Teak vs. Acacia Outdoor Furniture: Which Wood Lasts

Walk through any patio furniture showroom and you will find two hardwoods fighting for the same shelf. One is labeled teak and carries a premium. The other is labeled acacia, often with the words "teak finish" printed somewhere nearby. They look similar enough that shoppers routinely assume the difference is marketing.

It is not. Teak and acacia are different genera with different growth habits, different cell structures, and different behavior once they sit through five years of rain and sun. Teak has a long record of surviving outdoors with almost no help. Acacia is denser and harder in most of the species used for furniture, costs substantially less, and asks more of you in the first two years.

Which one belongs on your patio depends less on prestige and more on three things: how much weather your furniture sees, how much weight you want to move, and whether you are willing to maintain a finish. That is the comparison worth making, and it is what follows.

What Teak Actually Is

Teak is the wood of Tectona grandis, a hardwood native to South and Southeast Asia. Commercial plantations now supply most of the world's furniture-grade teak, with mature trees taking roughly 20 to 30 years to reach harvest size.

Two things make teak unusual. First, the heartwood carries natural extractives — compounds in the tectoquinone family — that suppress fungal growth and deter termites. This is why teak has centuries of marine and outdoor use behind it, and why untreated teak benches from the 1950s are still sitting in gardens. Second, teak has relatively low movement in service: it swells and shrinks less across the grain than many hardwoods when humidity swings. That dimensional stability is the quiet reason teak furniture stays tight at the joints.

Published density figures for teak heartwood cluster around 600 to 700 kilograms per cubic meter, or roughly 37 to 44 pounds per cubic foot. Janka hardness figures commonly cited land near 1,000 to 1,150 pounds-force. Those numbers are respectable but not extreme — teak is not a hard, glassy wood. It is a stable, chemically protected one.

The tradeoffs are real too. Teak is expensive because the tree is slow and the supply is constrained. Old-growth sourcing has a troubled history, which is why certification matters more for teak than for almost any other furniture wood. It is also softer than acacia under a chair leg or a dropped tool, so it dents more readily.

What Acacia Actually Is (and Why It Looks Like Teak)

"Acacia" is not one wood. It is a genus of well over a thousand species, and the furniture trade draws on a handful of fast-growing ones, most commonly Acacia mangium, Acacia auriculiformis, and hybrids of the two. These grow quickly in plantation settings across Southeast Asia, which is why the supply is abundant and the price is lower.

Acacia heartwood runs from pale gold to deep reddish brown, with a more dramatic grain pattern than teak — more contrast between earlywood and latewood, more figure, occasionally more visible knots. Left unfinished, it weathers toward a warm brown-gray rather than the pale silver that teak goes.

Because the color range overlaps with teak's and the price is friendlier, a large share of acacia furniture is sold with a stain or a tinted oil described as a "teak finish." That is a color description, not a species claim. If the product page says "teak finish," read it as "stained to look like teak" until the species is stated explicitly.

Acacia is dense. Density figures for furniture-grade acacia commonly run 600 to 800 kilograms per cubic meter, and Janka hardness figures in the published literature often land well above teak's, in the 1,700 to 2,300 pounds-force range depending on species and test source. Treat those numbers as directional rather than exact, because acacia species vary widely and testing methods differ. The direction is consistent though: acacia is harder and heavier than teak.

Heavier is not automatically better. A heavier chair is harder to drag across a deck, harder to move alone, and more expensive to ship. It also means more load on the frame joints when someone drops into the seat.

Dimensional stability is where acacia gives ground. Dense tropical hardwoods with interlocked grain can move noticeably with moisture, and thin sections — slats, table aprons, chair backs — are where that shows up first. Well-made acacia furniture is dried carefully and designed with room for movement. Cheap acacia furniture is not, and that is the origin of the "acacia cracks" reputation. The species is not the problem; the drying and the joinery are.

Head to Head: Density, Hardness, and Movement

Here is the comparison in the form most useful before buying.

Read the table this way: acacia wins on hardness and price, teak wins on stability and neglect tolerance. Neither wins on looks, because that is a preference.

One row deserves emphasis. The "relative cost" gap between the two is not a small markup. It reflects a 20-to-30-year growth cycle versus a fast plantation crop, and it is the single biggest reason a shopper ends up choosing acacia. Whether that gap is worth paying depends entirely on how the furniture will live.

How Each One Ages Outdoors

Both woods gray out. This surprises people who expect teak to stay honey-colored forever.

Bare teak left in sun and rain oxidizes to a pale silver-gray over roughly one to two seasons. The surface fibers weather away slowly, the extractives at the surface wash out, and what is left is a soft gray that most designers consider the point rather than a problem. Teak that is oiled annually keeps more of its original color, but it also needs re-oiling on a schedule and will look patchy if you skip a year.

Acacia behaves similarly but with a warmer result. Bare acacia goes toward a brown-gray rather than silver, and because the grain has more contrast, the weathering looks more uneven in the first year. Stained or tinted acacia is a different story: the stain wears through at high-touch points — armrests, table edges, the tops of chair backs — before it wears anywhere else. That produces a mottled look that is difficult to correct without sanding the whole piece back.

If you want the furniture to keep its original color, both woods need an annual oil application. If you are happy with gray, both can be left alone, and teak will look more intentional doing it.

Sun exposure also drives checking — small surface cracks along the grain. Teak checks less because it moves less. Acacia checks more on end grain and on thin slats, especially in the first two summers while it is still equilibrating to your local humidity. Checking is usually cosmetic, not structural, but it is the thing buyers notice and complain about.

Water, Mold, and the Chlorine Question

Outdoor wood lives with water. The differences here are about how much attention each wood needs after rain.

Teak sheds water well because of its density and its extractives, and it tolerates standing water in the grain far longer than most hardwoods before mildew establishes. Acacia is dense enough to resist soaking but more prone to surface mildew in humid, shaded conditions, particularly on the underside of tables and the backs of chairs where air does not move.

Mold and mildew on either wood are a surface problem, not a structural one, in the early stages. A soft brush, mild soap, and a dilute vinegar solution handle most of it. Avoid chlorine bleach on bare wood; it strips the surface and leaves a patchy gray. If you use a commercial outdoor wood cleaner, test it on an inconspicuous spot first, especially on stained acacia where the color is a coating rather than the wood itself.

Poolside is its own case. Chlorinated water and splash-out leave mineral and chlorine residue that dries into a dull film, and the constant wet-dry cycle is harder on any finish than plain rain. Teak's stability helps here, but placement helps more: furniture a few feet back from the splash zone lasts noticeably longer than furniture at the coping. Our guide to poolside furniture that survives chlorine and sun covers the placement and rinse routine in detail.

Hard water is the other quiet enemy. Sprinklers that hit furniture leave calcium spots that look like mildew but do not brush off. A diluted vinegar wipe, followed by a plain water rinse, removes them from both woods.

Where Each One Makes Sense

The honest answer is that both woods are appropriate for outdoor furniture and neither is universally better. What changes is the setting.

Choose teak when the furniture will sit in full weather year round without a cover, when you want to skip maintenance and accept graying, when the pieces are large and heavy enough that moving them is a two-person job anyway, and when the furniture is meant to be the last set you buy for that spot. Teak's stability also matters most on pieces with lots of joinery — extension tables, folding chairs, anything with moving parts.

Choose acacia when the furniture sits on a covered porch or under a pergola, when you want a deeper color and more visible grain, when you will actually oil it once a year, and when the budget difference is the difference between furnishing the whole patio and furnishing half of it. Acacia's hardness is a real advantage for dining tables that get used hard — keys, plates, kids doing homework.

Choose neither, honestly, when the furniture will sit in splash range of a pool, in a spot that never dries, or on a surface that holds water against the legs. In those conditions the wood is not the deciding variable; drainage and placement are, which is the subject of our comparison of deck versus paver surfaces under patio furniture.

Climate shifts the calculation too. In the desert Southwest, both woods dry and check more; oiling matters more. In the humid Southeast, mildew matters more and airflow under the furniture matters more. In the Northeast, freeze-thaw cycles punish any water that gets into end grain, so sealed end grain and raised feet are worth more than species choice.

Care That Actually Matters for Both

The maintenance routine for teak and acacia is nearly identical, which is convenient. Four habits cover most of it.

Wash, do not blast. Mild soap, warm water, a soft brush. A pressure washer will raise the grain, strip a stain, and drive water into joints. If you must use one, keep it on the lowest setting, keep the nozzle moving, and never aim at a joint line.

Rinse after pool or sprinkler contact. Chlorine and hard water both leave residue that dulls the surface. A quick rinse with a hose and a towel dry does more for appearance than any product.

Oil annually if you want color, skip it if you want gray. One thin coat of a penetrating wood oil, applied to clean dry wood in spring, is the standard. Wipe off the excess within 30 minutes; leaving oil pooled on the surface produces a sticky film that attracts dirt. Do not oil in direct sun or on wood that is hot to the touch.

Lift the feet off the ground. Water wicks into end grain and sits there. Rubber or plastic feet, or small shims under the legs, extend the life of both woods more than any finish. This matters most on concrete and stone, which hold moisture against the wood.

For a broader treatment of frame materials, fabric behavior, and how wicker fits into the picture, our patio furniture materials guide covers the categories that sit alongside these two woods.

How to Read a Product Page Before You Buy

Product pages for wood furniture are uneven. Five details separate a listing that tells you something from one that tells you nothing.

Species, stated plainly. "Acacia" or "Tectona grandis" or "teak." If the page says only "solid wood" or "teak finish," you do not know what you are buying. A "teak finish" on an acacia piece is fine, but it should be labeled as such.

Dimensions and weight together. Weight tells you density. A dining table described as acacia at 72 inches long should weigh substantially more than the same table in teak. If the listed weight looks light for the size, the piece may be hollow-core or thinner than it appears.

Joinery description. Look for mortise-and-tenon, dowels, or through-bolts. Staples and screws into end grain are the failure points on inexpensive outdoor wood furniture, regardless of species.

Hardware material. Stainless steel or hot-dipped galvanized. Plain zinc-plated screws rust out in two seasons and stain the wood around them.

Finish disclosure. Oil, water-based sealer, or bare. A water-based film finish on acacia looks good for a year and then peels in sheets if moisture gets under it. Penetrating oil fails more gracefully.

If a listing is missing most of these, that is information too. It usually means the piece was specified to a price.

Browse by category rather than by wood: patio seating for chairs, sofas, and sectionals, and outdoor tables for dining and coffee tables. Filtering by form first and then comparing species within the shape you need is a faster path than starting from the wood and hunting for something that fits.

Frequently Asked Questions

Is acacia good for outdoor furniture? Yes, when it is properly dried and well joined. Acacia is dense and hard, and it holds up outdoors in most climates. The failures people report are usually about inadequate drying, thin sections, or poor joinery rather than the species itself.

Does acacia wood rot outdoors? Acacia has moderate to good natural rot resistance, though less consistently than teak and with variation between species. The sapwood is far less resistant than the heartwood. Furniture that sits in standing water or has wet end grain will eventually fail regardless of species.

Teak vs acacia: which lasts longer? Teak generally lasts longer in untreated, fully exposed conditions, mainly because of its natural extractives and dimensional stability. A well-made, annually oiled acacia set on a covered patio can last a very long time too. Exposure and construction matter as much as species.

Will acacia turn gray like teak? It weathers, but toward a warm brown-gray rather than teak's pale silver. Stained acacia also wears at high-touch points before it wears elsewhere, which reads as mottling rather than an even patina.

Is "teak finish" the same as teak? No. "Teak finish" describes a color, usually a stain or tinted oil on another species, most often acacia. It is a legitimate product as long as the actual species is disclosed.

Can I use teak oil on acacia furniture? Yes. A penetrating outdoor wood oil works on both. Apply thinly to clean, dry wood, wipe off the excess within about 30 minutes, and avoid applying in direct sun.

Why does acacia furniture crack? Usually because the wood was dried too quickly or too unevenly before assembly, or because thin sections were constrained by joinery that did not allow movement. Surface checking along the grain is common and usually cosmetic; cracks that open at joints are a construction issue.

Is acacia heavier than teak? Generally yes. Acacia used in furniture commonly runs denser than teak, so a same-size piece weighs more. That is an advantage for stability in wind and a disadvantage when you have to move it.

The Short Version

Teak and acacia both belong outdoors, and the choice between them is less about quality than about exposure and maintenance appetite. Teak is the more stable, more self-protecting wood and costs accordingly. Acacia is harder, heavier, more dramatically grained, and much less expensive, provided the piece is properly dried and joined.

If the furniture will sit uncovered through every season and you would rather not think about it, teak earns its premium. If it will sit on a covered patio or under a pergola and you will oil it once a spring, acacia delivers most of the durability for a fraction of the cost.

Whichever way you go, the same four habits — gentle washing, rinsing off chlorine and hard water, annual oiling if you want color, and lifting the feet off the ground — do more for longevity than the species name on the label. Teak vs acacia outdoor furniture is a real decision, but it is a decision you can revisit every spring with a brush and a bottle of oil, which is a comforting thing for a purchase this size.