Drapehaus
Drapehaus
Preparing the room
Drapehaus
Preparing the room
Problem
Wooden venetian blinds and timber shutters look right in a Goan house, which is exactly why they get specified. Unfortunately two things in this climate work against them: humidity that swings dramatically between seasons, and termites, which are endemic across the state.
By the Drapehaus studio · 19 September 2026 · How we write
Neither makes timber impossible, but both change what kind of timber is sensible and where it should go. The failures we see are almost always in rooms where real wood was the wrong call — kitchens, bathrooms and anywhere against an external wall that gets damp in the rains.
Wood takes up and gives off moisture with the surrounding air, and it does not do so evenly. A thin slat exposed to sun on one face and room air on the other absorbs differently on each side, and the result is a cup or a twist that no adjustment corrects.
Goa is harder on timber than most places because the swing is so wide. The relative humidity difference between a January afternoon and an August morning is enormous, and slats cycle through that every year.
Well-seasoned hardwood with a proper factory finish on all faces — including the edges and the cord holes, which are usually where moisture gets in — copes far better than lower-grade alternatives. Unsealed or partly sealed slats will warp, usually within two seasons.
Termites need moisture and darkness, and they travel from ground contact or from adjacent timber. A blind hanging in a dry, well-lit, well-ventilated room is not a typical target. A timber blind stored in a cupboard over the monsoon, or one fitted against a damp external wall in a rarely used room, is a far better one.
The risk is not evenly distributed and it is worth being clear about that rather than alarmist. Ground-floor rooms, external walls and anything adjoining existing timber structures carry meaningfully more risk than an upstairs bedroom.
Treated timber helps. So does keeping blinds off damp surfaces, ensuring nothing bridges from soil or masonry to the timber, and inspecting rather than assuming. Mud tubes on a wall near a window are the sign to look for.
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Faux-wood blinds in PVC or composite have improved to the point where the difference at normal viewing distance is small, and in a bathroom, kitchen or coastal property they are unambiguously the better choice. They do not warp, they do not feed termites, and they wipe clean.
The honest drawbacks are weight and warmth. Composite slats are heavier than timber, which matters on wide blinds, and they lack the depth of real grain when you are standing close.
Aluminium venetians are the third option and the most durable of all, particularly near the sea. They have a more utilitarian character that suits some rooms and not others.
Where a client specifically wants real wood, we will fit it — in a dry upstairs room, in sealed hardwood, away from external walls. Elsewhere we will say why we think it is a poor idea.
Before specifying timber anywhere, we look at the house around the window. Mud tubes running up walls, along skirtings or around window frames are the clearest sign of active termites. Soft or hollow-sounding timber in door frames, skirting boards or furniture, small piles of fine debris, and wings near windows after the first rains are all worth noting.
Moisture is the next thing to check. Damp patches on walls, leaking gutters, poor drainage near foundations and gardens or planters built against external walls all create conditions termites favour. A window in a dry, sound wall carries much less risk than one near a damp corner. Where there is evidence of termites, the house needs treatment by a pest-control professional before any new timber is introduced.
Where real timber is chosen, species and finish matter. Dense, naturally durable hardwoods resist both moisture movement and termites better than softer, lighter woods such as basswood, which is common in imported wooden venetians. Well-seasoned timber with low moisture content at the time of manufacture moves less once installed. The finish must cover every surface: both faces, the edges and the cut ends of slats, and the holes where cords pass through. These unsealed areas are where moisture enters first. Factory-applied finishes are generally more consistent than site-applied ones.
Timber blinds are also better suited to narrower windows, where each slat is shorter and less likely to twist. On a wide window, two timber blinds side by side are more stable than one long one. They also allow one half to be raised for light while the other stays down for shade, which suits the way Goan rooms are used through the day.
Many Goan houses have timber shutters and frames that have lasted for generations. These are usually dense, locally used hardwoods such as teak, and they have survived because they are thick, well-made, regularly oiled or painted, and exposed to air and light. They are a different case from thin, lightweight slats.
Where original timber shutters exist, keeping them in good condition is often better than adding a new treatment. Regular inspection, repainting or oiling, and prompt repair of any damage protect both the shutters and the frame around them. New timber shutters can be a good choice in a heritage-style house, provided they are made from suitable hardwood, properly finished and fitted where they can dry out after the rains.
Timber moves most as the seasons change. Through the monsoon from June to September, when humidity is at its highest, wood swells; through the dry months, particularly the drier afternoons from December to March, it gives up moisture and shrinks. Slats, shutters and frames can stick in the rains and loosen in the dry season.
Termite activity also follows the rains. The first heavy rains of the monsoon often bring swarms of winged termites looking for new sites, which makes the weeks before and after onset a good time to inspect windows and timber. A check after the rains withdraw in October catches any damage done during the wet months.
In a let property or a house that closes for the monsoon, timber is at greater risk because nobody notices early signs. A timber blind in a closed room for four months sits in damp, still air, which encourages warping, mould and termites. Faux wood, aluminium or fabric blinds are generally better suited to these properties.
Where timber is part of the character of a holiday home, choose it for the rooms most in use and with the best ventilation, and give the caretaker a simple routine: open shutters and blinds on any dry day, look for mud tubes, and report anything unusual rather than waiting for the next visit.
Diagnosis
WhyUneven moisture uptake between the sun-facing and room-facing surfaces, cycling through Goa's wide seasonal humidity range.
FixFully sealed seasoned hardwood including edges and cord holes, or move to faux wood in high-humidity rooms.
WhyStored in a dark, damp cupboard over monsoon — close to ideal conditions for them.
FixStore timber dry, ventilated and off the floor, or specify materials that are not a food source.
WhySustained high humidity plus direct splashing. Real wood is simply the wrong material there.
FixFaux wood or aluminium. In a bathroom this is not a compromise; it is the correct specification.
WhyComposite slats are heavier than timber and deflect over a long span.
FixSplit into two blinds, or use aluminium, which is lighter and stiffer for the same slat width.
WhyThe timber has absorbed moisture and swollen, and the clearances around the shutter are too tight for the seasonal movement.
FixEase the shutter slightly once it has dried, then seal all faces, including the edges, so it takes up less moisture next season.
WhyTermites are travelling from the ground or the masonry to reach timber, often through a damp wall.
FixCall a pest-control professional before replacing anything, remove the source of damp, and avoid introducing new timber until treated.
WhyDamp, still air in a closed room allows mould to grow on the finish and in the grain.
FixClean with a mild solution, dry thoroughly, and ventilate. For houses that close, consider faux wood or aluminium instead.
Checklist
Never specify real wood in a bathroom or kitchen here
Insist on sealed edges and cord holes, not just faces
Keep timber away from damp external walls and ground contact
Look for mud tubes near windows during the rains
Store timber blinds dry, ventilated and off the floor
Split wide faux-wood blinds rather than accepting sag
Look for mud tubes and damp before specifying any timber
Choose dense, well-seasoned hardwood where real timber is chosen
Keep original shutters painted or oiled and inspected yearly
Avoid real timber blinds in houses that close for the monsoon
From the Journal
All articlesFAQ
Frequently, unless they are well-seasoned hardwood sealed on every face including the edges and cord holes. Goa's humidity swing between January and August is very wide, and a slat that absorbs unevenly on its two faces will cup or twist permanently.
In some situations. A blind in a dry, bright, ventilated upstairs room is not a typical target. One stored in a dark damp cupboard over the monsoon, or fitted against a damp external wall in a rarely used ground-floor room, is a much better one. Risk is not evenly spread.
In a bathroom, kitchen or coastal property, better — they do not warp, do not attract termites and wipe clean. At normal viewing distance the difference is small. Real wood still wins on grain depth close up, and composite is heavier, which matters on wide blinds.
Faux wood or aluminium venetians, or a PVC-coated roller. Real timber in a bathroom will swell, stiffen and eventually fail. This is one of the few cases where there is a clearly correct answer rather than a preference.
Look for mud tubes on walls or around the frame, timber that sounds hollow when tapped, soft areas that give under pressure, small piles of fine debris, and discarded wings on sills after the first rains. If you find any of these, have the house inspected by a pest-control professional before replacing or adding timber.
Bamboo is also a food source for termites and absorbs moisture readily, so it carries similar risks to timber in humid conditions. Treated bamboo blinds in a dry, well-ventilated room can last well, but they are not a good choice for bathrooms, closed houses or damp external walls.
A durable, factory-applied lacquer or paint that covers every surface, including the edges, ends and cord holes. Unsealed areas let moisture in and cause uneven swelling. Oil finishes look natural but need regular renewal. Whatever the finish, keep blinds away from damp walls and ventilate the room.
Rarely in a lasting way. Slight cupping may ease as humidity drops, but twisted slats usually stay twisted. Individual slats can sometimes be replaced from spare stock. If many slats have warped, the cause is usually the room or the timber, so replacing the blind with faux wood or aluminium is the more reliable solution.
For durability, yes. Aluminium does not warp, does not attract termites and, when properly coated, copes well with humidity and salt air. It is lighter and stiffer than faux wood, so it suits wide windows. The trade-off is character: it looks crisper and more utilitarian than timber, which suits some rooms far better than others.
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