Ventilation affects more than the mirror
When people think about an extractor fan, they often think about clearing steam from the mirror. The same moisture also reaches paint, timber, veneer, cabinet edges, metal finishes, sealant and the back of furniture.
In humid coastal areas, the room’s drying behaviour matters even more. Ventilation does not make a vulnerable cabinet waterproof, but it can reduce the repeated humidity that places stress on the finish.
The duct route matters
An extractor should be selected and installed as a complete ventilation system, with the route, bends, discharge point and replacement air considered. Electrical installation must be carried out by the appropriately qualified professional.
The fan should not simply discharge into a roof space or another concealed area where moisture can accumulate.
Joinery and ventilation work together
A timber vanity still needs correct finishing, sealed vulnerable edges and prompt cleaning of splashes. A melamine-faced cabinet still needs protected cut-outs and leak-free plumbing. Ventilation is one part of the protection strategy, not a substitute for construction quality.
Good bathroom design considers the air as well as the water.
Read why timber bathroom furniture needs ventilation, or see the coastal bathroom planning guide.