August is when the enquiries about autumn slots start, and it is the right month to be thinking about it. The window people actually want is late October into November, and it is narrow.
The two windows
This region’s floor work concentrates into two stretches, and it is entirely about building access rather than about the coating.
Late April into early May. Ski season is over, summer occupancy has not started, and the properties on the escarpment are empty for a few weeks.
Late October into November. Summer is done, the first serious snow has not arrived, and there is a gap before the ski season fills the chalets again.
Between those, the calendar is against you. Nobody wants a garage floor done in February in a rental that is booked solid, and nobody wants it done during the summer either. Which means every property manager booking epoxy flooring in The Blue Mountains for a chalet garage is trying to book the same fortnight, and so is everyone who owns a house in town and would rather not have the garage out of use in July.
Why autumn specifically matters
Because of what happens immediately after it.
From November your vehicle starts arriving home carrying brine off Highway 26 and the county roads, and it melts off onto the slab and stays there. A floor coated in late October goes into that season protected. A floor that misses the window spends another winter absorbing chloride, and the damage that does is cumulative and not reversible. The coating you eventually apply stops it getting worse; it does not undo what is already in the concrete.
For a slab that is already showing surface pitting, one more winter is a meaningful amount of additional damage. That is the case where missing the autumn window can move the job from a straightforward grind-and-coat into needing an overlay first.
What the cold does and does not stop
Worth being clear, because “the season is closing” is often used as a sales line in this trade, and because the usual version of it is wrong.
Cold stops a product, not a chemistry. Every coating carries a minimum application temperature on its data sheet, and those minimums do not sort neatly by chemistry. The Rust-Oleum 9100 data sheet rates the Winter Grade epoxy for air and substrate between 0 and 15°C. The Sikafloor-264 data sheet, also an epoxy, asks for a +10 °C substrate minimum. Polyaspartic sheets vary just as much, so before anyone quotes polyaspartic flooring in Collingwood for a cold month, the number to ask for is the minimum printed on the sheet.
The slab lags the air, whichever product you use. A slab is a large thermal mass on ground that is freezing, and it trails air temperature by days. Through late autumn an unheated Collingwood garage slab stays colder than the air above it, and it stays cold until spring. That closes the season for every product that asks for a warm slab, such as Sikafloor-264. It does not close it for the cold-rated ones.
The dew point closes days the thermometer would allow. The Rust-Oleum 9100 sheet also wants the substrate at least 3°C above dew point and relative humidity below 85%. A mild damp November morning off the bay can fail that while a colder dry one passes.
The full comparison is in our guide to epoxy vs polyaspartic for Collingwood garages. The honest version is this: an unheated bay in December is a workable job if the product is rated for the slab you have, and it is a failed floor if it is not. Booking the autumn window is still easier, and it is easier for scheduling reasons rather than chemical ones.
If you are booking
Give us the pour date if you know it, the size of the bay, and whether the building is heated. For a rental property, send the booking calendar: the constraint is almost never the floor, it is the fortnight the property is empty, and we would rather work backwards from that than propose a date you cannot take.