Flat roofs are popular for both commercial buildings and some modern residential designs. But like any roofing system, they don’t last forever. Whether you’re dealing with aging materials, frequent leaks, or structural issues, a flat roof replacement may be the best long-term solution.
Understanding the Cost of Flat Roof Replacement
The cost of flat roof replacement varies depending on the material, size of the roof, and complexity of the job. Here’s a general overview:
| Roofing Material | Average Cost (per sq. foot) | Lifespan |
| Felt Roof Installation | $3.50 to $6.50 | 10 – 15 years |
| Rolled Roofing | $1.50 to $3.00 | 5 – 10 years |
| Flat Roof Shingle | $4.00 to $7.00 | 15 – 25 years |
| Metal Roofing for Flat Roofs | $7.00 to $12.00 | 30 – 50 years |
| EPDM Rubber Membrane | $4.50 to $8.00 | 25 – 30 years |
The cost of flat roof replacement for commercial buildings can be significantly higher due to larger surface areas and additional structural requirements. On average, the commercial roof replacement cost can range from $5 to $12 per square foot.
Common Flat Roofing Materials
Each material has its pros and cons.
Felt Roof Installation
Budget friendly and relatively easy to install, but has a shorter lifespan.
Rolled Roofing
Very affordable, but it’s more prone to wear. The cost of rolled roofing is attractive, but you might be replacing it sooner than you’d like.
Flat Roof Shingle / Flat Roof with Shingles
A newer trend using specially designed shingles that offer a more traditional appearance on a flat or pitched flat roof.
Metal Roofing for Flat Roofs
Highly durable and long-lasting, though the upfront cost is higher.
How to Repair a Flat Roof vs. Replacing It
Wondering how to repair a flat roof instead of replacing it? Minor things like small cracks or punctures can be addressed with patching, sealant, or a membrane overlay. However, if ~25% or more of the surface is compromised, a full replacement is the better investment.
Flat Roof Repair Materials
| Repair Material | Use Case |
| Roofing Sealant | Small cracks, leaks |
| Rubber Membrane Patches | Punctures in EPDM or similar surfaces |
| Roofing Cement | Flashing and seam reinforcement |
| Modified Bitumen Sheets | Layering over larger damaged areas |
While repairs can extend the life of your flat roof temporarily, they can also add up in cost and stress. A professional assessment from Titan Roofing & Construction can help determine the right solution.
Considerations for Commercial Roofing
Commercial roofing often requires stricter codes and higher grade materials to accommodate HVAC units, foot traffic, and insulation. A licensed commercial roofer who really knows their stuff should always handle these projects.
Why Choose Titan Roofing & Construction for Your Next Project
Titan Roofing & Construction brings years of experience, certified craftsmanship, and premium materials to every flat roof replacement project we take on. We provide tailored solutions for residential pitched flat roof or a large scale commercial roofing jobs, all to meet your needs and budget.
Contact us today for a free inspection and quote. Let’s make sure your roof is built to last!
