How to Bring Teak Furniture Back to Life?

Teak furniture can be restored in four stages: clean it thoroughly, treat any mould or staining, sand lightly where the grain has roughened, then either oil it to return the honey colour or leave it sealed and allow the silver grey patina to continue. Almost all tired looking teak is simply dirty rather than damaged, so the cleaning stage does most of the work. A weathered grey bench that looks beyond saving will usually come back with a scrubbing brush, a mild soap solution and an afternoon of patience.

The important thing to understand first is that grey teak is not damaged teak. Teak contains natural oils that protect it from within, and the silver grey surface is only the top layer of cells reacting to UV light. The timber beneath is unchanged.

Assess what you are actually dealing with

Before touching the furniture, look closely and identify which of these applies.

Even silver grey across all surfaces is normal weathering and needs nothing more than a clean if you like the colour. Green or black patches are algae and mould growing on the surface, common on the underside of arms and in shaded joints. A rough, slightly fibrous feel means the surface grain has lifted and will need light sanding. Dark rings and patches usually indicate water or metal staining. Loose joints and wobbling are structural and should be dealt with before any finishing work.

Splits at the ends of boards, known as checking, are normal in teak and rarely affect strength. Deep cracks running along a leg or rail are a different matter and need assessment.

Stage one: cleaning

Work on a dry day in the shade if possible, since direct sun dries the surface too quickly and leaves patches.

Mix warm water with a small amount of mild washing up liquid or a dedicated teak cleaner. Wet the whole piece first so it absorbs evenly. Scrub with a soft or medium bristle brush, always following the direction of the grain rather than across it, since scrubbing across the grain scratches the surface and traps dirt.

Work in sections and rinse each one before moving on so dirty water does not dry back into the timber. Pay attention to the undersides of arms, the joints between slats and around bolt heads, where growth accumulates.

Rinse thoroughly with clean water and let the furniture dry for at least 48 hours before any further work. Teak feels dry on the surface long before it is dry throughout, and applying oil to damp timber traps moisture and encourages mould.

A word on pressure washers: they can be used at a very low setting and a wide fan from a distance, but they erode the softer grain easily and often leave a striped surface. A brush is slower and safer.

Stage two: mould, algae and stains

For green or black growth, a solution of mild soap with a little added white vinegar handles most cases. For persistent mould, a proprietary outdoor timber cleaner is more effective. Apply, leave for the stated time, then scrub and rinse fully.

Avoid strong bleach. It will kill the growth but also lightens the timber unevenly and can leave a bleached halo around the treated area that is very difficult to blend afterwards.

Dark rings from plant pots and glasses usually respond to a light sanding rather than chemicals. Black spots directly around bolts or screws are iron staining caused by moisture reacting with metal. Stainless steel fittings avoid this, and replacing corroded fixings is worth doing while the piece is apart.

Oil and grease marks from food need a degreasing wash rather than a general clean. Treat the mark, then wash the whole panel so the cleaned area does not stand out.

Stage three: sanding

Sanding is only needed if the surface feels rough or if you want to remove the grey layer completely.

Start with 120 grit if the surface is quite rough, then move to 180 and finish at 220 for a smooth feel. Always sand along the grain. Use a sanding block or an orbital sander held flat, and keep moving so you do not dish the surface.

Sand lightly. Teak has a limited thickness of usable timber and repeated heavy sanding over several years will round off edges and thin the boards. Removing the grey takes surprisingly little effort, and the warm colour appears within a few passes.

Vacuum and wipe the dust away with a barely damp cloth, then allow it to dry again before finishing. Dust left in the grain will show through any oil you apply.

Stage four: to oil or not to oil

This is the decision that divides opinion, and both answers are correct depending on what you want.

Oiling returns the rich honey brown colour and gives a warm, freshly made appearance. It needs repeating, typically once or twice a year in the UK climate, and it must be done properly. Use a teak or hardwood oil suitable for exterior use, apply thin coats with a cloth or brush, allow each to penetrate, then wipe away all excess. Oil left sitting on the surface becomes sticky and attracts dust and, in shaded spots, can encourage mould growth.

Leaving teak unoiled is entirely acceptable and is what many prefer for garden furniture. The timber continues to protect itself with its own oils and settles into an even silver grey. Maintenance reduces to an annual wash.

A middle path is a teak sealer, which is not the same as oil. A sealer aims to hold the current colour in place and slow further greying without building a film. It suits people who like the colour immediately after restoration and want to keep it for longer between treatments.

Whatever you choose, avoid varnish and exterior paint on teak. The natural oils prevent good adhesion, so film finishes tend to lift and flake, leaving a far worse job to correct later.

Structural repairs worth doing

While the piece is clean and dry, check the hardware. Tighten every bolt, replace any corroded fixing with stainless steel, and check that folding mechanisms move freely.

Loose joints on chairs and benches can often be re glued with an exterior grade waterproof wood adhesive. Take the joint apart if possible, clean out old adhesive and dirt, then clamp until fully cured. A joint glued while dirty will fail again quickly.

Small splits can be left alone. Larger ones can be filled with an exterior wood filler tinted close to the timber, though a filled repair will always show slightly and may not take oil the same way as the surrounding wood.

Keeping teak looking well after restoration

Wash once a year, ideally in spring, and deal with growth as soon as you see it rather than at the end of the season. Keep furniture slightly raised off paving so water does not sit under the feet, and move cushions indoors when not in use.

Over winter, teak can stay outside, but a breathable cover helps if the piece sits under a tree, where sap and debris cause most of the staining. Sealed plastic covers trap moisture and cause more problems than they prevent.

If you are replacing rather than restoring, our modern garden benches UK sale range and the wider modern garden dining sets UK selection include hardwood and low maintenance alternatives. Cushions and covers can be stored neatly using one of the boxes in our garden storage UK sale range, which does more for longevity than any finishing product.

You can browse the full modern garden furniture UK collection at Furniture in Fashion, and we offer free delivery to most UK mainland postcodes.

Frequently Asked Questions

Does grey teak mean the wood is ruined?

No. Greying is a surface reaction to UV light and affects only the top layer of cells. The timber underneath retains its natural oils and strength, and the colour can be brought back with cleaning and light sanding.

Should teak garden furniture be oiled?

Only if you want to keep the honey colour. Oiling needs repeating once or twice a year and any excess must be wiped away. Leaving teak unoiled is perfectly sound and reduces maintenance to an annual wash.

Can I use a pressure washer on teak?

Use it with caution, at low pressure, with a wide fan and from a distance. It removes softer grain easily and can leave a striped, furry surface that then needs sanding. A brush and mild soap is the safer method.

How do I remove black spots from teak furniture?

Black spots are usually mould or iron staining from metal fixings. An outdoor timber cleaner handles mould, while staining around bolts generally needs light sanding and replacement stainless steel fittings.

How often should teak furniture be cleaned?

Once a year is enough for most pieces, ideally in spring before regular use begins. Furniture sitting under trees or in permanent shade may benefit from a second wash later in the year.