How Long Does Exterior Paint Last on UK Homes?
In UK homes, exterior paint lifespan varies hugely by substrate: standard acrylic masonry paint 8–15 years, silicone or breathable masonry 15–20 yrs, K Rend or pre-coloured silicone render 20–25 yrs (often no repaint needed), and wood (windows, fascias, doors) 4–8 yrs. Coastal homes, exposed altitudes and north elevations sit at the lower end of every range.
Exterior paint lifespan at a glance — UK 2026
- Standard acrylic masonry (Dulux Weathershield, Crown): 8–15 yrs
- Premium silicone / breathable masonry (Beeck, Keim, Sandtex Silicone, Wethertex): 15–20 yrs
- Pre-coloured silicone render (K Rend, Weber, Parex): 20–25 yrs (often no repaint needed)
- Soft wood (windows, fascias, doors): 4–8 yrs (microporous breathable wood stains last 5–7)
- Hardwood (oak, accoya, idigbo): 8–12 yrs with quality stain or paint system
- Metal (gutters, downpipes, railings): 6–12 yrs depending on prep and primer
Coastal & exposed-altitude penalty: deduct 30–40% from every range above. South-facing elevations bleach faster than north; north elevations grow algae faster.
Lifespan by substrate and UK exposure, 2026
What's worth paying for in 2026 — silicone vs acrylic, breathability and bio-resistance
The single biggest 2026 lifespan upgrade is moving from a standard acrylic masonry to a silicone or silicate breathable system — typically doubles repaint cycle while letting trapped moisture out of older lime-mortar walls.
- Acrylic masonry (£30–£45 per 5L): waterproof film, blocks vapour. Fine on modern cavity brick; poor on solid-wall pre-1920 stock (traps moisture, accelerates blowing).
- Silicone-modified masonry (£45–£70 per 5L): water-resistant but vapour-permeable. The 2026 default for renovation work and any solid-wall property.
- Mineral / silicate masonry (Keim, Beeck — £80–£120 per 5L): bonds chemically to mineral substrates, 25–40 yr life, used on listed and heritage facades.
- Bio-resistant additives: dulux Bioshield-class additives reduce algae regrowth on north elevations by 60–80% over a 10-yr cycle. Worth the £5–£10/5L uplift everywhere.
2026 reality: labour now accounts for 70–80% of a typical exterior repaint cost — spending an extra £300–£600 on premium paint that doubles the repaint cycle is the highest-ROI upgrade in exterior decoration.
Frequently asked questions
Standard acrylic masonry 8–15 yrs, silicone/breathable 15–20 yrs, pre-coloured silicone render 20–25+ yrs. Coastal and exposed-altitude properties sit at the lower end; sheltered urban properties at the upper.
Softwood windows, fascias and doors every 4–8 yrs depending on exposure. Hardwood (accoya, oak, idigbo) every 8–12 yrs with a quality microporous breathable system. South-facing UV-exposed wood always shortest.
Yes — silicone paint typically doubles the repaint cycle on solid-wall homes and reduces re-blowing/peeling failures caused by trapped moisture. With 70–80% of repaint cost now in labour, the £300–£600 premium pays for itself first cycle.
3-bed semi: £2,400–£4,800 fully prep'd and painted with silicone masonry (scaffold included). Add £600–£1,400 for window/fascia repaint at same time. Detached 4-bed: £3,800–£7,500. Listed/specialist substrates 25–40% premium.
North elevations stay damp longer between rain events — algae, moss and lichen colonise the paint surface, secreting organic acids that break the binder. South elevations get UV degradation but dry faster between events. Both fail — just differently.
Only the failing or flaking sections — scrape, sand and feather-edge those back to sound paint. Solid intact film can be cleaned, fungicidally washed, primed and over-coated. Full removal is only required where the original system is incompatible (e.g. solvent over breathable mineral).
Sources used in our 2026 lifespan figures
- PDA — Painting and Decorating Association
- Dulux Weathershield — Technical data
- K Rend — Silicone render systems
- SPAB — Society for the Protection of Ancient Buildings (breathable paint guidance)
Methodology: Lifespan ranges drawn from manufacturer technical datasheets (Dulux, Keim, K Rend, Beeck), PDA / SPAB published guidance, and BestBuilders' decorator network field reports (May 2026, 160+ active firms). Last fact-checked: .