Chicago Flat Roof Repair and Silicone Coating Restoration

This one started with a roof that had clearly been through a lot. The existing surface had a green roof system on part of it - sedum mats that had seen better days - and the underlying flat roof membrane was worn, weathered, and well past due for some attention. Left alone, a roof in that condition is just a slow leak waiting to happen.

Here's what we were working with: an aging flat roof on a multi-story Chicago building, with deteriorated membrane sections, questionable seams, and the kind of surface wear that lets water find its way in over time. Ponding water is one of the biggest enemies of any flat roof, and a surface that's lost its integrity just can't fight it off.

We got to work stripping things back, making the necessary repairs, and prepping the surface for a full silicone coating application. Silicone is our go-to for situations like this. It bonds tight to the existing substrate, stays flexible through Chicago's freeze-thaw cycles, and it handles standing water without breaking down - which is a big deal on a flat roof that can't always drain fast enough after a heavy rain.

The finished surface is bright white, seamless, and built to take whatever gets thrown at it. The coating runs edge to edge, wrapping the parapet walls and working around every penetration and rooftop unit. That's the kind of detail that actually keeps water out. A silicone restoration like this is also a smart alternative to a full tear-off - you get serious protection without the cost or disruption of starting from scratch.

If your flat roof is showing its age - cracking, bubbling, soft spots, or visible wear - fall is a good time to deal with it before winter weather moves in. A roof that's already compromised doesn't need much encouragement to start leaking.