Trapped Water Under Commercial Roof Membrane in Chicago: Causes, Risks & Repair Solutions

Trapped water beneath a commercial roof membrane is a common issue, especially in older or poorly maintained roofing systems. In Chicago, where commercial roofs are constantly exposed to shifting temperatures and heavy rain, moisture buildup under the membrane can lead to serious damage if not addressed promptly.

What Happens When Water Gets Trapped Under the Membrane?

When water becomes trapped beneath the roofing membrane, it creates pressure and weakens the adhesive bond. Over time, this can lead to blistering, membrane separation, and mold or rot in the insulation and substrate. Left untreated, it can cause interior leaks, damage to building materials, and even structural issues.

Expert Commercial Roof Repairs in Chicago by Anchor Point Roofing

At Anchor Point Roofing, we specialize in commercial roof repairs throughout the Chicago area. When addressing trapped water under the membrane, our process includes:

Carefully removing the affected roofing membrane

Draining and drying out the trapped water

Prepping the area with an asphalt primer to ensure proper adhesion

Installing a new membrane that matches the existing system—whether it’s granulated modified bitumen, smooth modified, or TPO

We tailor each repair based on the existing roof system to ensure long-lasting results and minimize disruption to your business.

If you suspect trapped water under your commercial roof membrane, don’t wait for the damage to worsen. Contact Anchor Point Roofing for a professional inspection and reliable commercial roof repairs in Chicago.

Service provided: Commercial Roofing

Location: Chicago, IL