Choosing a gate you will still like in ten years

A garden gate does a lot of quiet work. It frames the view from the kitchen window, keeps the dog in, keeps the bins out of sight, and takes a knock every time someone shoulders through it with an armful of shopping. It also has to survive whatever your corner of the UK throws at it, from coastal salt spray to a fortnight of drizzle in February.

Timber, steel and aluminium all do the job beautifully, but they do it in different ways. The right choice usually comes down to three things: how much upkeep you genuinely want, how much security you need, and how heavy a gate you are willing to swing several times a day.

Timber: warmth you can feel

Nothing else looks quite like timber against a hedge or a brick wall. It weathers into a soft silver-grey if left alone, or holds a rich colour if you keep up with a stain or oil every year or two. It is also the easiest material to work with on site, so if your gate needs trimming to fit an out-of-true opening, a timber gate is forgiving.

• Softwood (pine, spruce) is the budget option. Pressure-treated softwood can last 15 years or more, but it will need re-treating every couple of years, particularly at the bottom rail where damp lingers.
• Hardwood (oak, iroko, sweet chestnut) costs more but shrugs off rot far better and looks superb with no finish at all. It is heavy, so plan for sturdy posts and substantial hinges.
• Cedar and larch sit in the middle: naturally durable, lovely grain, less prone to warping than pine.

Expect timber to move. A well-made gate with a braced frame will cope, but cheap unbraced panels sag — a diagonal brace running from the bottom hinge side up to the top latch side is what keeps a gate square. Budget roughly £80 to £250 for a softwood pedestrian gate and £300 to £900 or more for hardwood.

Steel: built for security

If your gate is really a barrier — a side entrance onto an alley, a driveway gate, anywhere you want to deter rather than simply divide — steel is hard to beat. A steel frame resists forced entry, and with solid infill panels or close-set bars it also gives privacy.

Look for hot-dip galvanised steel with a powder-coated finish. Galvanising protects the metal inside and out, including the cut ends and weld joints, and the powder coat gives you colour and a smooth finish on top. Without galvanising, a powder-coated steel gate can rust from the inside of a seam where you cannot see it.

Steel is the heaviest of the three. A single 900mm-wide steel pedestrian gate might weigh 40kg or more, which is fine on a good pair of adjustable hinges but demanding on the post. Concrete the post in properly, or bolt it to a sound masonry pier, and never hang a heavy gate on a post that is only spiked into the ground.

Costs typically run from around £400 for a simple galvanised frame to well over £1,500 for a large, ornate or automated gate.

Aluminium: rust-free and easy going

Aluminium is the material people choose when they have finished with maintenance. It does not rust, it does not need treating, and a powder-coated finish will hold its colour for years with nothing more than a wipe down with soapy water.

It is also light — roughly a third of the weight of steel for a comparable gate — which makes it a good match for self-closing hinges, automation arms and anyone with weaker wrists. Because it is light, it needs less beefy posts, though it still needs posts that are firmly fixed.

The trade-off is stiffness. Aluminium is softer than steel, so a cheap thin-walled gate can flex and rattle. Ask about the wall thickness of the frame and look for internal bracing or a welded, rather than bolted, construction. Well-made aluminium gates usually cost between £350 and £1,200.

Cost, weight and upkeep compared

• Timber: lowest initial cost, moderate weight, annual or biennial treatment, lifespan 10–25 years depending on species.
• Steel: highest cost and weight, best security, minimal upkeep beyond touching up chips, lifespan 25 years or more when galvanised.
• Aluminium: mid-range cost, lightest, near-zero upkeep, lifespan 20–30 years.

Over a decade, a cheap softwood gate plus treatment and eventual replacement can cost more than one aluminium gate bought once. That said, if you love the look of timber and enjoy a Saturday with a brush, nothing else feels the same.

Fittings, posts and everyday access

Whatever the material, the details decide whether the gate still swings sweetly in five years. Leave about 50mm of clearance beneath timber gates for airflow and to stop the bottom rail sitting in puddles; steel and aluminium can sit a little lower but should never drag. Use adjustable hinges so you can lift a sagging gate later without digging out the post.

Check height rules before you build. In England and Wales, a gate or fence beside a highway generally needs planning permission above one metre, and above two metres elsewhere, so an alley gate next to a pavement may need consent even though the same gate in a back garden does not.

Finally, match the gate to your fencing for a coherent look, and consider a self-closing hinge if children or pets use the opening. A gate that closes itself, latches firmly and needs nothing from you but the occasional wipe is, in the end, the one you will be happiest with.