Old flat roof is ponding water and leakage after rain. Blistering flat roof.
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Drainage Problem

Ponding Water on Commercial Roofs

Causes, Risks & Professional Solutions

What is Ponding Water?

Ponding water occurs when water remains on your roof for more than 48 hours after rainfall. In Metro Atlanta's heavy storm seasons, poor drainage can quickly turn into roof damage or leak points. Silver Rock Roofing identifies ponding issues, corrects drainage failures, and prevents long-term membrane deterioration.

Industry Standard: Water should drain from a commercial roof within 48 hours. Anything longer is considered ponding and requires professional evaluation.

What Causes Ponding Water?

  • Blocked drains or scuppers — debris prevents water flow
  • Insufficient slope — improper roof pitch
  • Collapsed insulation — creates low spots
  • Poor drainage design — not enough drains
  • Aging roof systems — sagging over time
  • Debris buildup — leaves, branches blocking flow

Why Ponding Water is Dangerous

  • Accelerates membrane deterioration — UV + water = breakdown
  • Causes seam failures — constant moisture weakens seams
  • Leads to structural sagging — weight can damage deck
  • Creates mold and interior damage — water finds entry points
  • Shortens roof lifespan — dramatically reduces life expectancy

Our Ponding Water Solutions

Silver Rock Roofing provides comprehensive drainage solutions to eliminate ponding and prevent future water accumulation

Drain Cleaning & Clearing

Remove debris, clean strainers, and ensure proper water flow through all drainage points

Drain Retrofit Installation

Add new drains in problem areas to improve overall drainage capacity

Adding Tapered Insulation

Install tapered insulation systems to create proper slope and direct water to drains

Slope Correction

Correct insufficient slope areas that contribute to water accumulation

Membrane Repairs

Fix any membrane damage caused by prolonged water exposure

Preventative Maintenance

Regular inspections and cleaning to prevent future ponding issues

Schedule a Ponding Water Evaluation

Don't wait for ponding water to cause expensive damage. Silver Rock Roofing provides fast, professional evaluations and lasting solutions.

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