Mouille Point Blinds: Questions From the Promenade

On a low floor you are not looking at a view so much as sharing a room with a street. The paved walkway between the buildings and the water is one of the most-used pieces of open space in the city and it does not close: joggers before sunrise, families all afternoon, dog walkers and couples well into the evening, with a pane of glass and a few metres of paving in between. So almost every Beach Road brief is two briefs at once: keep the bay, lose the audience. Higher up, the audience disappears and the exposure takes over, and both halves of the suburb are specified accordingly.

Nothing went wrong with the fabric. A sunscreen mesh works on a difference in brightness: during the day the outside is far brighter than the inside, so you see out clearly and passers-by see reflected sky. Switch a lamp on after sunset and the difference reverses. Now the room is the lit side, and the same mesh is close to transparent from the path. No openness escapes this. Any window overlooked by the walkway needs two states, an open layer for the day and an opaque one for the evening, and you can test it yourself in twenty seconds by standing on the path after dark and looking back at your own window.

Because on this road the room is lit from three directions and only one of them is above you. Direct sun from the sky is the obvious one. Table Bay is a large flat moving mirror in front of you that throws light back upward, under an overhang, under a balcony slab and under the bottom rail of any blind pulled halfway down; it is the complaint we hear most often here. And pale paving, white parapets and the building opposite return a diffuse second-hand light off the street. The habit that answers it is to run the fabric the full height of the opening rather than stopping at the top of the view.

Winter, which is backwards from what most people expect on a coastal street. At the December solstice the Cape Town sun sets on a bearing of roughly 240 degrees, south-west, which from here is inland behind the buildings. At the June solstice it sets around 297 degrees, north-west, straight down the open bay, so a low sun and an unbroken run of water land almost exactly in the middle of a sea-facing window. Between the two dates the sunset point walks nearly sixty degrees along your horizon. A flat with glass on two elevations often has one problem window in February and a different one in July, so note the date and time the room becomes unusable and tell us.

Not the summer south-easter everyone talks about but the winter one, from the opposite quarter. Table Bay is open to the north and north-west, exactly where the Cape's winter fronts arrive, and for much of the colonial period shipping was moved out of this bay for the winter because the north-westerly gales made the anchorage dangerous. Your balcony stands in that weather. Three rules follow without exception: outside, the fabric is captured in aluminium side channels on both edges; anything that retracts gets a wind sensor; and inside, a weighted bottom rail or slim side channels stop a blind knocking against the reveal of a window you like leaving open.

No, it just gets a different dose. Salt leaves the surf as a fine airborne mist and the wind carries it up the face of the building, across the road and onto the inside of a bracket you will never look at. So the coast is specified into everything fitted here: powder-coated aluminium rather than painted steel wherever outside air reaches it, closed heads and sealed cassettes on exterior products, coastal-grade fixings as standard, and glass-fibre-cored sunscreen mesh that does not stretch when damp. Then one job from you: rinse anything exposed with fresh water a few times a year and wipe the head rail. Nothing on this coast is maintenance-free, and we say so.

Partly. Warm indoor air carries moisture, sea air supplies it generously, and glass is the coldest thing in the room, so air that touches it gives up its water; that is all condensation is, and it is common in older single-glazed blocks. Habits do most of the work: an extractor that vents outside, lids on pots, no washing drying behind a closed door, a window cracked open morning and evening. A cellular honeycomb fabric drawn down inside the reveal overnight keeps the warmth on the room's side and takes the chill off the glass. It does nothing for a damp wall or a failed seal; those belong to the building, and you will be told so rather than sold fabric.

Because a loose drop screen flaps and works its way out of its guides the first time the south-easter or a winter north-westerly gets under it, which on an exposed Mouille Point balcony is most weeks of the year. A zip screen welds the fabric edge into a zipper that runs captive inside an aluminium channel on both sides, so there is nothing loose for a gust to lift. Closed, the sunscreen mesh cuts wind, glare and ultraviolet while keeping the view; a clear PVC panel seals the same opening against wind and rain on a cold evening. The higher the floor, the stronger the wind rating specified. If an opening cannot take channels, we propose something else.

Edges, not a heavier cloth. Every blockout fabric is opaque, so what wakes you is the light at the sides of the blind, and on a room facing the promenade's street lamps and the harbour's glow that strip of light is enough. The answer is side channels on the reveal, settled by measurement at the window rather than by fabric choice. Where the same bedroom also faces the sea, a double roller puts mesh for the day and blockout for the night on one bracket, each on its own tube, which is the usual pick for a room that is a lounge at noon and a sleeping space at eleven.

Either gives the two states the walkway demands, and the choice depends on the opening. Day and night bands set to sheer give privacy from anyone at the same height with the horizon still there, and slide a few centimetres to close right up for the evening; it is the product we reach for most often on promenade-facing windows. Vertical vanes suit a full glass wall with sliding doors: turned to an angle they cut the sightline from someone walking past while leaving the flat its light and its water, and they draw fully aside when the doors are open. Both come to the measure as real samples held against your own glass.

Exterior shading is the most capable thing fitted here, because heat stopped in open air never becomes heat in the room. An external slat blind lets you angle the slats and keep the view beneath them; a roller shutter closes the opening for full sun, glare and privacy control from outside the glass, and it is a shading product, not a security one. Both change the outside of the building, and on a sectional-title block that is common property, so they are drawn, specified and agreed with the trustees first. The written specification is handed over in a form you can give to the body corporate, and nothing is ordered until that is resolved.

Battery, as the first question. Most work here is inside an existing unit rather than a ground-up build, and a rechargeable tubular motor inside the roll needs no chasing of walls, no electrician and no body-corporate application for new wiring; it tops up every few months and gets a wide sea-facing wall of blinds onto one remote without touching a wall. Wired motors suit a full renovation, a double-volume opening or a heavy exterior product that would drain a battery, and on a sectional-title building that usually means a conversation with the managing agent before an electrician. Anything outside gets a wind sensor regardless.

Three things, and they usually change the answer. What the opening will actually hold: a frame you can fix a screen to, a slab edge with sound structure behind it, or plaster patched three times each dictates a different fixing and sometimes a different product. What your building already permits, since many schemes along this road have long-settled rules on colour and profile for anything visible from outside. And exactly when the room stops working, the date and the hour rather than the afternoon. Real swatches come to the flat, because a mesh held up against bay light behaves nothing like the same mesh on a screen.

Often, yes. If the tube and brackets are sound, new fabric onto existing hardware is a fraction of a full replacement, and rollers are the easiest product to motorise, repair and re-fabric later, which matters in buildings where blinds outlive tenants. Salt-corroded components are the usual disqualifier this close to the bay, with pitted brackets and seized chains the giveaway, and the consultant will tell you plainly which side of that line your blinds fall on. Repairs to existing blinds are requested through the same form and chat as a new measure.