Flat Roof Calculator

Free Flat Roof Cost Estimator

Not sure how much a flat roof will cost? Use our free Flat Roof Cost Calculator to get a quick online estimate based on your roof size, material, and project type. Whether you’re replacing an old flat roof or planning a new install, this tool helps you budget smart—before you commit.

Flat Roof Cost Estimator

Each roof is unique! This tool helps estimate flat roofing costs. For a precise quote, contact Comanche Roofing today!

Home Square Footage

Enter the total square footage of your home's floor plan

Roofing Material

TPO Modified Bitumen PVC

Warranty Type

Standard Warranty Comanche Lifetime

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Please fill out all fields correctly before proceeding.

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How to Use Our Flat Roof Calculator

Getting an online estimate for your flat roof is fast and hassle-free! Follow these simple steps:

Enter Your Roof Dimensions – Input the length and width of your roof to calculate the total square footage.
Select Your Roofing Material – Choose from TPO, Modified Bitumen or PVC to match your budget and needs.
Choose Your Warranty– Opt for a standard warranty or upgrade to the Comanche Warranty for extended protection.
Get Your Instant Estimate – Instantly see your total estimated cost, calculated with current material and labor prices.

Try it now and get your free flat roof estimate in seconds!

Average Cost to Replace a Flat Roof in texas

The cost to replace a flat roof typically ranges from $9 to $10 per square foot, depending on the materials used and project scope. For more complex or custom installations, pricing can rise to $12 to $15 per square foot.

This price includes:

Removal of the existing roofing system
Installation of new insulation
Application of high-performance waterproof membranes
All necessary roof components and accessories
Labor by licensed Texas roofing professionals

Factors That Affect Pricing

Several variables can impact the total cost of your flat roof replacement:

Roof size and layout: Larger or more intricate roofs require more time and materials
Material choice: TPO, PVC, EPDM, and modified bitumen all vary in cost and performance
Insulation needs: The thickness and type of insulation can affect the final price
Accessibility: Multi-story buildings or roofs with limited access may require additional equipment or labor
Location: Prices may vary slightly based on regional labor and material costs

What are the Types of flat roofing materials?

Built-Up Roof (BUR): Durable and weather-resistant.
Modified Bitumen: Flexible, easy to install, and ideal for fluctuating temperatures.
EPDM: Cost-effective, durable, and UV-resistant.
TPO: Energy-efficient and heat-reflective.
PVC: Strong, chemical-resistant, and low-maintenance.
Green Roof: Eco-friendly and energy-efficient.
Foam Roof: Lightweight, seamless, and insulating.

Get a Free Flat Roofing Estimate

If you’re considering a flat roof replacement in Austin, Buda, Kyle, Round Rock, or the surrounding areas, let Comanche Roofing provide a detailed estimate tailored to your property and needs.

Call us today or request a quote online — no pressure, just honest pricing from a trusted local roofer in Austin.