Exterior House Painting in London: Costs, Paint Types & Durability

London experiences high humidity, frequent rain, and significant temperature swings—conditions that demand durable, moisture-resistant coatings. Acrylic latex paints are the most popular choice for London properties because they offer excellent weather resistance, breathability to prevent trapped moisture, and faster drying times in unpredictable conditions. Premium acrylic formulations (typically £40–£80 per litre) include fungicide additives that prevent mould and algae growth, a critical concern in London's damp climate. Masonry paint is ideal for brick and render finishes common in Victorian and Edwardian London properties, as it fills micro-cracks and allows the wall to breathe. Oil-based eggshell paints provide superior durability and a traditional finish but have longer drying times and higher VOC content—most painters avoid them for full exterior work in favour of modern acrylics.

Preparation typically accounts for 40–50% of the project timeline and is non-negotiable for paint longevity in London. Scraping removes all loose, peeling, or flaking paint down to a stable surface—essential because new paint won't adhere properly over failing old coats. Pressure washing (at correct PSI settings to avoid damage to mortar and older substrates) removes dirt, algae, and biological growth common on London properties. Caulking fills gaps around windows, doors, cornicing, and render cracks to prevent water infiltration and extend paint durability by 2–4 years. Priming is mandatory on bare wood, new plaster, or previously unpainted masonry—quality primer (typically 1 coat) costs £15–£25 per litre and prevents staining, tannin bleed, and uneven finish on the final coats.

Exterior painting costs in London range from £8–£16 per square metre (approximately £0.75–£1.50 per square foot) for labour and materials combined, depending on property complexity and current market rates. A typical mid-terrace house with 150–180 square metres of paintable surface costs £1,200–£2,880 for labour alone; adding premium paints and extensive prep increases the total to £2,500–£4,500. Larger Victorian properties or homes with cornicing, fascias, and complex architectural features may reach £5,000–£8,000+. Budget increases significantly if old paint contains lead (common in London properties built before the 1980s) or if the property requires specialist scaffolding or specialist access equipment. Most reputable London painters provide detailed quotes breaking down labour, materials, site preparation, and equipment hire to ensure transparency.

Standard exterior painting requires 2 coats of topcoat paint over a primed surface—this combination ensures uniform colour coverage and maximum durability. If the existing paint is in poor condition, faded, or a very different colour, painters recommend 2 coats of primer followed by 2 coats of topcoat to guarantee long-lasting results. High-quality acrylic paints marketed as 'one-coat coverage' are rarely sufficient outdoors in London's climate; the extra coat provides insurance against adhesion failure, colour fading, and moisture ingress. Each coat typically takes 24–48 hours to cure fully depending on temperature and humidity—London's damp conditions mean painters often add 1–2 extra days between coats.

Quality exterior paint lasts 5–8 years in London's challenging climate before visible fading and minor chalking begin. Premium acrylic paints with advanced binders and fungicide can extend this to 8–10 years, particularly on south- or east-facing elevations that receive more sunlight and dry faster. North-facing walls and areas shaded by trees or buildings remain damper and may show algae growth or colour dulling after 5–6 years, requiring earlier repainting or a dedicated maintenance wash. Proper maintenance—annual inspection, gentle cleaning, and prompt repair of cracks or damage—can add 2–3 years to paint life. Properties exposed to coastal salt spray (within 5 miles of the Thames estuary) may see reduced durability and should use marine-grade paints.

A professional exterior repaint quote should include site preparation (pressure washing, scraping loose paint, repairing cracks), caulking and filling all gaps and joints, priming bare areas, applying 2 full coats of topcoat paint, and minor repair work such as loose mortar repointing. Fascias, soffits, gutters, and downpipes are often quoted separately if repainting is required, as these require specialist access and additional surface preparation. Protection of windows, doors, landscaping, and adjacent properties is standard and included in labour costs. Most London painters offer a 1–2 year warranty on their workmanship but not on paint manufacturer defects (check individual paint warranty terms separately). Site clearance, skips, and scaffold hire are typically additional line items; always confirm whether these are included in the quoted price or charged separately.