What makes teak suited for outdoor use?

Teak contains natural oils and silica — mineral deposits in the wood cells — that make it resistant to moisture, rot and insects without any additional treatment. Its dense, interlocked grain limits water penetration at the cellular level, which is why the wood has long been used in marine decks and boat construction.

Does teak furniture need oiling?

Not to remain weatherproof — untreated teak stays structurally sound and resists moisture as it ages. Applying a purpose-made teak sealer once or twice a year will slow the natural greying process and preserve the honey-brown colour if that is preferred. Avoid generic teak oil products, which are typically linseed-based and can encourage mildew.

What is the silver-grey patina on teak?

It is the result of surface oils oxidising under UV light. The process typically takes five to twelve months outdoors depending on sun exposure and climate. The grey finish is not damage — the wood remains fully weatherproof and structurally sound beneath the surface change.

Are surface cracks in teak furniture a problem?

Fine surface cracks known as checking are a normal characteristic of teak outdoors. They are cosmetic and do not affect the structural integrity or weather resistance of the piece.

What is powder coating on aluminium furniture?

Powder coating is a finish applied electrostatically as a dry powder and then oven-cured, bonding it to the aluminium surface. The process produces a harder, more durable surface than paint — one that does not peel or flake under normal outdoor exposure — and is available across a wide range of colours and textures.

How do I maintain powder-coated aluminium outdoor furniture?

Periodic washing with mild soap and water is usually sufficient. No oils, sealers or specialist products are required. Aluminium does not rust, so there is no seasonal corrosion treatment needed.

Does aluminium outdoor furniture rust?

No. Aluminium does not rust. It resists corrosion in coastal and humid conditions, which is one reason it is widely used for outdoor furniture frames alongside stainless steel.

Which is lighter — teak or aluminium furniture?

Aluminium is substantially lighter than solid teak. A large solid-teak dining table is dense and heavy; aluminium-framed pieces can typically be moved alone and are easier to store seasonally or rearrange on a terrace.

Can teak and aluminium furniture stay outside year-round?

Both materials are suited to year-round outdoor use in most US climates. Teak needs no cover to remain structurally sound; aluminium powder-coated frames are equally weatherproof. Cushion fabrics and foam are the parts that typically benefit most from seasonal storage.

Which houses in your directory use teak?

Gloster and Barlow Tyrie are the most teak-focused houses in our directory. Tribù and others also work in teak, often combining it with aluminium or synthetic rope within the same collection.

Which houses in your directory use aluminium primarily?

Kettal builds a large part of its catalogue in powder-coated aluminium, including the Tilos line by Antonio Citterio. Gloster's Grid and 180 collections also use aluminium frames. Many houses work in both materials across different lines.

Does Premium Furniture sell furniture?

No. We are an editorial directory and journal. We map the houses and point you to the maker. We do not sell or publish prices.

Which market do you cover?

The United States. Availability and lead times are framed for US buyers, while the houses themselves are European.

How are the facts in this guide checked?

Materials, brand details and ageing characteristics are checked against the makers' own published information and reputable secondary sources before they go live. Anything we cannot confirm is left out.

Guides

Teak or aluminium for the terrace? A material guide for US buyers

Two materials dominate the outdoor furniture houses we cover. Here is what each does well, what it asks of you in upkeep, and where the difference shows on a real terrace.

By the deskLüneburg17 August 20265 min read

Walk the floor of any premium outdoor house and you will see two material families doing most of the work: teak and powder-coated aluminium. They answer different questions, ask different things of their owners, and look nothing alike on a terrace. This guide sets them against each other using what the houses we cover actually build with.

What makes teak suited to outdoor use

Teak contains a combination of natural oils and silica — mineral deposits in the wood cells — that make it resistant to moisture, rot and insects without any additional treatment. The oils act as built-in water repellents; the dense, interlocked grain limits water penetration at the cellular level. It is one of the few timbers used structurally in marine decks and boat construction for exactly this reason.

Gloster, registered in Lüneburg, Germany, with its main factory on Java, Indonesia, sources FSC-certified plantation teak and works it into much of its outdoor catalogue — Bora, Lima, Saranac and Fern among others. It also builds aluminium-framed collections including Grid, Maya and 180, which makes Gloster a useful single house through which to compare both materials at the same quality level.

Barlow Tyrie, the oldest British outdoor furniture maker, founded in 1920 in Braintree, Essex, built its catalogue on teak from government-certified Indonesian plantations and remains the most teak-identified house in our directory. It also makes pieces in stainless steel and powder-coated aluminium, but teak remains the signature material.

How teak ages

Untreated teak develops a silver-grey patina as its surface oils oxidise under UV light, a process that typically takes five to twelve months depending on sun exposure and climate. The transformation is not deterioration — the wood remains fully weatherproof and structurally sound once grey. Fine surface cracks called checking may also appear; these are cosmetic and do not affect the structural integrity of the piece.

Owners who prefer the original honey-brown colour can maintain it with a seasonal clean using a soft-bristle brush and mild soapy water, followed by a purpose-made teak sealer applied once or twice a year. What to avoid is generic teak oil — most such products are linseed-based and can encourage mildew rather than prevent it. Specific guidance from the maker is the right reference for any collection.

Teak asks very little of its owner. The question is whether you want the silver or the honey — both are maintenance states, not decay states.

Gloster Saranac outdoor lounge chairs in plantation teak and braided rope — Gloster Saranac — plantation teak and braided rope, designed by Mark Gabbertas

Kettal Tilos outdoor seating in powder-coated aluminium and hand-woven rope on a terrace — Gloster Saranac — plantation teak and braided rope, designed by Mark Gabbertas

The aluminium case

Powder-coated aluminium dominates a large part of the contemporary outdoor catalogue. The material does not rust, resists corrosion in coastal and humid conditions, and is substantially lighter than solid hardwood — a practical advantage on upper-floor terraces and for seasonal storage. Powder coating is applied electrostatically and then oven-cured, bonding it to the aluminium surface in a way ordinary paint cannot match; it does not peel or flake under normal outdoor exposure. The process also opens a wide palette of colours and textures — matte, hammered, high-gloss — giving designers more visual freedom than raw teak allows.

Maintenance compared

Teak benefits from a seasonal wash and, if the owner wants to preserve the original colour, an annual application of a proper teak sealer. Aluminium outdoor furniture needs only periodic washing with mild soap and water; no oils, sealers or specialist products are required. Neither material demands the seasonal stripping and resealing that softwoods or painted steel can require. Both live outdoors year-round in most US climates without structural risk.

Weight and handling

Solid teak is dense and heavy. A large teak dining table is not something most people move alone. That weight can be useful — it holds position in wind — but it is a real consideration on upper-floor terraces or in households that store furniture each winter. Aluminium collections, including stacking designs like Gloster's 180 by Henrik Pedersen, are built with easy seasonal handling in mind.

Choosing

For a buyer drawn to warm natural material and comfortable with periodic sealing, teak is the conventional long-term choice. For a buyer who wants a wide colour palette, lighter handling and truly minimal upkeep, powder-coated aluminium suits better. The houses in our directory span both — Gloster and Barlow Tyrie work in each — and the decision often comes down to the specific collection rather than the house. The profiles in our directory note each collection's material, which is the clearest guide to what you are actually choosing.

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