Damaged Commercial Flat Roof Membrane Caused by Sunken HVAC Unit: Causes, Risks, and Repair Solutions

In Chicago’s demanding climate, commercial flat roofs face a lot of wear and tear. One common yet often overlooked issue is a sunken HVAC unit—when the heavy equipment settles lower than its original position, often due to weakened support or roof decking. This shift can cause stress on the surrounding commercial roofing membrane, eventually leading to cracks, punctures, and water intrusion.

How a Sunken HVAC Unit Damages Your Roof

A sunken HVAC unit can compromise the flat roof system in multiple ways:

Membrane stress and tearing – The uneven weight distribution stretches the membrane, causing cracks.

Pooling water – Depressions around the unit trap water, accelerating deterioration.

Hidden leaks – Damage may occur beneath the unit, making it harder to spot until leaks spread indoors.

Over time, these issues can lead to costly structural damage, interior repairs, and even health risks from mold.

Our Repair Approach at Anchor Point Roofing

At Anchor Point Roofing, we specialize in commercial roofing solutions tailored for Chicago businesses. When addressing a damaged membrane caused by a sunken HVAC unit, our repair process typically includes:

Careful removal of the damaged roofing membrane around the affected area.

Installing a new modified bitumen patch to restore waterproofing and durability.

Touching up with aluminum coating for added UV protection and extended lifespan.

We make sure the repair not only fixes the immediate damage but also helps prevent future issues from recurring.

Why Choose Anchor Point Roofing for Your Chicago Commercial Roof Repairs

With years of experience in commercial flat roofing across Chicago, we understand the unique challenges local buildings face. Our team combines technical expertise with high-quality materials to ensure every repair is done right the first time.

If your commercial property’s flat roof has been damaged by a sunken HVAC unit—or if you suspect it might be—contact Anchor Point Roofing today for a thorough inspection and expert repair recommendations.

Location: Chicago, IL