Outdoor Communication Cabinet Waterproofing and Corrosion Protection

A real field reference showing how a continuous external polyurea layer was built around weather-exposed cabinet surfaces and details.

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Project snapshot

Sector: Telecommunications infrastructure
Protected asset: Outdoor communication equipment cabinets
Taihe scope: Substrate inspection, detail treatment, continuous coating and final visual inspection
Evidence basis: Site photographs, commissioning records and engineering drawings

Starting condition

Outdoor cabinets were exposed to rain, thermal cycling and corrosion at seams, edges, fasteners and service penetrations.

Site constraints

Doors, vents, cable entries, labels and earthing points had to remain functional. Existing surface condition and previous repairs created different preparation needs across the cabinet.

Engineering decision

The team used broad-area coating to establish continuity, then controlled material around seams, roof edges, door interfaces and penetrations so that access and ventilation were retained.

Execution process

01
Inspect coating condition, rust, seals, fasteners and drainage paths.
02
Clean and prepare sound surfaces; repair unstable edges and corrosion points.
03
Mask doors, vents, labels, connectors and service interfaces.
04
Apply the protective layer and detail seams, corners and penetrations.
05
Remove masking, inspect continuity and correct incomplete edges.

Inspection and commissioning

Visual record of substrate and completed coverage
Detail check at seams, corners and cable entries
Door, vent and service-access function confirmed after work
Local repair points recorded for future inspection

Documented outcome

The photographic record shows a continuous external protective finish across cabinet panels and detailed interfaces while maintaining access to operating components.