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When a high school photography department experienced ongoing moisture issues, the source was traced to a failed commercial cool room system. Persistent leaking and condensation created elevated moisture to surrounding building materials and elevated humidity across multiple rooms within the photography facilities, resulting in widespread mould contamination and water damage.

This project demonstrates the risk that unresolved moisture poses within education facilities and commercial buildings, particularly in specialised environments such as dark rooms and laboratory-style spaces that have low sunlight and ventilation.

The Problem

Commercial facilities and education environments with enclosed rooms (such as photography labs and dark rooms) are high-risk for mould amplification when any excess humidity or condensation is present. In this case, persistent moisture from the cool room system affected multiple adjacent rooms, resulting in:
• Elevated humidity and condensation
• Widespread mould contamination to contents and surfaces
• Complex contents handling requirements (restorable vs non-restorable including historical and sentimental items)
• Need for strict containment to prevent cross-contamination across the facility

The Solution

Our commercial mould remediation and water damage response was delivered as an in-order, controlled process. The scope of works and methodology are integrated below as the stepped solution:

Step 1 — Source Rectification (Pre-Works Requirement)

Remediation works were scheduled after the cool room was replaced to stop active leaking and condensation. Moisture source rectification is essential for long-term remediation success in commercial facilities.

Step 2 — Engineering Controls & Containment

Containment barriers were installed between rooms to prevent cross-contamination. HEPA air scrubbers and dehumidifiers were deployed to continuously filter airborne particulates in all rooms, dry concrete subfloors and control relative humidity. These controls provided environmental Stabilisation and maintained separation across the facility.

Step 3 — Contents Triage, Categorisation & Handling

A large volume of contents (historical photography items, cameras, lab materials and stored equipment) was systematically assessed and categorised into:
• Restorable contents — retained for controlled cleaning
• Non-restorable contents — documented and presented for client (school) sign-off prior to disposal

Step 4 — Establish a Clean Storage Chamber (Controlled Staging)

One room was emptied and remediated early and converted into a clean storage chamber. Restorable contents were cleaned and then stored in this controlled, clean environment to prevent recontamination.

Step 5 — Building Strip-Out of Affected Materials (Flooring & Shelving)

Porous and heavily impacted materials were removed to eliminate embedded contamination:
• Strip-out and disposal of mould and water damaged flooring
• Strip-out and disposal of contaminated shelving systems

Step 6 — Room Remediation Cleaning (HEPA Sandwich Method)

Once rooms were cleared, all accessible surfaces were remediated using a HEPA ‘sandwich’ methodology:
• HEPA vacuum
• Antimicrobial wet-wipe / agitation where required
• Final HEPA vacuum
This approach removes surface contamination and residual particulate across commercial interiors (with already installed air filtration devices cleaning the air at the same time)

Step 7 — Post Remediation Verification (Third-Party Clearance)

A third-party hygienist/IEP completed air and surface verification. Clearance was achieved on the first assessment, confirming the rooms were returned to a condition suitable for occupancy and normal facility operations.

The Result

The photography facilities were returned to safe operational use. Three primary rooms were stabilised and restored:
• One room served as the controlled clean storage chamber for restored contents
• Two rooms were fully cleared, stripped where required (flooring/shelving), and remediated

Following completion, surfaces were visibly clean and third-party air/surface testing confirmed the areas were ready for re-occupancy by the school.

Why This Matters for Commercial Facilities

This project underscores a common commercial risk: condensation and humidity failures (especially around cool rooms) can rapidly drive mould growth and water damage impacts across adjoining rooms. Dark rooms, labs, storage areas and other enclosed facility spaces require proactive moisture management, ventilation, and rapid response when leaks occur.

Early intervention helps facilities reduce downtime, limit asset loss, and avoid large-scale mould remediation costs. Any signs of visible mould growth forming or excess moisture should not be ignored as the problem can continually grow given time.