Guides

The best blinds for Bangladesh weather: heat, humidity and monsoon

Which materials survive a Dhaka monsoon, which fabrics cut heat on a west window, and which blind will warp within a year if you put it in the wrong room.

Most blind advice online is written for climates that do not have a monsoon, a 38-degree April, or a humidity level that keeps a damp cloth damp all day. Here is the version that applies here.

Heat first: stop it at the glass

A blind cannot cool a room. What it can do is slow the heat arriving through the window, and where the blind sits changes how well it does that.

Outside the glass is best. A verandah chick blind or a bamboo roll-up stops sunlight before it reaches the pane. Once light is through the glass, the heat is already in the room and the blind is only stopping the glare.
Inside, a honeycomb blind does the most. The cells hold still air against the glass, and still air conducts heat poorly. On a west-facing window that bakes from three o'clock, a double-cell fabric is the strongest single upgrade available.
Sunscreen mesh helps at the window you cannot cover. It cuts a useful share of the solar gain while keeping the view, so a living room with a good view does not have to choose between the two.

Humidity and monsoon: choose the material, not the colour

This is where blinds actually fail in Bangladesh, and it is almost always material choice.

Safe anywhere, including a wet window: PVC and aluminium slats, PVC vertical louvres, polyester roller and zebra fabrics. All of them wipe clean and none of them swell.

Keep away from rain: natural wood. Repeated wetting bows a timber slat and a bowed slat cannot be straightened. If the window takes monsoon splash, specify faux wood — it looks the same and ignores water entirely.

Handle with care: bamboo tolerates humidity but not soaking. Roll it up before heavy rain, and never roll a wet bamboo blind up and leave it, which traps moisture between the reeds.

Never machine-wash blackout fabric, whatever the room. The light-blocking coating on the reverse cracks and the blind is finished.

The room-by-room answer

| Room | What we would fit | Why | |---|---|---| | Kitchen | Aluminium venetian or PVC vertical | Steam and grease; both wipe clean | | Bathroom | PVC venetian | Completely waterproof | | Bedroom, west-facing | Blackout roller, or blackout honeycomb | Darkness plus heat control | | Living room with a view | Sunscreen roller or zebra | Glare cut, view kept | | Balcony | Bamboo roll-up | Shade with air still moving | | Open verandah | Chick blind | Stops heat outside the glass |

Two habits that double the life of any blind

Vacuum monthly. Dhaka dust is relentless, and a dust layer left on fabric becomes a grey film that spot-cleaning will not lift.

Never roll or fold a damp blind. Whether it is fabric, bamboo or a honeycomb cell, moisture trapped in a rolled blind is what produces both the streaks and the smell. Leave it fully lowered until it is dry.

Frequently asked questions

Which blinds survive Dhaka humidity and monsoon splash?

Anything that does not mind getting damp: PVC and aluminium slats, PVC vertical louvres, and polyester roller fabrics all wipe clean and do not swell. Natural wood is the one to keep away from a window that takes rain, because repeated wetting warps the slats — faux wood gives the same look without that risk. For a bathroom or an open balcony, PVC or aluminium is the safe answer.

Does a honeycomb blind really reduce heat?

The mechanism is real: the cells hold a layer of still air against the glass, and still air is a poor conductor, so heat crosses the window more slowly. What that is worth depends on your window — a west-facing pane in full afternoon sun benefits far more than a shaded north window, and a double-cell fabric does more than a single. It is a genuine improvement in comfort and AC cycling, not a replacement for the AC.

Natural wood or faux wood — which should I choose?

Choose by the window, not by the price. Natural wood is lighter, has genuine grain and suits a dry living room or bedroom. Faux wood is a moulded composite that ignores humidity completely, so it is the right answer for a kitchen, a bathroom, or any window that takes monsoon splash — the same conditions that will eventually bow a real wooden slat. Faux is heavier, which matters on a very wide window where the total weight adds up.

Will the fabric fade in direct Dhaka sun?

Every fabric fades eventually under direct sun; the question is how fast and how evenly. Solution-dyed polyester and sunscreen mesh hold colour far better than printed cotton-look fabrics, and mid tones show fading less than deep navy or black. A west or south-west window is the harshest position in a Dhaka flat, so if that is where the blind goes, choose a lighter mid tone and expect the visible side to soften slightly over several years rather than patch unevenly.