uPVC vs aluminium windows, and wood: an honest guide for Kerala

For most Kerala homes, uPVC is the better all-round choice. Its welded, double-gasketed frames seal tightly against monsoon rain, it insulates against heat, and it does not corrode in coastal air. Aluminium has real advantages for very slim sightlines and very large glass walls. Many homes simply need well-sealed, low-maintenance windows, and that is where uPVC is strongest.

In Kerala's climate, uPVC is usually more practical. Wooden windows can swell, warp and stick in monsoon humidity, they attract termites, and they need regular painting or polishing. uPVC avoids all of that. Wood still has a natural character nothing else matches, which is why many heritage homes keep their original timber. Our wood-grain uPVC finishes offer a similar look without the upkeep.

uPVC frames are a little wider than the slimmest aluminium systems, so very minimal glass walls may suit aluminium better. Very large spans need steel reinforcement and careful design. The finish is chosen at the factory and cannot simply be repainted later. Quality also varies between makers, so the profile, reinforcement and installation matter as much as the material itself.

Yes. Termites feed on cellulose in wood, and uPVC contains none, so they cannot damage uPVC frames. This is one of the main reasons Kerala homeowners replace wooden windows with uPVC. Termites can still affect nearby timber, such as wooden lintels or furniture, so treat the rest of the house as usual. The windows themselves will not be eaten.

Yes, they reduce both, though no window makes a room soundproof. Multi-chamber uPVC profiles insulate the frame, double gaskets close the gaps that let sound and hot air through, and double-glazed or acoustic glass makes the biggest difference to noise and heat through the glass. For a home on a busy road, we usually suggest acoustic or double-glazed units.

uPVC is rigid unplasticised PVC, made into hollow multi-chamber profiles and reinforced with steel, and it is mainly used for windows and glazed doors. WPC is wood-plastic composite, a mix of wood fibre and plastic usually used for solid door shutters and frames. For windows and glazed doors that must seal against rain, uPVC is the more usual choice.

uPVC stands for unplasticised polyvinyl chloride. It is a rigid, weather-resistant form of PVC, without the softeners used in flexible plastics. For windows and doors it is extruded into hollow multi-chamber profiles, reinforced inside with galvanised steel and welded at the corners. The result is a frame that insulates, seals tightly and does not rust, rot or need painting.

Ordinary PVC often contains plasticisers that make it flexible, as in cables, hoses or some pipes. uPVC is unplasticised, so it stays rigid and stable, which is what a window frame needs. uPVC window profiles are also made with additives that help them withstand sunlight. For windows and doors, you should always ask for uPVC profiles with steel reinforcement.