
Commercial flat roofing
Commercial Flat Roofing in St. Louis
H&F Exteriors installs TPO, PVC and EPDM flat roofs, applies silicone roof coatings that can add years to the roof you already have, and maintains flat roofs so they keep the weather out.
4.9900+ Google reviewsNo interest if paid in full within 18 months¹
Request a flat roof estimate
Pick a day and time for a site visit. We confirm the same day. No cost and no obligation.
Flat roof systems
Flat roof systems we install
TPO & PVC
White, heat-welded single-ply membranes. They reflect summer sun to help lower cooling bills, and their welded seams hold up to standing water.
EPDM
A tough rubber membrane with a long track record on flat roofs. It stays flexible through hot summers and cold winters.
Silicone roof coatings
Silicone roof coatings form a seamless, watertight layer over your existing flat roof, an alternative to tearing it off and replacing it.
TPO & PVC roofing
TPO is a single-ply membrane rolled out in wide sheets, with the seams heat-welded into one continuous surface. The white surface reflects sunlight, which helps keep the building cooler in a St. Louis summer and can lower your energy bills.
PVC is a similar white single-ply membrane, heat-welded the same way, and it stands up well to grease and chemicals, which makes it a good fit for restaurants and buildings with rooftop exhaust. We install both on flat and low-slope roofs on offices, retail buildings, warehouses and multi-family buildings.

EPDM rubber roofing
EPDM is a synthetic rubber membrane that has been used on flat roofs for decades. It stays flexible in heat and cold, stands up to hail, and is a dependable choice for buildings that need a durable, straightforward flat roof.
Extend the life of a flat roof with a silicone coating
H&F is certified to apply silicone roof coatings. The coating goes on over your current flat roof and cures into one seamless, watertight layer with no seams for water to find.
A coating can add up to 20 years of life to a flat roof for a fraction of the cost of a full replacement, with no tear-off and far less disruption inside the building.
A coating needs a sound roof under it. We inspect the roof first and tell you plainly whether it is a candidate for a coating or needs to be replaced.

Flat roof services
Flat roof systems that fit your building
Membranes and restoration
We install TPO, PVC and EPDM membranes, and restore sound roofs with a silicone roof coating, sealing the weak points so water drains and the building stays dry.
Replacement and upgrades
When patching no longer pays off, we tear off the worn layers, check the deck, and install a new membrane, with the work planned around your business.
Maintenance and repairs
Regular inspections that catch open seams, ponding water and failing flashing early, with each visit documented with photos, plus help with your insurance claim after a storm.
Commercial flat roof maintenance
Flat roofs face standing water, temperature swings and foot traffic from HVAC service. Small problems like an open seam, a clogged drain or a cracked flashing grow quietly until water shows up inside.
We inspect flat roofs on a schedule, clear drains, reseal seams and flashing, and document every visit with photos so you can see the roof’s condition and plan for it. After a storm, we check for damage and help you with the insurance claim.
Commercial flat roofing questions
What flat roof systems does H&F install?
TPO, PVC and EPDM membranes, and silicone roof coatings over existing flat roofs.
TPO or EPDM: which is better for my building?
TPO is white and reflects sunlight, which helps with cooling bills, and its seams are heat-welded. EPDM is a flexible rubber membrane with a long track record. We look at your building, its use and its drainage and recommend the one that fits.
What is a silicone roof coating?
A liquid silicone layer applied over an existing flat roof. It cures into a seamless, watertight barrier that protects the roof underneath, so the roof can stay in service instead of being torn off.
How much life can a roof coating add?
A silicone coating can add up to 20 years to a flat roof that is in sound condition, for a fraction of the cost of a full replacement.
Do you maintain commercial flat roofs?
Yes. We inspect flat roofs, clear drains, reseal seams and flashing, and document each visit with photos so small problems are fixed before they leak.
What warranty comes with the work?
Our workmanship warranty covers defects in our installation for two years (90 days on repairs). The membrane or coating is covered by the manufacturer’s warranty.
How it works
How a commercial flat roof project works

Request your estimate
Book online or call. Tell us the property, what you are seeing and who we should meet on site.
Site visit
We walk the building with you or your property manager, measure it, and photograph what we find.
Your proposal
You get an itemized proposal with the system, the materials and the scope written out, so owners and boards can compare it line by line.
Scheduling
We set the work dates with you before anything starts, so tenants, staff and customers know what to expect.
Installation and walkthrough
We do the work, clean up as we go, and walk the finished job with you.
Service areas
Areas we serve
From our office in Glen Carbon, our commercial crews work across eastern Missouri and central and southern Illinois: St. Louis, Edwardsville and Belleville, west to Columbia and Jefferson City, north to Quincy, Peoria, Decatur, Litchfield and Effingham, and south to Murphysboro and Cape Girardeau.
- states
- 2
- from Glen Carbon
- 140 mi
Resources
Download a one-page flyer to print or pass along.
Commercial Roofing
Download Commercial Roofing (PDF)
Free flat roof estimate
Book a site visit online. We inspect your flat roof, tell you whether it needs a repair, a coating or a new membrane, and send an itemized proposal.
4.9900+ reviewsNo interest if paid in full within 18 months¹
