How Often Should You Repaint Your Home's Exterior?

How Long Does Exterior Paint Last?

In the UK, a well-applied exterior paint job typically lasts between 5 and 10 years — but this varies considerably depending on the type of surface, the quality of paint used, the preparation work done beforehand, and the direction the property faces.

A south-facing wall takes far more UV exposure than a north-facing one. A rendered surface behaves differently from brick or timber. And a paint job with thorough prep work underneath it will always last longer than one where the surface wasn't properly cleaned, primed, and filled before painting.

Signs Your Exterior Needs Repainting

Rather than going by a fixed number of years, it's better to watch for the actual warning signs. These tell you your paint is breaking down and it's time to act:

• Peeling or flaking — paint that's lifting away from the surface in patches. This usually means moisture has got beneath the paint film, often due to a surface that wasn't fully dry or primed before painting.
• Chalking — a white, powdery residue on the surface when you run your hand along the wall. This is paint breaking down due to UV exposure and is normal over time, but extensive chalking means the paint has reached the end of its life.
• Cracking or crazing — fine cracks across the painted surface. Left untreated, these allow water in, which accelerates damage to the masonry or render beneath.
• Fading — significantly washed-out colour compared to when it was first painted. Some fading is normal, but severe fading suggests the paint's binder has broken down.
• Mould or algae — green or black patches, particularly on north-facing or shaded walls. This is both a cosmetic issue and a sign that the wall is holding moisture.
• Bare patches — areas where the paint has worn away entirely, exposing the render or substrate beneath. These need attention quickly to prevent water ingress.

What Affects How Long Exterior Paint Lasts?

Several factors determine whether your exterior paint lasts five years or ten:

Preparation. This is the single biggest factor. Paint applied over a dirty, damp, or poorly primed surface will fail prematurely, no matter how expensive the paint is. A thorough clean, repair of any cracks or spalling, and the right primer makes an enormous difference to longevity.

Paint quality. Trade-grade masonry paints contain more pigment and better binders than budget alternatives. They cost more per litre but genuinely do last longer and provide better coverage.

Number of coats. A single coat is rarely sufficient for exterior masonry. Two coats — ideally three on new or absorbent surfaces — gives you proper protection.

Weather exposure. South and west-facing elevations face the most sun and rain respectively in the UK and will show wear sooner. Sheltered walls under deep eaves will last longer.

The surface type. Smooth render holds paint better than rough, textured coatings. Timber requires repainting more frequently than masonry — typically every 3–5 years.

What Happens If You Leave It Too Long?

The consequences of leaving exterior paint to fail go beyond aesthetics. Once the paint film breaks down, water can penetrate the underlying masonry or render. In winter, this water freezes and expands, causing the surface to spall — which means chunks of render or masonry begin to break away. Repairing spalled render is significantly more expensive than repainting before it gets to that stage.

Persistent damp can also work its way through to internal walls, leading to damp patches inside the property and potentially mould growth. At that point you're looking at internal redecoration costs on top of the exterior work — all of which could have been avoided with timely repainting.

Best Time of Year to Repaint Exteriors in the UK

Exterior painting requires dry conditions and temperatures above 5°C — below this, paint won't cure properly. In the UK, that generally means the best window is between April and October.

Late spring and early summer are ideal: temperatures are mild, daylight hours are long, and there's less chance of rain. We'd generally avoid painting in August and September if the forecast is changeable, and we always check the weather carefully before any exterior project.

If your exterior needs attention, it's worth getting a quote in early spring so the work can be planned for the right weather window — popular slots do get booked up.

Timber Requires More Frequent Attention

If your property has painted timber features — window frames, soffits, fascias, bargeboards, or timber cladding — these need attention more often than masonry. Timber expands and contracts with changes in temperature and moisture, which puts stress on the paint film. A good rule of thumb is to inspect timber paintwork every 2–3 years and repaint whenever you notice cracking, peeling, or bare wood appearing.

Catching bare timber early is important: once wood begins to absorb water, it swells and can start to rot. A coat of paint in year three is far cheaper than replacing rotted window frames in year six.

Our Recommendation

Walk around your property once a year — ideally in spring after the harshest weather has passed — and look at the painted surfaces with fresh eyes. Check for the signs listed above. If you see chalking, cracking, or peeling beginning in any area, get it assessed before it spreads. Addressing small areas of failure promptly is always more cost-effective than a full remediation job later.

Our team carries out exterior painting across Richmond, Wandsworth, Epsom, Horsham, and across London and Surrey. We're happy to come out, take a look, and give you an honest assessment with a no-obligation quote.