Timber fence maintenance

What is normal and not a problem

Some of the things people report as faults are simply what timber does outdoors.

• Colour change. New treated pine has a green or light tan cast that fades. Uncoated timber, pine or hardwood, greys off over time.
• Seasonal movement. Timber takes up and gives off moisture, so gaps between palings can tighten and open through the year.
• Surface checking. Fine surface cracks along the grain are normal in exterior timber.
• Variation between palings. Especially in hardwood, where colour and grain differ paling to paling. That is the character of the material.

What is worth acting on

These are the things that get worse if you leave them.

• Soil, mulch or garden beds built up against the bottom of the fence, holding moisture against the timber
• Sprinklers or downpipes discharging directly onto the fence
• Climbing plants and heavy vines loading the fence and trapping moisture
• Palings or rails that have come loose, because the load then transfers to what is left
• A gate that has started to drop, which puts strain on hinges and posts
• Any movement in a post, which is the one that matters most

An annual once-over

Ten minutes once a year catches almost everything worth catching.

• Walk the fence and push on it at post height, looking for any post that moves
• Look at ground level for soil or mulch banked against the timber, and clear it back
• Check for loose palings and loose or protruding fixings
• Open and close each gate, checking it swings clear and latches properly
• Cut back planting that is growing hard against or through the fence
• Check that water is not being directed onto the fence by sprinklers or downpipes

Coating: paint, stain or nothing

All three are legitimate choices, and they are choices about appearance and upkeep rather than right and wrong.

Leaving it uncoated means the fence greys off naturally and you do nothing. Coating it holds a colour and means recoating at some point.

New treated pine is not always ready to coat immediately, because freshly treated timber can hold moisture and coating too early works against the finish. If you plan to paint a new fence, raise the timing at the site measure.

We do not publish coating lifespans or repainting intervals. How long a finish lasts depends on the product, the preparation, how exposed the fence is and the weather it sees, and any number we printed here would be wrong for plenty of fences.

Ground contact is the thing that shortens a fence

Timber fails fastest where it stays wet. On a fence that means ground level, which is why post rot at ground level is the classic failure.

The single most useful maintenance habit is keeping the base of the fence clear. Garden beds, mulch, stacked material and heavy planting against the bottom of a fence all hold moisture exactly where you least want it.

Treated pine and hardwood need the same attention

Hardwood is a naturally durable, denser timber, and treated pine is pressure treated for exterior use. Both are made for the job, and both still sit outdoors in the weather.

The maintenance habits are the same for either: keep the base clear, keep water off it where you can, keep planting under control, and deal with loose components before they load something else.