Flat Roofs

Flat Roofing Done Right – Residential and Commercial

Flat Roofing Contractor in St. Louis, MO

At American Roofing & Exteriors, our team is passionate about providing cost-effective, high-quality flat roof services that meet the unique needs of each homeowner and business we serve around St Louis.

Working daily in this industry since 1994, our seasoned crew has the expertise to install any type of flat roof properly.

We know that customer satisfaction and integrity are essential to continued success, and we strive to exceed expectations every step of the way.

Whether you need a flat roof installation, repair, restoration, or overlay service, you can trust us to do the job efficiently and effectively.

For Peace of Mind

We take accreditations seriously through extensive training and certifications.

Owens Corning - Platinum Preferred Contractor
Platinum Preferred Contractor
Matt Woods - Genflex Roofing Systems  Certifed Roofing Contractor
Certified Roofing Contractor
EPA - Approved Contractor
Approved Contractor
BBB - Rating A+ Since 12-05-2018
A+ Rating Since 06-30-2008

What Clients Say

Don’t Just Take Our Word For It

Why Hire Us Over Other Flat Roofers in St. Louis?

Our reputation in the industry is rock-solid, reinforced by a BBB A+ Rating. We are committed to transparency and honesty and will never try to sell you something you don’t need. We take pride in being a family-owned business that has served the St. Louis community for nearly three decades.

Our team of experts has the knowledge and experience to tackle any flat roofing project, whether big or small. Our project managers are involved throughout the process and are always available to answer any questions.

Request a free quote.

Your peace of mind is our Priority.

We offer complete insurance and bonding, providing additional protection and ensuring your job site is comprehensively covered. This is part of our commitment to delivering a worry-free roofing experience.

We’re Here When It Matters Most.

Our 24-Hour Emergency Repair Service is always ready to protect your roof during critical moments. You can trust our availability and swift response to safeguard your property, no matter the hour.

Your Satisfaction is Guaranteed.

We back our work with a 5-year written workmanship warranty. Our installations are meticulous, adhering strictly to the manufacturer’s specs. This precision ensures you receive the full warranty benefits.

Flat Roofing Services
Custom Solutions Built to Last

Partner with our outstanding team to get things done.  Our comprehensive, flat roofing services are tailored to your precise needs and budget. From TPO to Built-Up Roofing systems, we leverage the latest materials and techniques to maximize the performance and longevity of our roof installations and replacements. Our crew of highly trained flat roofers in St. Louis have the know-how to service roofs of any size or complexity properly. We generally serve these clients:

  • Manufacturing Facilities
  • Office Buildings
  • Commercial Plazas
  • Retail Facilities
  • Schools
  • Multi-Family Units
  • Warehouses
  • Residential flat roofs

Flat Roof Installation & Replacements

Choosing the right flat roofing system that checks all the boxes for performance, durability, and budget can be challenging. Our team stays current on the latest materials and technologies, providing the best options.

We take the time to understand your goals, assess your structure, and transparently recommend high-quality flat roofing solutions that fit your needs and budget.

Experience flat roofing services elevated to a new level of customer care and workmanship. Discover why we are the top choice for commercial and residential flat roofing in St. Louis. Contact American today!

Newly installed Flat Roof On apartment Building
Flat Roof Being Repaired By Our Team

Flat Roofing Repairs

Addressing issues with your flat roof promptly is crucial in preventing further damage. Our team has the knowledge and experience to diagnose and repair any problems with your flat roof.

If your flat roof shows signs of wear and tear but is still structurally sound, restoration may be the best option. We go beyond a quick patch, providing full solutions with only premium materials selected specifically for compatibility and performance with your existing roof.

Contact us today for flat roof repair services and avoid small issues becoming significant problems.

  • Ponding water – Low spots or improper drainage can cause water to pool on the roof, leading to damage.
  • Leaks – Punctures, cracked seams, flashing failures, and aging can all cause leaks through the roof surface.
  • Blisters – Trapped moisture under the membrane can cause blisters to form that need patching.
  • Cracks – Temperature changes and roof movement over time can cause cracks to form.
  • Detachment – Sections of the roof membrane can detach due to lack of adhesion or fastener issues.
  • Damage – Impact from falling debris, foot traffic, weather events, etc. can physically damage the roof.
  • Drain problems – Clogged drains or poorly placed drains can lead to excess water accumulation.
  • Ventilation issues – Inadequate ventilation leads to moisture getting trapped in the roof system.
  • Deterioration – UV, chemical damage, weathering, and aging can cause general deterioration of roof components.

Flat Roof Overlays

If your flat roof is aging, but the decking remains sound, a roofing overlay is an innovative, money-saving option. Our certified technicians will thoroughly inspect your roof to determine if it is suitable for overlay.

We have the expertise to select optimal materials like TPO, PVC, or modified bitumen that properly adhere and protect. An overlay properly installed by our team can extend the life of your flat roof by up to 20 years, preventing the need for full replacement.

We offer durable overlay solutions for both commercial and residential buildings.

Installing Flat Roof Overlay

Types of Flat Roofing Material We Use

When it comes to materials, we are well-versed in all types of flat roofing products. Our experienced installation teams understand the unique characteristics of each material and how to get the most out of it.


Thermo-Plastic Olefin (TPO) is a popular flat roofing material that is both affordable and energy-efficient. TPO is a single-ply roofing membrane that is highly durable and resistant to tears, punctures, and impact. Our extensive experience in installing and repairing TPO flat roofs ensures the optimal performance of your roof.

Modified Bitumen

Modified Bitumen is a type of asphalt roofing designed for use on flat or low-sloping roofs. It comprises multiple asphalt and synthetic polymers layers, adding strength and durability. Modified bitumen is an excellent choice for commercial and industrial flat roofs.

Built-Up Roofs

Built-Up Roofs (BUR) is a traditional flat roofing material that is composed of multiple layers of roofing felt and asphalt. BUR is a cost-effective option for both commercial and residential flat roofs. We offer built-up roofs- with or without gravel.

EPDM Rubber Roofs

Ethylene Propylene Diene Monomer (EPDM) is a rubber roofing commonly used on flat roofs. EPDM is highly durable, weather-resistant, and long-lasting. It is an excellent choice for commercial and residential flat roofs. We offer EPDM Rubber roofs- with or without ballast rock.

PVC Roofing

Polyvinyl Chloride (PVC) roofing is a popular choice for flat roofs due to its durability and resistance to weathering. PVC is a single-ply roofing membrane that is highly resistant to tears, punctures, and impact.

Flat Roofing FAQ

Have another question? Ask us!

There is no single best material for every flat roof. The optimal choice depends on several factors:

  • Climate and weather patterns in your area – some materials handle heat, cold, wind, hail better.
  • Roof complexity and slope – options like PVC excel on low slope roofs.
  • Expected foot traffic and usage – materials like EPDM are more puncture resistant.
  • Fire rating needs – TPO rates higher than asphalt for fire performance.
  • Longevity goals – materials like PVC and TPO can last 50+ years with proper installation.
  • Sustainability preferences – TPO offers recycling programs.
  • Energy efficiency needs – some insulate better to save on energy costs.
  • Budget – premium materials generally cost more upfront.

I recommend having a knowledgeable roofing contractor assess your specific situation and advise the best material choice based on your climate, roof design, budget and needs. This tailored approach gets you the optimal flat roofing solution.

The lifespan of a flat roof depends on the type of material used and the level of maintenance it receives. On average, a flat roof can last anywhere from 10 to 30 years. PVC and TPO roofs can last up to 30 years, while EPDM and modified bitumen roofs have a lifespan of around 20 years.

The duration of a new roof installation varies depending on the size and complexity of the project. Generally, it can take anywhere from a few days to a few weeks to complete the installation process. However, it’s important to note that unexpected issues can arise during the installation process, which may cause delays.

Yes, like any other type of roof, a flat roof requires maintenance to ensure its longevity and functionality. Regular inspections, cleanings, and repairs can help prevent major issues from occurring down the line. It’s important to address any issues as soon as possible to avoid more costly repairs in the future.

Signs that you may need to repair your commercial or industrial roof include leaks, cracks, and damage to the roof’s membrane. Additionally, if your energy bills are unusually high or if you notice a decrease in the overall performance of your HVAC system, it may be a sign that your roof needs repairs.

In some cases, it is possible to install a new flat roof over an existing one. However, this method is not always recommended, as it can add additional weight to the structure and may not provide adequate insulation. It’s best to consult with a professional roofer to determine if this method is appropriate for your specific situation.

  • Ask specific questions about their experience with your type of flat roof system – single ply, built-up, modified bitumen etc. Not all flat roof experience is equal.
  • Inquire about ongoing manufacturer training and certifications – this demonstrates commitment to staying current.
  • Request a portfolio of previous work similar to yours to judge the quality of finished products.
  • Consider bonded roofers who provide financial protection against potential damages or issues.

If starting your journey from the Gateway Arch, head west on Market Street, where you’ll pass by the historic Old Courthouse. 

Next, make a left turn onto S Broadway. After just two blocks, you’ll be in front of Busch Stadium. Here, make another left onto Spruce Street.

Continue on Spruce Street until you reach the I-55 / I-44 West entrance. Merge onto the interstate and prepare for a straight shot for the next 14 miles.

As you approach Fenton, take exit 275 toward N Hwy Dr/Soccer Park Rd. Once off the interstate, make a left onto Cassens Dr. We’ll see you soon.

Get Your Free Flat Roofing Quote

We make the estimate process simple and obligation-free. Our team will provide a comprehensive, transparent quote outlining your flat roofing project’s full scope and cost.

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