Where to position curtain pole brackets
Fix the pole 12 to 15cm above the frame and 15 to 20cm past it on each side, set the end brackets a couple of centimetres in from the finials, and add a centre bracket once the run passes about 1.5m. Below: the working rule, and how many brackets each length needs.
Brackets are the least glamorous part of a curtain scheme and the part that decides whether it still looks right in five years. A pole bows for one of three reasons: too few brackets, too thin a pole, or a fixing that never had solid ground. Get the spacing right and the first of those disappears.
Height, width and ends: where the pole sits
Spacing decides how many supports a run needs; position decides where the whole assembly sits. Three measurements do the work. Height: mark the pole 12 to 15cm above the window frame where the ceiling allows, which lifts the heading clear of the glass so no daylight is lost at the top. Width: carry the pole 15 to 20cm past the frame on each side, so the curtains stack back onto the wall rather than across the window. Ends: set the end brackets a couple of centimetres in from the finials, so the rings are not lost beyond them.
Fix the height and the width first, then space the brackets across the run you have arrived at. Doing it the other way round tends to leave an awkward last gap. Our measuring guide walks through both measurements, and the stack-back guide covers how much wall a heavy or interlined curtain really needs.
The working rule on spacing
As a practical starting point, supports should sit no more than about 50cm apart on a loaded track, and closer where the curtains are heavy. End brackets sit a short distance in from each end: a couple of centimetres, so the rings or gliders are not lost beyond them. The heavier the curtain and the wider the window, the tighter the spacing.
How many brackets for a curtain pole?
Counting from the rules above, a straightforward pole with a curtain of ordinary weight works out at:
- Up to 1.5m: two brackets, one at each end.
- 1.5m to 2.4m: three, the two ends plus a centre.
- 2.4m to 3m: four, the ends plus two intermediates.
- 3m and over: five or more, keeping the unsupported sections even.
Treat those as the minimum rather than the answer. Weight moves every one of them up a step: a heavy or interlined curtain on a 2.4m pole is happier on four brackets than three. On a track, work to the spacing instead and keep supports no more than about 50cm apart, since the gliders pass the brackets and nothing is lost by adding one.
When a run needs a centre bracket
Two end brackets are fine for a short, light pole. But once a pole spans beyond roughly 1.5m, or carries a heavy curtain, the middle has nothing holding it up and will gradually bow. A centre bracket solves it; wider or heavier runs need several intermediate brackets, evenly spaced.
On a pole, curtain rings pass on either side of a centre bracket but cannot cross it, so a centre-bracketed pole naturally suits a pair that meets in the middle. On a track, gliders run past the supports along the whole length, so intermediate brackets do not interrupt the draw. It is one of the quiet advantages of a track on a long run.
Support, diameter and weight are one decision
Spacing does not work in isolation. A heavier curtain wants both a thicker pole and closer brackets; you cannot fix a sag caused by an under-sized pole simply by adding supports, nor rescue a wide span on a thin pole however many brackets you use. Set the diameter and the spacing together. Our diameter and weight guide covers the load side of the same question.
And every bracket needs solid ground
The best spacing in the world fails if the fixing pulls out. Each bracket must bite into masonry, timber, or a noggin or batten: not bare plasterboard. Where the solid fixing does not line up with the spacing you need, add a batten behind the surface. Our wall vs ceiling fix guide covers what to look for behind wall and ceiling alike.
Common questions
How many brackets does a curtain pole need?
Two for a pole up to 1.5m, three from 1.5m to 2.4m, four from 2.4m to 3m, and five or more from 3m up, keeping the unsupported sections even and putting a bracket on every join. Those are minimums for a curtain of ordinary weight: a heavy or interlined pair moves each one up a step, so a 2.4m pole under interlined curtains is happier on four. Complete packs include the brackets the maker specifies; extra brackets are sold separately.
How far apart should curtain pole brackets be?
As a working maximum, no more than about 50cm between supports for a loaded track, and closer for heavy curtains. A pole longer than roughly 1.5m generally needs a centre bracket in addition to the two ends; very wide or heavy runs need more again.
When do I need a centre bracket?
Once a pole spans beyond roughly 1.5m, or carries a heavy curtain, the two end brackets are not enough: a centre bracket stops the pole bowing under load. The wider and heavier the curtain, the more intermediate supports it needs.
Will a centre bracket stop the curtain drawing across?
On a pole, rings pass either side of a centre bracket but cannot cross it, so a centre-bracketed pole usually suits a pair meeting in the middle. On a track, gliders pass freely along the whole run.
How do I stop a pole sagging?
Match the diameter to the weight and span, add intermediate brackets so no unsupported section is too long, and fix every bracket into solid ground. Bowing is almost always too few brackets, too thin a pole, or a fixing that has pulled.