How to paint a garden fence

Video by Waltons Garden Buildings. This guide is based on the helpful walkthrough "CARE & REPAIR — How To Paint Your Fence" from Waltons, one of the UK's leading garden buildings and fencing companies. Their video is worth a watch before you start — particularly the sections on using a paint sprayer to speed up a long run of panels, and why you should never skip the prep step on weathered timber.

1. Pick the right product for the job

Fence treatment and fence paint are different things. Treatments soak in and feed the wood — they do not sit on the surface, so you get no colour build. Paints and coloured stains sit on the grain and give a bolder finish but need more prep and more regular upkeep.

For most UK gardens, an opaque fence paint in a natural shade (dark brown, slate grey, or sage green) is the popular choice. Brands like Cuprinol, Ronseal, and Sadolin all offer water-based versions that dry faster and clean up easily. Whatever you buy, check it includes fungicide protection — UK weather is damp enough to need it.

2. Clear the area and protect plants

Move pots, garden furniture, and anything else close to the fence. Lay out a dust sheet or tarpaulin along the base to protect lawn and borders from drips.

If you have climbers growing up the fence — roses, clematis, ivy — tie them back or drape a dust sheet loosely over them. Fence paint kills most plants if it lands on the leaves in any quantity.

3. Prepare the fence surface

Brush off loose dirt, cobwebs, and flaking old paint with a stiff bristle brush. For a fence that has not been treated in a few years, give it a good scrub with warm soapy water and a garden brush, then rinse off and leave to dry for at least 24 hours. Painting wet timber is the single fastest way to get paint that peels within a season.

Check for any rotten or loose boards while you are cleaning. It is much easier to replace or secure them now than after the paint goes on.

4. Check the weather forecast

Aim for a dry spell of at least two days. Ideally you want overcast but dry conditions — full sun can cause water-based paints to dry too quickly on the surface, leaving the layers beneath still wet and prone to bubbling. Temperatures below 5 °C will prevent most fence paints from curing properly.

Never paint a fence that is still damp from overnight dew or recent rain. Wait until mid-morning and feel the surface with the back of your hand before you start.

5. Apply the first coat

Work from top to bottom and from one end of the fence to the other. A wide masonry brush or a purpose-made fence brush lets you cover ground quickly. Push the paint into the gaps between boards and work it into the grain — do not just skim the surface.

If you have a long run of panels and the budget for it, a garden paint sprayer is a genuine time-saver. Mask up the posts and any adjoining surfaces carefully first, wear eye protection, and use it on a calm day — even a light breeze carries spray well beyond where you want it.

6. Leave to dry and apply a second coat

Most fence paints need two hours between coats, but check the tin. In cool or humid conditions, give it longer. The first coat is always thinner and patchy — that is normal. The second coat is where the finish comes together.

Apply the second coat in the same direction as the first, working systematically so you do not miss patches or double up in the same spots. Stand back occasionally and look along the length of the fence in the light — thin patches show up more easily that way.

7. Edges, posts, and hard-to-reach spots

The tops of fence panels are often forgotten and they are also the first place where water sits and rot sets in. Make sure paint goes on the top edges of every panel and the tops of the posts too.

A small, narrow brush is useful for working into the slots where panels meet posts, and for getting around hinges if you have a gate in the run. Do not skip these bits — they are where most fences first start to go.

When to call a handyman

Call Richard if the fence is long, if some panels need replacing before it can be painted, or if the whole job is simply going to take more than a weekend to tackle. Painting a fence is satisfying work but it is also a proper workout, particularly on a full garden boundary run.