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How Much Does Flat Roof Installation Cost?


The cost of flat roof installation is typically between $137.67 to $226.08 per 100 square feet. This covers the cost of installing an asphalt roll flat roof, but not the removal of your existing roof.
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Estimated Flat Roof Installation Prices (Asphalt Roll)
Asheville, NC$131.43 - $217.36 per 100 sq. ft.
Boston, MA$172.25 - $284.88 per 100 sq. ft.
Fairbanks, AK$178.62 - $295.41 per 100 sq. ft.
Fresno, CA$152.49 - $252.20 per 100 sq. ft.
Houston, TX$119.86 - $198.23 per 100 sq. ft.
Indianapolis, IN$113.36 - $187.48 per 100 sq. ft.
Knoxville, TN$116.22 - $192.21 per 100 sq. ft.
Little Rock, AR$125.45 - $207.47 per 100 sq. ft.
Missoula, MT$129.22 - $213.71 per 100 sq. ft.
Tallahassee, FL$123.50 - $204.25 per 100 sq. ft.
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7 Things that Impact the Price of Flat Roof Installation

1. Location Prices will vary based on the geographic location of your home. If you don't see your city listed above, you can use our free matching service to get flat roof estimates in your area.

2. Flat roofing material. There are several material options available for flat roofs including built-up roof (also known as tar and gravel), modified bitumen, and single-ply membranes (including neoprene, EPDM, PVC, and others). There will be slight variations in price among the various materials, though the single-ply membranes are typically the most expensive option.

3. Removal of existing roof. Most flat roofs allow only one or two layers of material at most. If the existing layers need to be removed, the overall cost of your project will increase.

4. Contractor specialization. A standard roofing contractor may not be familiar with the installation process. You may need to pay more to find a contractor in your area who can properly install a flat roof.

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5. Longevity. Though built-up roofs and modified bitumen cost less to install upfront, they may not last as long as traditional pitched roofs. Their average lifespan is between 10 and 20 years. This means in addition to regular maintenance and inspection costs unique to flat roofs, you may need to pay to replace your roof more often.

6. Permits. If your goal is to turn your roof into a usable space, like a garden or rooftop patio, your local authority may require you to apply for special building permits.

7. Season. Contractors may be willing to offer discounts during their offseason, usually late fall and early winter.

RELATED
- What are the Pros and Cons of Installing a Flat Roof?
- Types of Roofing
- Do I need a permit to install a new roof?

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Related Topics

Roof Installation
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Metal Roof Installation
Slate Roof Installation
Flat Roof Installation
Roof Inspection
Roof Sealant Application
Roof Cleaning


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