In a humid climate, how do uPVC and wood compare? Humidity is timber's weak point.
Timber windows look beautiful and have real character, but wood absorbs moisture — so it swells, warps, and eventually rots. It also needs regular painting or sealing to hold off that decay, and termites will target it.
uPVC absorbs almost no water, so it won't swell, warp, or rot. It needs no painting, and termites have no interest in it.
Humidity is precisely where timber struggles — it absorbs moisture, swells, and sticks, and prolonged damp turns to rot. That's why monsoon is when we get the most calls about wooden windows that won't close.
Poorly — it absorbs moisture, swells, and sticks, and prolonged damp leads to rot. Monsoon is when wooden windows most often jam.
Yes — it absorbs almost no water, so it won't swell, warp, or rot. It stays true through monsoon.
The timber has absorbed moisture and swollen. It's the classic sign of wood in a humid climate.
Related guides covering this topic from other angles — different products, applications, or contexts.
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