What to Do If Water Is Trapped Under a Commercial Flat Roof Membrane in Chicago
June 12, 2025

If you suspect water is trapped beneath the membrane of your commercial flat roof, it’s important to take action quickly. Moisture below the surface can cause hidden damage to the insulation, decking, and even the interior of your building. At Anchor Point Roofing, we specialize in commercial roofing in Chicago and offer reliable solutions to restore the integrity of your roof.
Here’s how we handle trapped water issues:
Perform a thorough inspection of your commercial roof
Cut into the membrane to confirm moisture presence and drain the trapped water
Check the condition of the substrate and framing below
Replace any compromised material as needed
Install a new membrane that matches your existing system — whether it’s granulated modified bitumen, smooth modified, or TPO
Apply an aluminum coating if the system is modified bitumen, to protect and extend the roof’s lifespan
If you're dealing with soft spots, blistering, or visible sagging, we’ll make sure your commercial roof is properly repaired and protected.
Looking for expert commercial roofing services in Chicago? Contact Anchor Point Roofing today to schedule your inspection.
Location: Chicago, IL
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