The Brief Was the Joinery. The Real Problem Was the Concrete.

Why does a hotel conversion need a weathertightness investigation first?

Converting an office building into a luxury hotel means committing to a much higher standard of building envelope performance before design work locks in. At an Albert Street commercial building, what started as a brief to check the aluminium joinery turned up a bigger, structural façade problem that the architect needed to know about before finalising the hotel design.

The brief: check the joinery. The finding: check the concrete.

A prominent architectural firm engaged Aamsko to investigate suspected moisture ingress ahead of converting a commercial Albert Street building into a luxury hotel. The original brief was narrow — inspect the aluminium joinery and cladding system, run targeted water testing, and report on whether the joinery was behind the internal moisture damage already flagged in an earlier 2017 review. Aamsko’s investigation went further, because the evidence pointed further: the weathertightness problem extended well beyond the joinery, into the condition of the building’s original concrete façade panels.

The approach: layered diagnosis, not a single test

Aamsko combined several investigative methods rather than relying on one:

• Visual internal and external inspection of every concrete panel and every aluminium-framed joinery bay, recorded in photography and video.
• Thermal imaging to find temperature anomalies consistent with trapped moisture.
• Moisture meter readings to 300mm depth, mapping how far damp had actually penetrated.
• A review of the original 1985 architectural and façade panel drawings, to understand how the building was actually built, not just how it was performing now.
• Targeted water-ingress testing at four locations selected specifically for their differing damage patterns, panel type and construction joint design — each one tested with pre-test moisture readings, controlled water application, then post-test thermal and moisture evaluation.

Where staining, damp linings or musty odours suggested chronic ingress, Aamsko went further with invasive inspection — removing linings and, in pre-agreed locations, making minor concrete cuts to confirm exactly how water was tracking through the structure.

What the testing found

Four related but distinct problems were confirmed in the concrete panel façade:

• Cracking — vertical, horizontal and re-entrant cracks, particularly around window bays, consistent with failed movement control and thermal cycling. Testing confirmed these cracks were actively drawing in water.
• Hairline cracking — easy to miss on a casual inspection, but an early indicator of panel stress that expands under ongoing environmental exposure if left untreated.
• Crazing — a fine network of shallow surface cracks across several exposed panel areas, caused by environmental exposure and ageing coatings, not structurally critical yet but a clear signal to address early rather than later.
• Spalling and reinforcement corrosion — moisture reaching the embedded steel reinforcement in several panels, with corrosion already expanding and displacing the surrounding concrete, a defect standards require be addressed to maintain the panel’s performance.

The investigation was deliberately non-destructive outside the four pre-agreed test locations, and was scoped to inform a remediation specification, not to act as one — further deterioration is realistically possible once coatings and paint layers come off during the remediation itself, which is why a full remediation specification still needs to be developed before any façade work goes to tender.

The result

The architect and developer went into the hotel’s design phase with a clear, evidence-based picture of the building’s actual condition — not an assumption carried over from a 2017 review that turned out to understate the real problem. That’s the foundation the next phase of the building’s transformation into a luxury hotel is now being built on.