HVAC Cut Through the Membrane on My Commercial Flat Roof – Chicago Repair Options
June 17, 2025

Protecting Commercial Flat Roofs in Chicago from HVAC Damage: Why Sacrificial Membranes Matter
When it comes to commercial roofing in Chicago, summer heat brings more than just rising temperatures—it brings increased HVAC usage. At Anchor Point Roofing, we’ve seen it time and time again: air conditioning condensers sitting directly on a flat roof membrane can cause serious problems during the warmer months.
As these HVAC units power on and off, they vibrate and shift. Over time, this constant movement can cut into the roof membrane, especially on modified bitumen or TPO systems. The result? Punctures, leaks, and costly water damage that require urgent commercial roof repairs.
One effective solution is to install a sacrificial membrane beneath the condenser. This sacrificial membrane is a loose layer of roofing material that acts as a buffer between the HVAC unit and the actual roofing system. It takes the wear and tear from the unit’s vibration—protecting the integrity of your main membrane.
At Anchor Point Roofing, we specialize in identifying these potential risks during inspections and recommending practical solutions that prevent premature roof failure. If your building has rooftop HVAC units and you’re unsure if they’re properly protected, now is the time to act.
Contact us today for expert commercial roofing services in Chicago and let’s make sure your roof is protected all summer long.
Location: Chicago, IL
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