Your timber fence went grey. That's weathering, not death.
Grey timber is not dying — the sun has broken down the lignin in the top fraction of a millimetre, leaving a layer of dead grey surface fibres. A proper wash strips that layer and brings the fence's real colour back. A re-oil afterwards holds it. Washing cannot fix rot or splits; it just tells you honestly which one you have.
Grey is sunburn, not disease
UV light breaks down lignin, the natural glue that binds wood fibres together. It only reaches the surface — a layer thinner than a coat of paint — but that layer is all you see. The fibres in it die, loosen and turn silver-grey. Cut into any grey paling and the timber a millimetre down is the same colour it was the day the fence went up. The fence is not failing. Its surface is sunburnt.
This matters because the fix for a surface problem is a surface treatment. You do not need a new fence, and you usually do not need to sand the old one back to bare timber. Sydney sun is relentless — north- and west-facing runs grey fastest, and hardwood and treated pine both do it. Grey is the default end state of unprotected timber outdoors. It is also, conveniently, reversible.
The wash that brings the colour back
Restoring the colour means lifting that dead grey layer off without tearing up the sound timber underneath. That is a washing job, not a blasting job. High pressure held close will strip the grey, but it also furs the surface, gouges the softer growth rings and leaves wand stripes you can read from the street. The right approach is lower pressure, the right solution, and a rinse that carries the dead fibres away instead of driving water deep into the boards.
Done properly, the result surprises people. Merbau comes back red-brown. Treated pine comes back honey-green. Hardwood palings show grain that has been invisible for years. It is not a stain or a coating — it is the fence's own colour, uncovered. If you want proof before committing, scrub one paling by hand with a stiff brush and a bucket. The line between grey and real colour makes the case on its own.
Oil is how you hold it
A washed fence starts greying again the day it dries, because the sun has not gone anywhere. If you like the restored colour, oil it while the timber is clean and dry. A penetrating exterior oil with UV blockers slows the greying right down and beads water instead of letting it soak in. Skip film-forming coatings on an older fence — when they fail they peel, and then you are sanding after all.
Or don't oil it. Some owners like silver-grey — it suits certain gardens and it asks nothing of you. That is a legitimate choice, not neglect. The point is that it should be a choice. A wash resets the fence to its real colour and lets you decide from there: oil it and hold the tone, or let it silver evenly this time, without the streaks and grime the old grey carried.
Street side first
If you are staging the work, start with the run the street sees. The front fence frames every photo of the house, and it is the first thing a visitor, a valuer or a buyer walks past. It usually takes the most sun and the most road film, so it shows the biggest change for the money. Side and rear boundaries can wait a season without anyone noticing. The street side cannot.
Selling is the sharpest version of this. A grey, streaked front fence reads as deferred maintenance before anyone reaches the door, and buyers extrapolate from what they can see to what they cannot. A washed fence — oiled or honestly silvered — reads as a place that has been looked after. It is one of the cheaper lines on a pre-sale exterior list, and one of the most visible.
What washing cannot fix
Washing removes grey, grime, mould and cobwebs. It does not fix rot — and it will find it, because a soft paling that was hiding under uniform grey becomes obvious once the colour returns. It does not close splits, straighten leaning posts or replace rusted fixings. If the fence has structural problems, you need a fencer first and a wash second. We will say so rather than wash a fence that needs a carpenter.
Fence washing is quoted per job — length, height, timber, growth and access all move the number, so a flat rate would be a guess. The instant quote is not a guess: answer a few questions and it returns a firm, bookable price in about 60 seconds, and that price holds unless the place is materially different from what you described. Add the house wash or driveway on the same visit and the bundle saves 5-15 per cent.