St. Louis County Transportation Building

A two-story county building constructed in the late 1990s had a recurring moisture problem, and the owner needed to know where the water was actually coming from before spending on repairs. G&W was brought in to investigate the storefront and structurally glazed curtainwall running in a ribbon across both floors of the office wing.

A two-person team started with a visual walk of the enclosure, then ran spray nozzle water testing to trace the source of infiltration. Infrared cameras and moisture meters added a non-destructive read on where water was collecting behind the wall. G&W delivered a written report with photographs laying out the findings and its opinion on the causes of the leaks.

Location:
Maryland Heights, MO

Client Type:
Owner

Testing Scope:
Storefront and ribbon curtainwall, two floors.

METHODS & STANDARDS

AAMA 501.2

Field spray nozzle check of installed fenestration

OUR APPROACH

Visual Observation

Storefront and ribbon curtainwall walked for conditions

AAMA 501.2 Spray Testing

Spray nozzle applied to installed fenestration

Infrared & Moisture Scan

IR cameras and moisture meters behind wall

Interior Access Review

Water paths followed above lay-in ceiling grids

Findings Report

Written report with photographs and probable causes

FIELD WORK

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