Fluted Wall Panels for Texture and Rhythm

The single most important design decision is the scale of the rib. Narrow flutes read as a fine texture from across the room and suit small walls, furniture fronts and close viewing. Wider ribs read as distinct lines and suit large walls, double-height spaces and rooms seen from a distance. A fine flute on a very large wall turns into a grey shimmer; a broad rib on a narrow column looks clumsy.

Depth matters as much as width. Shallow grooves give a soft texture that almost disappears in flat daylight. Deeper grooves throw a stronger shadow and stay visible in daylight, but collect more dust. We look at the wall in the light it actually gets, often holding a sample against it in the morning and late afternoon, before settling on the profile.

Many Goan houses are built of laterite, which is porous and can carry moisture from the ground and from driving rain on the outer face. Before any panel goes up we check the wall with a moisture meter and look for tide marks, flaking paint, salt bloom and a musty smell. A wall that reads damp is diagnosed first: a leaking gutter, a failed external coating or rising damp has to be dealt with, because no cladding fixes it.

On a dry, flat wall, PVC and WPC fluting can be fixed directly with a suitable adhesive and clips. Where the wall is uneven, slightly suspect or simply old, we fix treated or composite battens first and mount the panels on those. That leaves a ventilation gap behind the cladding so air can move and any moisture can escape rather than being sealed against the plaster. For MDF and timber fluting, battens and a gap are not optional.

Fluting looks finished or unfinished at its edges. Where the panel stops in the middle of a wall, it needs an end trim, a mitred return or a clean stop against a contrasting surface. At an external corner the flutes can be mitred so the rhythm wraps round, or capped with a profile that suits the material. At internal corners, the layout should be set out so the last flute is not a thin sliver.

Sockets, switches and AC pipes are the other trap. A switch plate sitting half on a rib and half in a groove never looks right. We set out the panel joints first, then move or extend the electrical points, or build a flat zone where a cluster of switches has to live. This is far easier to decide before the panels are cut than after.

Fluting is made by light. A strip of LED in a recess at the top or bottom of the wall, washing along the surface, gives a strong rhythm of highlight and shadow. Light from directly in front flattens it. Warm white flatters timber tones; a neutral white suits pale painted or grey fluting.

Keep any light source clear of the panel surface. PVC and the films on composite panels do not like sustained heat, and halogen or poorly ventilated drivers tucked behind a panel can discolour or distort it. Modern LED strip in an aluminium channel runs cool enough, but the driver should sit where it can be reached and has air around it.

In a house shut for weeks in July, the air inside sits near saturation. PVC and WPC fluting are unaffected in themselves, but the grooves can grow a faint bloom of mould on dust and skin oils, especially in a dark room. A quick brush down before the house is closed, and a dehumidifier or occasional airing, keeps it clean.

Near the sea, salt settles in the channels and draws moisture, so the flutes can stay damp longer than a flat wall. Wipe them more often in sea-facing rooms. Metal end trims and fixings should be aluminium or stainless; plated steel will rust and stain the edges within a season or two.