Hardwood driveway gates are among the most durable external fixtures you can install on a Kent property. Iroko gates that were hung in the 1990s are still in sound condition across the Weald. European oak gates on Canterbury conservation area properties have decades of service ahead of them. Accoya gates installed in coastal East Kent carry a 50-year manufacturer guarantee that most homeowners will never need to test. But all of this longevity depends on one condition. The gates need to be looked after.
The maintenance is not complicated and it is not expensive. It involves an annual inspection, a treatment application every one to two years for oiled timbers, and prompt attention to any damage or deterioration before it has a chance to worsen. This guide covers exactly what to do, when to do it, and how the three main timber species used on Kent gates differ in their maintenance requirements.
The Annual Spring Inspection
The best time to inspect your wooden gates is in early spring, after the winter weather has done its worst and before the growing season starts. Walk up to the gate and look at the whole structure from a few metres away first. Is the gate hanging level or has one leaf dropped? Are the gaps between the gate and the posts consistent or has something shifted? Does the gate close cleanly to the latch point or does it need forcing?
Then look more closely. Check the surface finish. Has the oil or stain thinned out, particularly on the top edge and the end grain of the boards, which are the first places to lose protection? Are there any areas where the timber has turned grey, which indicates the surface treatment has broken down and the timber is weathering? Are there any splits or surface checks in the boards, particularly on the south-facing side that gets the most sun exposure? Is there any green algae or moss growth on the bottom rail or the lower boards, which indicates persistent dampness?
Check the ironmongery. Are the hinges tight or is there play? Can you lift the gate on the hinge side? If there is movement, the hinge pins or the hinge bolts may need tightening or replacing. Check the latch and lock mechanism. Does it operate smoothly? Has moisture affected any of the metal components? On hot-dip galvanised ironmongery, the zinc coating should still be intact. On stainless steel fittings, check for any discolouration at the bolt holes that might indicate the start of crevice corrosion, particularly on coastal Kent properties.
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How to Oil Iroko Gates
Iroko is the most common hardwood for Kent residential gates and it responds well to a penetrating oil treatment. The purpose of oiling is not to waterproof the timber, which iroko does naturally through its own oil content, but to maintain the surface appearance, prevent surface checking from UV exposure, and keep the timber looking warm rather than allowing it to grey.
Use a penetrating hardwood oil, not a surface varnish or paint. Osmo UV Protection Oil, Sikkens Cetol HLS Plus, and Owatrol Textrol are all widely used on iroko gates by Kent timber gate specialists. Teak oil from a hardware store also works but may need more frequent reapplication.
Apply in dry weather when the timber surface is dry and the temperature is above 10 degrees. Lightly sand any areas where the previous coat has broken down or where grey weathering is visible, using 120-grit sandpaper. Brush off the dust. Apply the oil with a wide brush, working it into the end grain, the top edge, and any joints first, as these are the areas that absorb moisture fastest. Then coat the flat faces of the boards. One coat is usually sufficient if you are maintaining an existing finish. Two coats if you are restoring a gate that has been left too long.
The treatment interval for iroko in Kent conditions is every 18 to 24 months. South-facing gates that get more sun exposure may need attention at the shorter end of this range. North-facing gates and gates sheltered by trees or buildings can go longer between treatments.
How to Maintain European Oak Gates
Oak is a more complex timber to maintain because homeowners have two valid choices. You can oil it to maintain a warm brown appearance, following essentially the same process as iroko. Or you can leave it untreated and allow it to weather naturally to a silver-grey patina. Both approaches are legitimate, and the choice depends on the look you want and the setting of the property.
If you choose to oil, the process is the same as for iroko but with one difference. Oak contains tannins that react with water and can produce dark staining on adjacent masonry if rainwater runs off untreated oak onto pale stone or render. Oiling the oak reduces this tannin leaching significantly. If your gate is hung next to pale brickwork or rendered pillars, oiling is the better choice for the first two to three years until the tannin levels in the surface timber have reduced.
If you choose the natural weathering route, the gate still needs an annual inspection for structural integrity. Check joints, check for splits that go through the full board thickness (surface checks are normal and not a concern), and check that the ironmongery is secure. The silvering process takes 18 to 36 months to reach a consistent colour across the whole gate. During this period the gate may look patchy as different faces weather at different rates. This is normal and resolves itself.
How to Maintain Accoya Gates
Accoya is the lowest-maintenance timber option for Kent gates, and this is one of the main reasons it is specified. The acetylation process that modifies the timber at a cellular level means it absorbs very little moisture, does not swell and shrink with seasonal humidity changes, and holds paint and stain finishes far longer than conventional timber.
If your Accoya gate is painted, the paint finish will typically last 8 to 10 years before it needs refreshing, compared to 2 to 4 years for paint on conventional softwood. If it is oiled or stained, the treatment interval is 4 to 6 years rather than the 18 to 24 months that iroko requires. The annual inspection described above still applies, but the hands-on maintenance is significantly less frequent.
For Accoya gates on coastal Kent properties between Whitstable and Folkestone, the maintenance advantage is most pronounced. Salt air that would degrade a conventional softwood gate within a few years has minimal effect on Accoya because the timber simply does not absorb the salt-laden moisture in the way that untreated wood does.
Dealing with Damage and Deterioration
Surface checks (small cracks that follow the grain on the face of the board) are normal on all hardwood gates and do not affect structural integrity. They are caused by the surface of the timber drying faster than the interior, and they typically open in dry weather and close in damp weather. They do not need repair. Filling them with a sealant actually traps moisture and makes the problem worse.
A split that goes through the full thickness of a board is different and should be addressed. Small splits can be stabilised with exterior-grade wood glue and a clamp. Larger splits may require the affected board to be replaced by a joiner. The sooner a through-split is caught, the simpler and cheaper the repair.
Rot on a hardwood gate is unusual and indicates either a species that should not have been used (such as untreated softwood), a gate that has been in standing water at the base for extended periods, or a structural joint that has opened and allowed moisture to penetrate the end grain continuously. If rot is present, the affected section needs to be cut out and replaced. A gate specialist or joiner can do this without replacing the entire gate in most cases.
Vehicle damage to a gate leaf (a clipped edge, a dented board) should be repaired promptly because a break in the surface exposes untreated timber to moisture. Sand the damaged area, treat with a preservative end-grain sealer if raw timber is exposed, and re-oil or repaint.
Maintaining the Automation on a Wooden Gate
If your timber gates are automated, the gate maintenance and the motor maintenance are separate tasks but should be coordinated. Book the annual motor service at the same time as your annual gate inspection. The engineer who services the motor can check the hinge condition, the gate weight (which changes as timber absorbs or releases moisture seasonally), and the motor torque settings at the same time. A timber gate that has absorbed moisture over winter is heavier than the same gate in a dry summer, and the motor torque may need seasonal adjustment on some systems.
Getting Professional Help With Timber Gate Maintenance
If your gates need more than an oil treatment and a visual check, or if you would rather have a professional handle the annual maintenance, the gate specialists in our Kent network offer service packages that cover both the automation and the gate structure. Submit your details and we will connect you with an installer who covers your area.
