Outdoor Furniture Materials Head-to-Head: Teak, Aluminum, Wicker, Steel, Poly

Most patio-material comparisons stop at four lanes and skip the one holding up half the porches in America: steel. This head-to-head scores all five — teak, aluminum, resin wicker, steel and wrought iron, and HDPE poly — on the axes that decide the ten-year bill: corrosion physics, upkeep hours, weight, and climate fit. Our four-lane comparison carries the buying-lane verdicts; this page is the materials lab.

Method: published materials specs, manufacturer care documents, and multi-season owner reviews across climates. The owners already ran the weathering experiment — in numbers.

The corrosion map, because chemistry decides this category

Aluminum cannot rust — it oxidizes into a stable skin and stops. Steel rusts progressively — once moisture reaches bare metal, oxidation undercuts the coating from inside. That single difference explains most patio-furniture failure stories: powder coating protects steel only until the first deep scratch or weld crack, then climate decides how fast the rust travels. Wrought iron — the classic heavy steel lane — survives generations in dry climates precisely because dry air slows that clock to a crawl, and dies in three coastal winters for the same reason in reverse.

Wood rots by moisture and biology. Teak resists both with natural oils — boat-deck wood — while budget hardwoods like acacia depend entirely on their maintenance schedule. Poly and resin do not corrode or rot at all; their enemies are UV (solved by stabilizers in honest products) and heat gain in dark colors.

The five lanes, scored

Teak — the heirloom. Decades of life, zero structural weather risk, and a chore: oil yearly to keep the honey color, or accept silver-grey patina. Upkeep: ~2–4 hours a year oiled, zero if patina-accepted. Heavy enough for wind. The cost is the entry price — real teak starts beyond most set budgets.

Powder-coated aluminum — the default. Rust-immune, light, mid-priced, huge style range. Upkeep: a rinse, plus a coating inspection at welds and feet. The trades: hollow frames dent, and lightness means wind moves it — the one climate where aluminum is the wrong answer is the windy bluff.

Resin wicker — the frame gamble. The weave (resin wicker, HDPE strand in honest products) handles weather fine; the frame under it decides everything. Aluminum-framed wicker is legitimate mid-tier furniture. Steel-framed wicker rusts invisibly inside the weave — the material lane where the hidden spec does the most damage.

Steel and wrought iron — the conditional classic. Heavy (wind-proof), formal-capable, and cheap in its tube-steel form. In dry climates, powder-coated steel and wrought iron are honest decade furniture with one habit: touch up scratches the season they happen. In wet or coastal climates, the maintenance debt compounds — every scratch is a rust seed, and the ten-year bill usually exceeds aluminum's entry premium.

HDPE poly — the zero-maintenance lane. Poly lumber does not rust, rot, peel, or care about snow; color runs through the board and care is a hose. Costs: real weight (a feature in wind, a chore in rearranging), casual styling, and heat gain in dark colors. The direct-value lane changed its price story — Serwall sells poly sets at prices the name brand charges per chair, scored in our full review.

The hardware footnote that outranks the frame

Owner reviews are full of "aluminum" sets streaked with rust — from steel bolts. Mixed metals plus coastal moisture also invites galvanic corrosion where dissimilar metals touch. The checklist item: stainless or coated hardware stated in the listing, and on any set, a five-minute yearly walk of the fasteners. It is the cheapest maintenance in the category and the most skipped.

Upkeep hours per year, tallied honestly

• Poly: ~0 (hose)
• Aluminum: ~1 (rinse, weld check)
• Resin wicker on aluminum: ~2 (cushion care dominates)
• Steel/wrought iron: ~2 dry climate, 5+ wet (scratch patrol is the difference)
• Teak: 0 patina-accepted, 2–4 oiled

The ten-year bill, sketched

Poly and aluminum run the flattest cost curves — entry price and done. Teak runs highest-entry, lowest-replacement, and wins the decade only for owners who stay the course. Dry-climate steel is honest value; wet-climate steel re-buys itself once or twice, which makes the cheapest lane the most expensive one exactly where it sells most. Steel-frame wicker compresses that same story into three years.

Match the material to the climate, the hardware to the material, and the maintenance promise to your actual honesty — that is the whole discipline. The under-$1,500 set ranking applies it to real budgets, and the teak vs poly head-to-head settles the two long-life lanes directly.

Covers and storage: the lane multiplier

A $100 cover-and-storage plan changes every lane's ten-year math except poly's. Breathable fitted covers (waterproof tops, vented sides — sealed plastic traps the condensation that mildews cushions) add years to aluminum, steel, and wicker sets; a deck box keeps cushion foam dry through the week it rains sideways; and dry off-season storage is the difference between wet-climate steel being a countdown or a keeper. Poly is the exception that proves the rule — it needs none of it, which is precisely what its price premium over tube steel is buying. Whatever the lane, budget covers on day one: year-three insurance is cheapest before year one starts.