How to paint garden furniture

Inspired by a helpful UK garden guide. This walk-through draws on the video “How to Paint Wooden Garden Furniture”, a practical UK guide that covers the full process from cleaning through to finishing coats. The advice on choosing paint for British weather conditions is particularly useful if you have been puzzling over which product to use at the garden centre.

1. Choose the right day and the right paint

Do not paint furniture in full sun — the paint skins over too quickly and you end up with brush marks. A dry, overcast day with no frost forecast for 24 hours is ideal. Temperature should be above 10°C for most water-based exterior paints to cure properly; check the tin for the specific guidance.

For wooden garden furniture, use a dedicated garden furniture paint or an exterior wood paint with good flexibility for outdoor use. Products like Cuprinol Garden Shades and Ronseal Garden Furniture Paint are designed specifically for this application and stand up to UK weather far better than standard interior paints pressed into outdoor service. Avoid using leftover fence paint — it is often too thin and does not give the same clean coverage.

2. Clean the furniture thoroughly

Start with a thorough clean. Use a stiff brush and warm soapy water to scrub away dirt, mould, and green algae from all the surfaces, including the undersides of seats and the insides of joints. Rinse well and allow to dry completely — at least 24 hours in decent weather. Painting over damp wood is the most reliable way to get a finish that bubbles and peels.

If there is stubborn mould or green growth, treat with a diluted garden fungicide or exterior wood cleaner first, following the instructions on the product. Let it do its work, then rinse off before you sand.

3. Sand down to a sound surface

If there is existing paint that is flaking or peeling, remove it as fully as you can using medium-grit sandpaper (80 or 100 grit) before finishing with fine (120 or 150 grit). You do not need to strip back to bare wood on every piece — any existing paint that is firmly adhered and not cracking can be left and painted over, as long as you key the surface by sanding it lightly first.

Wipe down all the sanded surfaces with a slightly damp cloth after sanding to remove the dust. Allow to dry again. Painting over a dusty surface gives a gritty finish that looks and feels poor.

4. Prime any bare wood

If you have sanded back to bare wood, apply a primer before the topcoat. Many garden furniture paints are self-priming over previously painted surfaces, but bare wood will absorb the first coat unevenly without a primer, leaving a patchy result. A quick-drying exterior wood primer is fine; apply a thin coat to the bare areas and let it dry before topcoating.

Pay attention to the end grain on legs, tabletop edges, and cross-rails — this is where water enters and the wood rots first. Brush a little primer or neat exterior wood treatment into those areas before finishing over them with the topcoat.

5. Apply the first topcoat

Load the brush or roller (a small foam roller gives a smoother finish on flat panels) and work in the direction of the grain. Apply a thin, even coat rather than loading on a thick one. Thick coats run on vertical surfaces and take much longer to dry. Two thin coats will always give a better result than one thick one.

Cover all surfaces, including the underneath of table tops, the insides of chair backs, and the bottom few centimetres of legs. Those are the areas that collect moisture and go first. It takes longer, but it is worth it.

6. Rub down lightly and apply the second coat

Once the first coat is fully dry, rub it over very lightly with fine sandpaper (180 or 240 grit) or a piece of grey scotch pad. This takes off any dust nibs and gives the second coat something to bite into. Wipe off the dust and apply the second coat in the same way as the first.

Allow the second coat to cure fully before putting the furniture back into use — usually 24 to 48 hours depending on temperature. Moving furniture or placing objects on a table that has not fully cured will mark the finish and undo the work you have just done.

7. Maintain annually

A coat of garden furniture paint each spring, after a light sand and clean, will keep furniture looking good indefinitely. Once you have done the initial preparation work, maintenance coats are quick and easy — an hour or two for a table and four chairs. Bring furniture in over winter if possible, or cover it with proper breathable furniture covers. Kent winters are not the worst in the country but they are wet enough to accelerate wear on any outdoor timber.

When to call a handyman

Call Richard if any joints are loose, legs are rotten through, or the furniture needs repairs before it is worth painting. Painting over structural problems just delays the inevitable, and loose joints will work apart once the furniture is in use again.