Terrace railings compared: timber, metal balusters or glass

Timber rail — a warm look, but repeat maintenance

Timber balustrade suits a wooden house best, and it is the cheapest to build if you are handy with a saw. Pine or spruce needs oiling or staining roughly every two to three years to keep water out of the end grain, more often on the south side where sun bleaches the finish. Thermally treated timber or larch lasts longer between coats and copes better with standing damp.

The weak points are the same ones you would expect on any outdoor timber: joints where water collects, post bases near the deck boards, and any spot where two pieces of wood sit flush against each other without a drainage gap. Left unmaintained, rot usually shows first at the bottom of the posts rather than the rail itself.

Timber does nothing special against wind. Standard spaced balusters let a good deal through, which is often exactly what you want on a sheltered terrace, but it will not calm a terrace that catches wind off open ground or the sea.

Metal balusters — durable, but it will not stop the wind

A steel or aluminium baluster railing, powder-coated in a colour to match window frames or a roof, needs very little attention: an occasional wash and a check that fixings are still tight is usually enough. It suits panel flats, new developments, and any house with a plainer, more contemporary facade.

Galvanised or powder-coated steel handles Estonian winters without trouble, and aluminium never rusts, though a knock that chips the coating on steel is worth touching up before rust gets under it. Welded joints are the thing to have checked occasionally, since movement over the years can loosen a fixing plate.

Like timber balusters, a metal rail is mostly open, so it defines the edge and stops a fall without doing much for wind. If wind is the main complaint about the terrace, spaced balusters of any material are not the fix.

Glass railing — the calmest terrace, but it needs cleaning

Glass panels, either full-height or as an infill between posts, block wind almost completely while keeping the view open, which makes a real difference on an exposed balcony or a terrace facing open ground. It is also the material that changes a house's character most: glass reads as modern even on an older building, which suits some houses and sits oddly on others.

Toughened safety glass is the standard here and copes with the climate well, but it shows every water spot, pollen smear and bird mark, and a terrace near trees will need wiping down more often than the owner expects when they choose it. Frameless glass also needs its fixing hardware checked periodically, since it carries more load per fixing point than a baluster rail.

Glass is the most expensive of the three per metre, and any repair after impact damage means replacing a whole panel rather than a single spindle.

What we would choose for a typical Tallinn terrace

For a wooden house in Kalamaha or Nõmme, we would usually stay with timber or a timber-and-metal combination, since it matches the building and the maintenance rhythm is one most owners of an older house are already used to. For a panel flat balcony or a new development, powder-coated metal balusters are the practical default: low upkeep, a clean look, and no surprises.

Glass earns its cost on a terrace where wind is a genuine daily problem, or where the view is the whole point of having a terrace at all. It is a poorer choice where cleaning access is awkward, for instance a terrace with panels on more than one side, or where children's football or garden tools are a realistic hazard.

We build and fit decking and terraces from 90 € per job, and where the railing on an existing terrace is loose, rotten at the posts, or needs a section rebuilt rather than replaced entirely, that is a stair and railing repair job from 140 €, with a fixed quote once we have seen photos or measurements.

Three things that matter more than style

Style is the part people decide on first, but three practical questions usually matter more once the railing is up: how exposed the terrace is to wind and rain, how much time the owner actually wants to spend on maintenance, and what the local building regulations or the apartment association allow, particularly on a shared balcony.

Height and gap rules are also worth confirming before you commit to a material, since they affect how balusters can be spaced and whether a solid panel needs a different fixing approach than an open rail. Check with the city or the building register, or with an apartment association if the terrace is shared, rather than assuming a rule from another building applies.

• Exposure: an open, windy terrace argues for glass over spaced balusters
• Maintenance appetite: timber needs the most regular attention, metal and glass the least
• House style: match a wooden house with timber, a plainer facade with metal or glass
• Shared buildings: confirm height and gap rules with the association or city before ordering
• Existing structure: a rotten or loose railing is often a repair job, not a full replacement