New GAF TPO Flat Roof Installation in Oak Brook

Flat roofs have one job - keep water out and move it off the surface. When that stops happening, you end up with pooling, membrane deterioration, and eventually leaks that work their way into the building. That's exactly the kind of problem we were brought in to fix on this Oak Brook property.

Here's what we were working with before we got started: an aging flat roof section sitting between the pitched tile wings of the building, showing clear signs of membrane failure. Patching and tarping can only buy so much time. At a certain point, the right call is a full replacement - and that's what this building needed.

We installed a GAF 60 mil fully adhered TPO system over a new tapered insulation base. The tapered insulation is the piece a lot of people overlook. It creates a deliberate slope across what looks like a flat surface, so water actually has somewhere to go. Without it, you're just waiting for the next puddle to become the next problem. The fully adhered method bonds the TPO membrane directly to the insulation below, which means no wind uplift gaps and a much tighter, more durable finished system.

TPO is one of the best options available for flat roofing right now. The white reflective surface handles heat well, the membrane holds up to foot traffic and UV exposure, and at 60 mil thickness you're getting serious protection - not a bare-minimum install. On a building like this, where the flat section sits right in the middle of a high-end architectural design, the quality of the work matters even more.

If your flat roof is getting up there in age - or you're already seeing soft spots, blistering, or water stains inside - it's worth having someone take a look before a manageable repair turns into a full-scale interior problem. We do this kind of work across the Oak Brook area and throughout the region.