Riverside Home

Light bouncing off a river arrives at the ceiling and upper walls, and it moves. It is the single best feature of a riverside room and the easiest to destroy with a heavy treatment.

The approach that works is to keep the upper portion of the window permanently clear and control only the lower part. A sheer on the lower half, a café curtain, or a bottom-up blind all preserve the ceiling-bounce while handling privacy from a path or jetty.

Where full curtains are wanted for the evening, hang them high and wide enough to clear the glass entirely during the day. On a riverside window that is not an aesthetic nicety, it is the whole point.

We try to visit a riverside house twice: once in daylight to see how the reflected light moves across the rooms, and once at dusk to see where the insects come in and which windows the family actually closes. The dusk visit usually changes the plan more than the daytime one, because it shows which openings need screening and which can stay simple.

Inside, we look for the evidence of persistent humidity: grey spotting on the backs of existing curtains, mould at the top corners of external walls, swollen door frames and rust on hinges. These show where air is stagnant and which walls stay cool and damp. Those are the positions where fabric must hang well clear and dry out between uses.

Outside, we note the path, jetty or neighbouring bank that overlooks each window, and at what height. Privacy beside a river is usually about sightlines from below or across the water, not from a lane, and that decides whether a lower-half treatment is enough or a full curtain is needed at night. A lit room beside dark water is visible from a long way off.

The US Environmental Protection Agency advises keeping indoor relative humidity below 60 per cent, and warns that sustained levels above that tend to lead to condensation and mould. Monsoon humidity in Goa runs between the low eighties and the low nineties for weeks on end, and beside a river the dry months bring less relief than on higher ground. Fabric in these rooms lives above the mould threshold for much of the year.

That does not make curtains impossible, but it changes how they must be used. Air has to move behind them, they should be drawn right back during the day, and they need washing more often than in a drier house. A dehumidifier in a closed bedroom, or air-conditioning that removes moisture as it cools, makes a substantial difference to how long fabric lasts.

Leaks need fast action. The EPA's guidance is that drying wet materials within 24 to 48 hours usually prevents mould from establishing. A curtain soaked by a window leak or a burst of monsoon rain should be taken down and dried immediately, not left hanging to dry in a room that never really dries. The same applies to anything stored in a cupboard on an external wall.

Screen mesh comes in several materials, and the choice matters near water. Fibreglass mesh is flexible, does not corrode and is easy to replace, but it tears more readily and can sag over time. Aluminium mesh is stiffer and clearer to look through, but in brackish or tidal air it can corrode. Stainless steel mesh is the most durable and the most expensive to install, and suits windows that take real wear.

The operating system matters as much as the mesh. Pleated retractable screens fold away when not needed and share a head detail with the curtain. Sliding screen panels work well on sliding windows and doors. Fixed frames are simplest and most robust on windows that are never closed. Magnetic and hook-and-loop screens are useful as a temporary measure but rarely survive a monsoon in good order.

Whichever is chosen, frames should be powder-coated or anodised and fixed with stainless screws, because the same humidity that affects curtains will corrode a mild steel frame within a couple of seasons. Screens also collect dust, pollen and insects, which hold moisture against the mesh, so a gentle wash at the end of each monsoon and again mid-way through the dry season keeps them clear and extends their life. Check the edge seals at the same time, because a gap of a few millimetres lets insects straight past an otherwise sound screen.

The monsoon, from early June to mid-October, brings the river up, the humidity to its peak and long stretches of overcast sky. Reflected light fades on cloudy days, so rooms feel darker and keeping the upper glass clear matters even more. Heavy curtains are best tied back for the season and only drawn when needed. Ground-floor hems should be lifted clear of any floor that takes water.

The weeks after the rains are often the worst for insects, with standing water everywhere and warm evenings. Screens should be checked, cleaned and repaired before then, and any curtain that has to be moved aside to reach a screen should be rethought. Mould spotting from the monsoon shows up now too, and it is the right time to wash or replace affected panels.

The dry season is for installation and larger changes. Walls are drier, fixings bed in properly, and the long clear months show how the reflected light actually moves through the house, which is the best guide to where a treatment should and should not go. Screens and curtains planned together in those months are ready before the rains return, and nothing has to be fitted into wet masonry.