Patio door blinds

Every hour, at full size

Take the problems this site sorts by hour and run them through the largest pane in the house. The two o’clock glare is not a stripe here, it is a climate — a patio door usually faces the garden, which usually means south or west, and on a summer afternoon it is a radiator running in reverse. The seven o’clock sun enters at floor level and crosses the whole room. And at ten, no window in the house shows more of your evening to the outside.

So the door needs everything a big window needs. But designing for those hours first is exactly how patio doors end up with the wrong blind — because the door has one requirement that outranks light, heat and privacy put together, and it is the reason this page exists apart from the ordinary product pages.

The requirement that does the choosing

The door opens. Several times a day, in season — hands full of barbecue plates, a dog underfoot, a child mid-sprint. Whatever covers the glass is standing in a doorway, and a doorway judges everything by one standard: how fast it stops being covered.

Run the range past that test and most of it leaves the room. A covering that must be fully raised before anyone can walk through fails by the second day — it will simply be left up, permanently, and the money spent on it becomes a pelmet. The standard venetian fails hardest of all: it stacks the wrong way, hangs exactly where the sliding panel travels, and collects damage the way doorways collect traffic. We remove more venetians from patio doors than we could ever be paid to put on.

What passes the test is anything that moves aside rather than up. Sideways is the whole secret of this page.

The three that live comfortably on a door

Vertical blinds. The purpose-built answer. One draw clears the doorway; the tilt manages light without moving the vanes off the glass; width is no enemy, because the track carries the weight. Their limits: the joins between vanes pass seams of light, so they cannot make a bedroom dark, and their look is a strong flavour — some rooms want it, some do not. The mechanism itself has its own page: vertical blinds.

Panel track. The same sideways logic in a calmer form — broad flat panels gliding behind one another on a multi-channel track. It carries any fabric in the book, including full blackout, and it reads as architecture rather than window furniture. Its cost is parking space: the stacked panels need somewhere to be, on wall or over the fixed pane, and that is a measured decision rather than a hopeful one.

A wide roller. The exception that proves the rule. It stacks upward — and it earns its place only on doors where opening is rare: the dining room onto the deck, the door used eight weekends a year. In exchange it offers the cleanest sightline of the three and the only true blackout. On the family’s main route to the garden it is the wrong answer, and we say so before quoting it.

The panel that moves, and the side that parks

A sliding door is half fixed, half moving, and the covering’s drawn stack belongs in front of the fixed half — always. Parked over the slider, it stands in the doorway’s way forever, which defeats the entire sideways argument. It sounds too obvious to state; it is the most common fault we inherit from other people’s installations.

Which half is fixed is not always obvious from indoors, and “the blind should stack on the left” means nothing until someone says which side of the glass they are standing on. At the measure we operate the door and settle it in seconds — direction of draw, side of stack, and how the handle’s swing clears the fabric. Three small facts, and the difference between a door that works and a door that argues.

When the door is a bedroom wall

Condos hand many bedrooms a balcony door instead of a window, and the door’s usual answers stop being enough — a vertical’s seams of light are charming in a lounge and hopeless at six in the morning.

For a sleeping room the covering has to close to real dark and still release the door on demand. Two arrangements do it: a wide blackout roller mounted above and beyond the frame, oversized so the edges go quiet, raised fully on the mornings the balcony is in use; or a panel track in blackout fabric, which keeps the sideways convenience and closes tight enough for a bedroom. Which one wins usually comes down to how often the door opens — the roller suits the door used sometimes, the track suits the door used daily.

Measured as a door, not as a glass

The visit treats the door as machinery. We slide it, note which panel moves and where its handle swings, measure the clear wall on both sides, and ask the question that decides more than any measurement: how many times a day does someone walk through here, and in which months?

From that, the product usually chooses itself, and what remains is fabric — openness against the afternoon, opacity for the evening, blackout if a bed is behind it. The quote records the draw direction and the parking side in writing, because those are the two decisions nobody should discover on installation day. The measure costs nothing, and it is the difference between covering a door and disabling one.