job than on one paid in full. We offer financing because it helps our customers go ahead with a roof they need.
A lot of our customers use financing now. There is a 12-month option for homeowners who want to pay the balance off quickly and a 120-month option for those who need a lower monthly payment, both through Service Finance Company. You can get pre-qualified before your on-site inspection, so you will know your monthly payment before you decide anything.
How accurate is this online pricing calculator?
We built this calculator in-house from real pricing data on jobs we have completed in the Triangle area of North Carolina. Before we put it online, we checked its output against recently completed projects to make sure its estimates match what homeowners are actually paying. For most homes in the Raleigh, Durham, and surrounding areas, it is quite accurate.
Roofing prices do change, though. Manufacturers raise material prices at different points in the year, fuel costs go up and down, and labor availability shifts with the market. We have done our best to keep the calculator current, but your actual price could be different depending on timing or on details about your home that a basic calculator cannot pick up. Use the calculator as a well-informed starting point, and count on the free on-site inspection for the real number.
