Outdoor Cladding Materials Compared: Composite vs Timber vs uPVC
Choosing an Exterior Cladding Is a 25-Year Decision
The cladding you choose now defines how your house looks - and how much weekend time you spend maintaining it - for the next quarter-century. Three materials dominate the UK market today: composite, timber, and uPVC. Each has clear strengths and very different long-term cost profiles.
Timber Cladding
Pros: Natural beauty, real wood grain, biodegradable, can be re-stained any colour. Cedar and larch weather to attractive silver tones. Cons: Annual treatment needed (oil, stain, or preservative). Prone to cracking, splitting, and warping. Vulnerable to rot, woodworm, and weathering. Costs £50-£140/m² installed depending on species. Realistic lifespan with maintenance: 15-25 years.
Composite Cladding
Pros: Looks like timber but doesn't rot, fade quickly, or need re-treatment. Made from recycled wood fibre and plastic. Wide colour range including dark charcoal and warm cedar tones. Capped versions resist staining and impact. Cons: Slightly higher upfront cost than softwood timber. Less 'authentic' than real wood at very close inspection. Costs £60-£110/m² installed. Realistic lifespan: 25-30+ years with warranty cover.
uPVC Cladding
Pros: Lowest upfront cost. Completely rot-proof and waterproof. Wide range of colours and finishes including modern wood-effect ranges. Easy to clean with soap and water. Excellent for soffits, fascias, and full house cladding. Cons: Less convincing as wood at close range. Older ranges had a 'plasticky' look (modern ranges have improved dramatically). Can fade if cheap; quality UV-stable products last decades. Costs £25-£60/m² installed. Realistic lifespan: 20-30 years.
Cost Over 25 Years
Timber: £50-£140/m² installed + £15-£25/m² in treatment costs over 25 years. Composite: £60-£110/m² installed + minimal ongoing cost. uPVC: £25-£60/m² installed + minimal ongoing cost. Over 25 years, composite often beats timber on total cost despite higher initial price, and uPVC is consistently the cheapest.
Looks Comparison
For pure authentic wood character, timber still wins on day one. But within 12-24 months in the UK climate, untreated timber turns silver-grey and starts to crack - composite and modern uPVC wood-effect ranges actually look better than weathered timber by year five.
Sustainability
Best for sustainability: composite cladding with high recycled content (often 50-95% recycled material by weight) and end-of-life recyclability. Sustainable timber from FSC or PEFC sources is also strong. uPVC has improved environmentally but is least recyclable of the three.
Which Should You Choose?
Budget-driven, low-maintenance project: uPVC. Premium look with low maintenance: composite. Heritage property or you genuinely love the maintenance ritual: timber. For most modern UK builds and extensions, composite cladding hits the sweet spot of appearance, durability, and lifecycle cost.
