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What to Do About an Old, Leaking Flat Roof on a Commercial Building in Chicago

June 24, 2025

What to Do About an Old, Leaking Flat Roof on a Commercial Building in Chicago

If you’re dealing with an old, leaky flat roof on your commercial building in Chicago, you're not alone. Over time, flat roofs—especially those with aging modified bitumen membranes—begin to show signs of wear such as alligatoring (a cracking pattern that looks like reptile skin), separation or detachment from flashing, and water infiltration that can disrupt your operations and damage the building structure.

These are clear signs that your commercial flat roof may be beyond simple repairs and in need of full replacement.

At Anchor Point Roofing, we specialize in commercial roofing and roof repairs throughout Chicago. For flat roofs showing extensive deterioration, our recommendation is to replace the failing membrane with a smooth modified bitumen system, which provides strong protection and long-term durability. We’ll also apply an aluminum coating over the new membrane to enhance UV resistance and extend the life of the roof.

If your commercial roof is leaking or visibly breaking down, don’t wait until the damage worsens. Contact Anchor Point Roofing for a thorough inspection and a replacement solution tailored to your property’s needs.

Location: Chicago, IL

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Let Us Help You Get Back On Your Rooftop. Contact Our Chicago Roofers Today!