Teak stays beautiful for 25 years or more with basic seasonal care

Teak is one of the few woods that weathers well outdoors without stain or sealant. It contains natural oils that resist rot and insects, so it won't splinter or fall apart the way pine or cedar will. But teak does change color—it fades from honey-gold to silvery gray over a few years—and it needs cleaning and occasional oiling to stay supple and prevent cracks. The work is straightforward: a brush, mild soap, and a cloth, done once or twice a year depending on your climate.

Unlike softer woods, teak requires no varnish or polyurethane. Those products would actually peel and flake because the wood is too oily for them to stick. Instead, your job is to keep the surface clean so dirt and mildew do not trap moisture, and to oil it occasionally if you want to preserve the golden color. Even with no maintenance at all, teak will outlast most other outdoor furniture.

Key Takeaways

  • Teak requires no stain or sealant and will not rot outdoors, but it will turn gray without regular cleaning and oiling.
  • Clean teak twice a year with a soft brush and mild soap mixed with water, then rinse thoroughly and let it dry completely.
  • Oil teak once a year in spring with teak oil or Danish oil applied with a cloth, working with the grain and wiping away excess.
  • Sand teak lightly with 120-grit sandpaper if it becomes rough or splintered, then oil it afterward.
  • Store cushions indoors during winter and cover furniture in very wet climates, but teak itself does not need a cover year-round.

How to clean teak furniture step by step

Clean teak twice a year—once in spring after winter weather, and once in fall before heavy rain and cold. In very humid climates, clean it three times a year. Regular cleaning prevents dirt and mildew from building up in crevices and trapping moisture against the wood.

Mix warm water with a few drops of dish soap or a small squirt of mild laundry detergent in a bucket. Use a soft-bristled brush—never a wire brush or pressure washer, which will damage the grain and create splintering. Scrub the entire surface, paying attention to crevices where dirt collects, then rinse thoroughly with clean water from a hose. Let the furniture dry completely in the sun before you oil it or use it. Drying usually takes 24 hours in warm weather.

If you see black or green spots (mildew or algae), scrub those areas harder or use a teak cleaner made for this purpose, following the product instructions. Do not use bleach, which can damage the wood fibers. After cleaning with a teak cleaner, rinse twice to remove all residue and let the wood dry completely before oiling.

Oiling teak to restore color and protect the wood

Oil teak once a year in spring after you have cleaned it and it has dried completely. Use teak oil (sold at most hardware stores and online) or Danish oil, which are both food-safe finishes that soak into the wood rather than sitting on top. Do not use linseed oil, which can become sticky in heat and attract dust.

Pour a small amount of oil onto a clean, lint-free cloth and rub it onto the wood in the direction of the grain. Work on one section at a time—a chair arm, a tabletop, a bench slat—and use long, even strokes. Let the oil soak in for 15 to 20 minutes, then wipe away any excess with a dry cloth. If you leave oil pooling on the surface, it will become sticky and attract dust. The wood should look slightly darker and feel smooth, not slick.

If you oil every year, you will maintain the golden color. If you skip a year or two, the gray will return, but you can bring back the warmth by oiling again. There is no harm in letting teak gray naturally if you prefer that appearance—it is purely a matter of taste.

Sanding and repairing rough or splintered teak

After a few years, teak can become rough to the touch, especially on armrests and seat edges where people's skin makes contact. Sand the rough area lightly with 120-grit sandpaper, working with the grain. Do not sand hard or use coarse paper (60-grit or lower), which will gouge the wood. A light pass is enough to smooth the surface.

If you see splinters, sand them down the same way. After sanding, wipe away all dust with a damp cloth, let the wood dry, and then oil that section. Sanding removes the protective surface, so oiling restores it and prevents new roughness from forming quickly.

Small cracks sometimes appear in teak as it ages and the wood moves slightly with temperature and humidity changes. These are normal and do not affect the furniture's strength or lifespan. You do not need to fill them. If a crack bothers you visually, you can use a teak-colored wood filler, but it will not match perfectly and may be unnecessary.

Storing and protecting teak through winter

Teak does not need a cover year-round. It is designed to sit outside in rain and snow. However, if you live in a very wet climate with constant rain or snow, a fitted cover will reduce the amount of cleaning you need to do and slow the graying. Use a breathable cover (not plastic), which allows moisture to escape and prevents mildew underneath.

Cushions and pillows should always be stored indoors during winter or brought inside during heavy rain. Water-resistant cushion covers help, but they are not waterproof, and wet padding will mold. Remove cushions and store them in a dry garage, shed, or basement where they will not absorb moisture.

You do not need to bring teak furniture inside for winter unless you live somewhere with extreme cold or salt spray (coastal areas). Teak handles freezing well. If you do store furniture indoors, keep it in an unheated space like a garage rather than a heated room, which can cause the wood to crack from rapid moisture changes.

Dealing with mold, mildew, and stains

Black or green spots on teak are mildew or algae, not rot. They grow in damp, shaded spots and are purely cosmetic. Clean them with a teak cleaner or a stiff brush and soapy water. If they return quickly, the furniture is in a spot that stays too wet—consider moving it to a sunnier location or improving air circulation around it.

White or cloudy patches sometimes appear after oiling and usually mean you did not wipe away excess oil completely. Let the furniture sit in the sun for a few days and the cloudiness will fade. If it does not, sand the area lightly with 120-grit paper and re-oil it, wiping away all excess this time.

Rust stains from metal hardware or nearby metal objects can happen if fasteners are not stainless steel. If you see rust, sand it out and replace the hardware with stainless steel bolts and screws. Teak itself will not rust, but the metal parts will if they are not corrosion-resistant.

Frequently Asked Questions

Can I use a pressure washer on teak furniture?

No. Pressure washers damage the wood grain and can create splintering and soft spots. Stick to a soft brush and soapy water. If you have stubborn dirt, let soapy water soak for 10 minutes before scrubbing.

What if my teak furniture has white residue or bloom on it?

That is usually excess oil that was not wiped away, or mineral deposits from hard water. Let it sit in the sun for several days—UV light breaks down the residue. If it persists, sand lightly with 120-grit paper and re-oil, wiping away all excess this time.

Do I have to oil teak, or can I just clean it?

You do not have to oil it. Teak will weather to gray and stay sound without any oil. Oiling is optional and done only if you want to keep the golden color or make the wood feel smoother. Cleaning is the only essential maintenance.

How long does teak furniture actually last outdoors?

Well-maintained teak lasts 25 to 30 years or longer. Even neglected teak rarely fails before 15 to 20 years because the wood is naturally rot-resistant. The main reason to care for it is to keep it looking good, not to prevent it from falling apart.

Can I refinish teak if it gets too rough or damaged?

Yes. Sand the entire piece with 120-grit sandpaper to remove the weathered surface, then oil it. This restores the golden color and smooth feel. For deep gouges or cracks that bother you, a woodworker can repair them, but most damage is cosmetic and does not affect the furniture's use.