Mould reduction in Sydney

Why buildings here are at risk

Sydney averages relative humidity in the 60–75% range through summer, with heavy east-coast rain events that saturate façades and roof plant. The pressure is not seasonal in the way inland cities are — the harbour and coastal exposure keep moisture in the air across most of the year, and buildings that run continuous air-conditioning never get the drying cycle an openable building would.

The building stock

The commercial stock splits three ways. CBD and North Sydney towers with sealed façades and central plant, where a single AHU problem distributes spores across whole floors. Suburban office parks and strata buildings from the 1980s and 90s, where the original waterproofing is now well past design life. And converted warehouse and heritage stock across Surry Hills, Alexandria and Marrickville, where masonry, poor subfloor ventilation and modern fit-outs combine badly.

What we get called for

Strata disputes over who pays for common-property water ingress. Tenancy make-good arguments in older office stock. Aged-care and childcare operators facing accreditation scrutiny across a very large metropolitan footprint. Storm-driven water ingress in the eastern suburbs and northern beaches.