In a humid climate like Coimbatore's, how do uPVC and WPC hold up? Here's the honest picture.
WPC (wood-plastic composite) is a blend of wood fibre and plastic, used mainly for doors and some fittings. uPVC (unplasticised PVC) is the material used for window and door frames. Both are moisture-resistant alternatives to timber, but they suit different jobs.
Humidity is where both shine over timber — neither absorbs water and rots the way wood does.
Both handle humidity well, which is why both have grown popular over timber in coastal and monsoon regions. For windows we use uPVC; for solid doors WPC is a fair option. Humidity doesn't decide between them — application does.
Both handle humidity far better than timber — neither rots or swells. For windows uPVC is the choice; for solid doors WPC is fair. Application decides, not humidity.
Almost none — so it won't swell or warp in humidity, unlike timber.
Yes — it's moisture-resistant, a fair option for doors in humid climates.
Related guides covering this topic from other angles — different products, applications, or contexts.
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