Water pooling is one of the most common concerns property owners have after a heavy rain. If you own a commercial building or a home with a flat or low-slope roof, seeing standing water can be alarming. While some temporary ponding is normal, water that remains on your roof for extended periods can signal drainage problems that should be addressed before they lead to expensive repairs.
At The Flat Roof Guys, we specialize in EPDM rubber roofing systems throughout Northeastern Pennsylvania. Understanding why water pools and when it’s time to call a professional can help extend the life of your roof and prevent avoidable damage.
Is Water Pooling Normal?
Flat roofs are not actually perfectly flat. They are designed with a slight slope that directs water toward drains, scuppers, or gutters. After a heavy storm, it’s common for small amounts of water to remain on the roof temporarily.
However, if water is still sitting on the roof 48 hours after the rain has stopped, it is considered ponding water and deserves professional attention.
What Causes Ponding Water?
Several issues can contribute to water collecting on an EPDM rubber roof, including:
- Clogged roof drains or scuppers
- Blocked gutters or downspouts
- Structural settling of the building
- Low spots in the roof deck
- Insulation that has compressed over time
- Improper roof installation
Many of these problems develop gradually, making regular inspections an important part of protecting your investment.
Why Ponding Water Is a Problem
Although EPDM rubber roofing is highly durable and designed to withstand standing water better than many other roofing materials, long-term ponding still creates risks.
Persistent water adds unnecessary weight to the roof structure and can accelerate wear on seams, flashing, and rooftop penetrations. Debris often collects in low spots, allowing organic material to hold moisture against the membrane. During Northeastern Pennsylvania winters, trapped water can freeze and thaw repeatedly, placing additional stress on roofing components.
Over time, these conditions can increase the likelihood of leaks and shorten the overall lifespan of the roofing system.
Warning Signs to Watch For
If you notice any of the following, it’s a good idea to schedule an inspection:
- Water remains more than two days after rainfall
- Large puddles appear in the same locations after every storm
- Interior ceiling stains or active leaks
- Soft or uneven areas when walking on the roof (inspection should only be performed by trained professionals)
- Debris consistently collecting in low areas
Addressing drainage concerns early is almost always less expensive than repairing water damage later.
How The Flat Roof Guys Can Help
Every roof is different. Sometimes the solution is as simple as cleaning blocked drains or removing debris. Other situations may require improving drainage, repairing damaged insulation, resealing flashing, or correcting isolated low areas.
Our experienced team performs thorough roof inspections to identify the source of ponding water rather than simply treating the symptoms. We focus on practical, cost-effective solutions that help maximize the life of your EPDM roofing system.
Protect Your Flat Roof
If you’ve noticed standing water on your flat roof after recent storms, don’t ignore it. A professional inspection can determine whether the pooling is harmless or an early warning sign of a developing problem.
The Flat Roof Guys proudly serve commercial and residential customers throughout Wilkes-Barre, Scranton, Hazleton, Bloomsburg, and surrounding Northeastern Pennsylvania communities. Whether you need a repair, preventative maintenance, or an expert roof evaluation, we’re here to help.
Visit www.theflatroofguys.com, call (570) 332-1223, or email office@theroofrepairguys.com to schedule your flat roof inspection today.
