Flat Roof Membrane Survey

Key Findings

Observed Roof Conditions

The inspection imagery identified multiple drainage-related concerns. The main finding was prolonged ponding around low areas, with visible debris accumulation and water not efficiently channeling toward roof drains.

Ponding Water

Large dark retention zones visible across the membrane surface.

Drain Inefficiency

Water appears to remain around drains instead of clearing effectively.

Debris Build-Up

Leaf and sediment accumulation present near low points and drains.

Surface Variation

Uneven drying patterns may indicate aging, low slope areas, or prior moisture exposure.

Annotated Images

Inspection Photo Set

Annotated aerial images showing the main roof drainage concerns and visual evidence captured during the drone inspection.

Drainage Overview

Wide annotated view showing multiple ponding areas, drain inefficiency, debris accumulation, and drainage direction indicators.

Annotated ponding water close-up on flat roof membrane

Main Ponding Area

Close annotated view showing prolonged retention, debris buildup, and water not properly channeling toward the drain.

Drain Inefficiency

Focused annotated image identifying a drain surrounded by standing water and debris concentration.

Aerial overview of commercial flat roof inspection site

Site Context

Overall aerial view of the roof area used to document broader site layout and drainage distribution.

Recommended Next Steps

Practical Follow-Up

Clear drains and debris: Remove leaf buildup and sediment from low areas and roof drains.

Review slope and low points: Confirm whether ponding is caused by poor slope, settlement, or drain elevation.

Inspect membrane condition: Check seams, patches, and wet zones from roof level.

Consider thermal imaging: Use thermal review to screen for possible trapped moisture beneath the membrane.

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