Birdhaven Blinds: Close Quarters Questions on Light and Privacy

Because in Birdhaven the sun arrives twice. On a subdivided stand the west-facing room gets the low afternoon sun from the sky and then whatever the pale plastered wall or paving a few metres away sends back at the glass. A straightforward sunscreen cuts the direct glare and keeps the garden view, but reflected heat off a nearby wall can push more afternoon sun into a room than the window alone suggests. That is why we often recommend a blockout layer behind the sunscreen on west-facing rooms, on a double bracket, rather than a sunscreen on its own. Standing in the room late in the day tells us which it needs.

Stop the sun before it reaches the pane. Late sun comes in under every eave at the hottest part of the day, and an interior blockout stops the light but not the heat: the pane has already taken the energy and goes on radiating it inwards. External roller shutters and zip screens intercept the heat outside the glass, and the west is the one elevation where we routinely argue for that. The catch is that external work is a bigger job, with a sound substrate, a visible headbox, usually a power route and a life out in Highveld hail. On a rented house or a tight budget, an interior blockout is the sensible answer and we will say so.

Sometimes not. At the December solstice the midday sun over Johannesburg reaches about 87 degrees, within a few degrees of straight overhead, so a decent eave or slab overhang already does most of the summer work on a north elevation while letting the low June sun, at around 40 degrees, straight in. North is the easy wall. We specify it for glare and privacy rather than heat: a higher-openness sunscreen, or nothing at all on a well-shaded window. The one thing we would talk you out of is heavy blockout there, because you would be paying to lose the winter warmth you want.

A fitting problem, mostly. East glass takes the same low angle as the west, but the house is cold overnight so heat is not the complaint; being woken at sunrise is. East bedrooms are the strongest case for genuine blockout, and every blockout fabric is already opaque. What wakes you is the edge leak: an inside mount sits neatly in the recess with a thin bright line down either side, while an outside mount fixed across the whole opening gives fuller coverage and a properly dark room. If the edge leak is what wakes you, ask for the outside mount at the measure, and remember that a day/night blind is not a blockout.

A day/night zebra blind, because here the right answer changes hourly. Alternating sheer and solid bands run on one continuous loop: line them up for filtered daylight with a sense of privacy, offset them for near-solid cover. Where a neighbour's window, a driveway or a shared boundary wall sits a few metres away, that band-by-band trade beats fabric quality every time, and you can hold the room at private but bright for most of the day. The honest catch is that it is not a blockout: closed, a little light passes at the band edges, and at night with the lamps on silhouettes read from outside. Day/night for living areas, blockout for bedrooms.

We specify for sightlines as much as for sun. Open-plan kitchens and living areas are the Birdhaven norm, so one wrong blind is visible from two or three rooms, and a run of roller blinds across a living and dining space has to read as intentional rather than bolted on. Cassette or pelmet valances hide the tube completely and the fascia is colour-matched to your frames; day/night blinds have become the default for open-plan spaces where the look needs to be considered rather than fussy. In cluster and complex developments a uniform, tidy street front is often part of the body corporate brief too, which we check before anything is ordered.

Not quite. For most Birdhaven stands, south glass takes no winter sun and only glancing early and late sun in December, so it is a privacy question rather than a glare one, with the neighbour's gable usually a few metres away. Park-edge houses along James and Ethel Gray Park are the exception: no neighbouring wall, long open exposure, and a view worth keeping. There we would lean toward a sunscreen that holds the view, and we would size anything outdoors, such as an awning or zip screen, against the real wind exposure of a corner open to the park rather than a courtyard hemmed in by walls.

Mention it when you enquire, and we check it before quoting anything else. Because so much of Birdhaven's housing stock is a recent renovation or rebuild, we regularly walk into a home and find a ceiling recess or bulkhead already framed for a concealed blind that was never fitted. Using a recess that exists beats face-fixing onto finished plaster, and finishing that detail is one of the more satisfying jobs on our books. The fabric drops from the slot with no headbox and nothing interrupting a frameless opening, and the system is almost always motorised, since reaching a hand into a ceiling slot defeats the purpose. We confirm what system the recess was built for first.

Inside the room, no. Under the National Heritage Resources Act nobody may alter a structure, or part of one, older than sixty without a permit from the provincial heritage resources authority, and alter covers works affecting a building's structure or appearance. Age alone triggers it; the house need not be listed, and Birdhaven was proclaimed in the late nineteen-forties. A blind hung inside a room is not that kind of alteration. Cutting a reveal, chasing a soffit for a ceiling recess or fixing external hardware to an original facade is where a call to your architect or the provincial authority belongs first. We flag it; we are blind makers, not heritage consultants.

Usually the body corporate. Birdhaven is a proclaimed suburb, not a gated estate, so no architectural committee sits over it and we are not going to invent one. But where a stand has been subdivided into a cluster of units, anything changing the outside face of the building, a roller shutter headbox, an awning or a zip-screen channel, is usually the body corporate's business as well as yours. Interior blinds are not. Ask before you order: a five-minute email saves a fortnight. At the measure we tell you which options on your list touch the outside so the right question reaches the right person.

No. Ours are shading roller shutters: rigid aluminium slats running down guide rails from a slim headbox outside the window, for sun, heat, glare and privacy control before the glass. They are not security-rated, that is a different product available on request, and we will never imply one does the other's job. They earn their place on a west room that is unusable from four o'clock, where stopping the heat outside beats darkening the room without cooling it. Being an exterior product, they want a sound substrate, a visible headbox and usually a power route, and anything living outside through a Highveld storm season should be retractable rather than left out for a hailstorm's opinion.

Because the windows are from different eras. Houghton Estate and Saxonwold still carry heritage sash frames, steel casements and deep-set openings built to older proportions, and on those a timber venetian respects the frame in a way a flat modern roller usually cannot, with a cellular blind doing the same job more softly where insulation matters. Older Saxonwold homes rarely have standard-sized openings, so made to measure is the only way anything fits. Birdhaven's renovated glass and double-volume rooms want the opposite: rollers, day/night blinds and concealed systems. Where a heritage house has a contemporary extension, the new wing gets the modern treatment and the old section keeps its softer one.

Yes, and up there it is less a luxury than a practical necessity. In the apartment blocks closer to the Arch, floor-to-ceiling glazing several storeys up makes motorised roller blinds and motorised day/night blinds the standard ask, because nobody wants to reach a chain across a wall of glass on the fourteenth floor. One remote or app running every blind in the unit is the usual brief, and apartments overlooking the precinct tend to want evening privacy without losing daylight, which a day/night blind or a mid-range sunscreen handles without committing to blockout on the windows that are the unit's main feature. Power is either a wired motor or a rechargeable battery tube, decided at the measure.

Five things, each measured or tested in the room. The reveal depth to the millimetre, because renovated openings run a few millimetres off the plan and that decides whether a blind sits inside and how much light leaks down the sides. What is actually behind the plaster, whether brick, block, a steel lintel, a drywall bulkhead or a void, which we tap and check rather than guess. Where the reflected heat is really coming from, since wall colour, paving, pool position and the neighbour's distance all bounce light differently. Wind exposure on anything outdoors. And whether motor power can get there sensibly, which is straightforward above a renovation bulkhead and much less so into a finished double-volume wall.