Commercial Roofing
Commercial Roofing in St. Louis, MO
Low-slope systems with NDL warranty capability.
The Situation
Low-slope commercial roofing is a different discipline from residential, and most contractors sized like us do not hold the credential required to install a manufacturer-warranted system. The result for a building owner is a roof installed by a crew learning on the job, backed by a workmanship warranty that is worth exactly as much as the company standing behind it.
What's Included in Every Commercial Roofing Job
- Modified bitumen low-slope system installation
- Tear-off, recover, and new construction
- Tapered insulation and positive drainage design
- Parapet, curb, and penetration flashing detailing
- Roof drain, scupper, and overflow work
- NDL manufacturer warranty on qualifying systems
- Preventive maintenance and inspection programs
- Leak investigation and repair on existing systems
Materials & Brands
We are credentialed through CertainTeed's low-slope program with Master Craftsman certification in modified bitumen, which allows us to install and warranty NDL — No Dollar Limit — commercial roof systems. That is a real distinction: it means the manufacturer inspects and stands behind the assembly without a cap on repair cost, and it is not available to contractors without the certification.
How It Works
Our Commercial Roofing Process
- STEP 01
Roof survey
We survey the existing assembly, core it where appropriate, and document current condition and drainage performance.
- STEP 02
System recommendation
Tear-off versus recover, insulation strategy, and drainage correction, with the reasoning and the warranty implications of each.
- STEP 03
Scope and schedule
A written scope with a schedule built around your operations. Occupied buildings get phased work.
- STEP 04
Installation
Certified crews, documented daily progress, and detail work at every curb, parapet, and penetration.
- STEP 05
Manufacturer inspection and warranty
The manufacturer inspects the completed system and issues the NDL warranty. You receive the full documentation package.
St. Louis & St. Charles Specifics
Why Commercial Roofing Is Different in Greater St. Louis
Commercial buildings across the St. Louis metro carry a large stock of aging low-slope roofs, many of them installed with inadequate slope and now ponding water after every storm. Ponding accelerates membrane failure and adds structural load. Correcting drainage with tapered insulation during a tear-off is usually the difference between a fifteen-year roof and a twenty-five-year roof.
Questions
Commercial Roofing FAQ
No Dollar Limit. The manufacturer warrants the installed system without a cap on the cost of covered repairs, and inspects the completed installation before issuing it. Only contractors holding the required certification can offer one, which is why it is worth asking about specifically.
Yes. Occupied commercial work is phased and scheduled around operations, including after-hours and weekend work where the situation calls for it.
Yes. Scheduled inspection and preventive maintenance programs materially extend low-slope service life and are a condition of keeping some manufacturer warranties in force.
Free, No-Pressure Inspection
Find out what you're actually dealing with
We get on the roof, document every slope, and hand you the photos — whether or not you hire us.