Standing water on a flat roof — Chicago, Illinois
If water is still pooling on your flat roof 48 hours after the last rain, you have a ponding problem. Flat roofs are designed with a slight slope to drain, but sagging decking, clogged internal drains, or shifted insulation can create low spots where water sits. Prolonged ponding accelerates membrane deterioration, adds hundreds of pounds of dead load to the structure, and eventually causes leaks. A roofer can identify the cause — whether it's a drainage issue, structural deflection, or membrane failure — and restore proper drainage with tapered insulation, additional drains, or membrane repair.
Waarom dit veel voorkomt in Chicago
Chicago's freeze-thaw cycles, heavy snowfall, and ice dam formation are brutal on roofs. Flat roofs on bungalows and two-flats are especially vulnerable. Wind damage from severe storms off Lake Michigan accelerates shingle deterioration.
Who to call
For this problem in Chicago, call a: Dakdekker
Vind een Dakdekker in ChicagoSymptoms to look for
- Visible puddles or standing water on the roof two or more days after rainfall
- Dark stains or algae growth in specific areas of the roof membrane
- Sagging or soft spots when walking on the roof surface
- Water stains or drips appearing on the ceiling below the flat roof section
- Clogged or slow-draining roof drains, scuppers, or internal downspouts
Spoeddienst in Chicago
Emergency home services in Chicago are widely available 24/7, with typical response times of 30–60 minutes. After-hours rates range from $100–$200/hour. During polar vortex events, heating emergencies can see delays of 4–8 hours due to overwhelming demand. Illinois requires plumbing and electrical licenses for all work.