Galvanised or painted? Rust, frost and the Canberra climate
Canberra is hard on steel in a way the coast is not. Frost most mornings through winter, hard UV in summer, and road salt is not the issue — condensation and standing water are. The finish you choose decides whether a trailer lasts ten years or thirty.
Hot-dip galvanising vs paint
Galvanising bonds zinc through the whole section, inside and out, including the inside of the chassis rails where rust actually starts. Paint protects only what it covers, and the first stone chip breaks the seal. Galvanising costs more up front and is usually the cheaper decision over twenty years.
Where trailers actually rust
Not the panels — the closed sections. Water gets into a chassis rail through a drain hole or a weld and never fully dries. Drainage, sealed welds and a galvanised interior matter more than the finish you can see.
Frost, thaw and standing water
A Canberra winter puts a trailer through a freeze–thaw cycle most mornings. Water sitting in a floor seam or a rail expands as it freezes and works the coating loose. Sloped floors and open drain points do more than any coating.
Summer UV
Paint chalks and fades under Canberra summer sun, and canvas and plastics go brittle faster than most people expect. Galvanising is indifferent to UV, which is one reason it wins on a trailer that lives outdoors year-round.
The trip to the coast
Salt air down the Clyde, and salt water if you back a trailer in at Batemans Bay, changes the calculation entirely. If the trailer will ever be immersed, galvanising stops being optional — and rinse it afterwards.
Bearings take the same beating
Water gets into wheel bearings just as readily as into a chassis rail. Sealed or serviceable bearings and a regular repack are what stand between a service and a roadside failure — see servicing.
Keep reading
Ask about a build, a repair or a service
Tell us what you need to carry and we will come back with what suits it and what it costs. Enquiries go straight to the Resort Trailers workshop in Queanbeyan — no call centre, no obligation.