What Standing Water Does to a Flat Roof
A common rule of thumb in the industry is that water still sitting on a roof about 48 hours after rain is a problem. Ponding adds weight to the structure, speeds up wear on the membrane, collects dirt and plant growth, and turns any small seam opening into a steady leak. On older roofs, the weight can deepen the low spot over time, making each rain worse than the last.
How We Correct Drainage Problems
- Clearing and repairing drains, strainers and downspouts so the existing system works as designed
- Enlarging or adding scuppers through parapet walls where water backs up
- Installing crickets around equipment and against walls to push water toward drains
- Using tapered insulation during a re-roof to build slope into a dead-flat deck
Sometimes a simple cleanout is all a building needs. Other times the slope has to be rebuilt, which is best done when the roof is being replaced anyway.
Agricultural, Retail and Office Buildings
Greenville roofs range from small storefronts to large metal and low-slope buildings used for storage and equipment. Each has different priorities. A shop owner may care most about keeping customers dry, while an equipment building may need a durable roof that tolerates little maintenance. We match the system, whether a single-ply membrane, coating or metal, to how the building is used. Our flat roof repair guide covers typical membrane lifespans in more detail.
Inspection, Proposal and Install
We start with a walk of the roof and the interior, then map drains, low spots and wet areas. You receive a written proposal that explains the cause of the problem, not just the fix. During installation, we keep the building dried in at the end of each day and finish with a water test of drains when practical. You can start a drainage evaluation request online.
Common Questions
Is a little standing water on my flat roof normal?
Small puddles that dry within a day or two are common. Water that lingers longer, or that leaves rings of dirt behind, points to a drainage problem worth having checked.
Can drainage be fixed without replacing the whole roof?
Often, yes. Clearing drains, adding scuppers or installing crickets can make a big difference. Rebuilding slope across the entire roof is usually done as part of a replacement.
Do you serve businesses outside Greenville?
Yes. We work with commercial properties throughout the Delta and across Mississippi. Contact us with your building location to schedule an evaluation.
Can you help with storm damage claims for a commercial roof?
We can document storm damage with photos and written findings and meet with your adjuster. The coverage decision is made by your insurance company.