← All guides · Guide · Richard Lim

Gate maintenance on the Broadstairs salt-air belt

Gates fail earlier than the rest of the fence. They swing daily, they carry weight on two or three fixings, and on the Broadstairs coastal belt the salt air attacks the metal. Here is what to check, and what to do about it.

The failure order

Gates in Broadstairs typically fail in a predictable order: hinges rust and seize (year 3 to 5 on zinc-plated, year 15 to 20 on hot-dip galv), latch fails (year 5 to 8), gate post rots at ground level (year 8 to 15 for timber), gate timber warps or splits (year 10 to 20). Different gates fail at different points on the sequence, but that is the running order.

Hinge checks and replacement

Hinges are the item to watch. Twice a year, spray the hinge with WD-40 or an equivalent penetrating oil, wipe off the surface, and check for surface rust. Zinc-plated hinges within sight of the sea (Viking Bay to North Foreland) will start rusting within 12 months of fitting and will need replacement inside 5 years. Hot-dip galvanised hinges last 15 to 20 years in the same environment. Stainless steel is the premium answer for permanent installations.

Latch and lock maintenance

Standard gate latches (Suffolk, thumb-turn, ring latch) need annual attention: WD-40 the moving parts, check the return spring is still working, replace the striker plate if it has bent or worn. Locks (mortice-fit, deadbolt) benefit from a graphite lubricant rather than oil, because oil attracts salt and grit which makes the mechanism worse over time.

Gate post checks

Gate posts carry the entire weight of the gate on two hinge points. A timber gate post rotting at ground level is a serious problem: the gate starts to sag, the latch stops meeting the striker, and eventually the whole thing falls over. Screwdriver test the base of the gate post annually (see our post-rot guide). Concrete gate posts do not have this issue, which is why we default to concrete on any driveway gate we install on the coastal belt.

Sag and re-hang

A sagging gate is almost always fixable without a full replacement. Options in order of cost: tighten the hinge screws or coach bolts if they have loosened (£0, DIY, buys 6 to 12 months); replace hinges with a heavier spec on the same post (£80 to £160, buys 5 to 10 years); replace the gate post (£120 to £200, buys 10+ years); replace the gate as well (£300 to £800, buys 15+ years).

Automation-specific maintenance

Automated driveway gates have extra failure points: the motor drive, the wall-receiver, the safety photobeams, the ground loop. Annual service: check the motor grease, test the photobeams, replace the receiver battery if there is one, check the ground-loop resistance. A motor service on a Faac or Nice hydraulic system runs £120 to £200 and takes 90 minutes. Automating a manual gate that is already sagging is a bad idea: fix the mechanical problem first.

Salt-air specifics

On any gate within half a mile of the sea front, use hot-dip galvanised or A2 stainless coach bolts, not zinc plated. Zinc-plated bolts will rust and the head will snap off the shank inside three years. The extra cost of stainless hardware over zinc is about £15 per gate. Worth it.

When to just replace the gate

If the timber has warped so far the latch will not engage even with a re-hang, or if the gate has cracked through the frame, replacement is the right answer. Fixed price on a new gate after a photo-quote via WhatsApp. Standard pedestrian gate replacement including hardware and post checks runs £250 to £500 in Broadstairs.