How to Paint Garden Furniture

DIY Guide

Revive tired outdoor furniture with the right prep, primer, and paint for a lasting finish.

Quick Answer

To paint garden furniture, clean and sand the surface, apply a suitable primer, then finish with at least two coats of exterior-grade paint. Allow full drying time between coats. Proper preparation is essential for a finish that resists UV, moisture, and general outdoor wear.

Before

After

Difficulty

Beginner

Time

3–4 Hours (plus drying time)

Cost

£20–£50

Tools Needed

Wire brush
Sanding block or orbital sander
Paintbrushes (various sizes)
Cloth or tack cloth
Bucket and sponge
Dust mask
Safety glasses

Materials

Exterior wood primer or metal primer (as appropriate)
Exterior-grade garden furniture paint or metal paint
Coarse and fine abrasive paper (80 and 120 grit)
Sugar soap or mild detergent
White spirit or thinners (for oil-based paints)
Masking tape
Dust sheets or old newspaper

How To

Step-by-Step Guide

Clean the Furniture Thoroughly

Wash down the entire piece with a sugar soap solution and a sponge to remove dirt, grease, algae, and mildew. Rinse well with clean water and leave to dry completely — at least 24 hours — before doing anything else. Paint will not bond properly to a contaminated or damp surface, so do not rush this stage.

Remove Old Flaking Paint and Rust

Use a wire brush or coarse abrasive paper (80 grit) to remove any loose, flaking, or peeling paint. For metal furniture, work the wire brush into joints and crevices where rust tends to hide. Stripping old paint from wood back to bare timber gives the best result when the existing finish is badly deteriorated. For wood, follow up with 120-grit paper to smooth the grain and give the primer a surface to key into.

Sand and Key the Surface

Even if the existing paint is sound, lightly sand the whole piece with 120-grit abrasive paper to give the new paint a mechanical key. Wipe away all dust with a tack cloth or a damp cloth wrung out well. Any dust left behind will show through the finish and cause adhesion problems. This step applies to both wood and metal furniture.

Apply the Appropriate Primer

Use a wood primer for timber furniture or a rust-inhibiting metal primer for metal pieces — the right primer is what gives your topcoat something to grip. Apply one even coat with a brush, working it into joints and spindles. Allow to dry fully according to the manufacturer’s instructions, typically 2–4 hours. Good prep and undercoating of wood at this stage makes the topcoat go further and last longer. Lightly sand with fine paper once dry and wipe clean before painting.

Apply Two Coats of Exterior Paint

Choose an exterior-grade paint rated for outdoor use — it must be UV-resistant and waterproof. Apply the first coat thinly and evenly using a good-quality brush, working along the grain on wood. Allow the first coat to dry fully, lightly sand with 180-grit paper, wipe clean, then apply the second coat. Two thin coats will always outperform one thick coat — a heavy application leads to drips, slow drying, and a soft finish that chips. For a fence or large slatted piece, our guide on how to paint a fence covers efficient brush technique for awkward profiles.

Leave to Cure Before Use

Once the final coat is touch-dry, leave the furniture for at least 48 hours before putting it back into use. Paint may feel dry to the touch in a few hours but is not fully hardened — stacking chairs or placing cushions on a surface that has not cured will mark the finish and undo your work. Store in a dry place or cover with a breathable furniture cover if rain is forecast during the curing period.

Watch Out

Common Mistakes to Avoid

Do I need to sand garden furniture before painting?

Yes. Even if the existing finish looks sound, lightly sanding gives the primer and paint a key to grip. On bare wood, sand with the grain using 80-grit first, then 120-grit to smooth. On metal, sand to remove rust and loose paint before applying a rust-inhibiting primer.

Can I paint wet or damp garden furniture?

No. The furniture must be completely dry before you apply any primer or paint. Moisture trapped under paint causes blistering and peeling — sometimes within days. Allow at least 24 hours after washing, or longer after rainfall.

How many coats of paint does garden furniture need?

How long will painted garden furniture last before needing to be repainted?

With proper prep and good-quality exterior paint, a well-done finish should last 3–5 years before needing a full repaint. You can extend the life by lightly sanding and applying a fresh topcoat every couple of years without stripping back to bare material.

Pro Tip

Before applying primer to bare metal, wipe the surface down with white spirit on a clean cloth to degrease it — even fingerprints contain enough oil to cause adhesion failure. On bare wood, apply a thin coat of raw linseed oil to end-grain surfaces 24 hours before priming; it seals the open grain and prevents the primer being sucked in unevenly.

Sources

HSE — Safe use of paint and coatings — hse.gov.uk
RHS — Looking after garden furniture — rhs.org.uk
Which? — How to paint garden furniture — which.co.uk

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This guide is for general information only. Always work safely and follow manufacturer instructions. DIYnut accepts no liability for injury or damage arising from DIY work.

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