9 Red Flags Commercial Roofing Contractors Can Have
When your roof has been leaking and you're ready to get quotes, the last thing you want is to hand a large check to the wrong contractor. Here are 9 red flags to watch for.
1. No Manufacturer Approval
If a contractor is proposing a coating or foam system but isn't manufacturer-approved, they can't issue a manufacturer's warranty. Always verify certification directly with the manufacturer.
2. Recommending Full Tear-Off Without an Inspection
Any contractor recommending a complete tear-off without first doing a thorough inspection with core samples is either cutting corners or chasing the bigger job. Restoration is viable for most roofs with less than 25% wet insulation.
3. Unusually Low Bid
The lowest bid almost always means something is being left out — cheaper materials, skipped steps, or less experienced labor. Compare scopes of work carefully, not just final numbers.
4. No Written Proposal
A legitimate contractor provides a detailed written proposal specifying materials, application thickness, warranty terms, and scope of work. Verbal agreements aren't acceptable for projects of this size.
5. High-Pressure Sales Tactics
"This price is only good today" or "I can start tomorrow if you sign now" are pressure tactics designed to prevent you from getting competing quotes. A reputable contractor lets you take time to decide.
6. No Verifiable References or Case Studies
Ask for references from similar projects. A contractor who can't provide verifiable references on commercial work is a red flag.
7. Not Addressing Wet Insulation
If a contractor's proposal doesn't mention core samples or wet insulation testing, they're planning to coat over whatever is there — which leads to system failure.
8. No Safety Plan
Commercial roofing has real safety risks. A contractor without a documented safety program and proper insurance is a liability for your business.
9. Cash-Only or Unusual Payment Terms
Legitimate contractors invoice professionally and accept standard payment methods. Requests for large cash payments upfront or unusual deposit structures are warning signs.