How to Hang Curtains With a Roller Shutter Box
To hang curtains with a roller shutter box without drilling the housing, there are four solutions: adhesive supports on the front of the box (1 to 3 kg), lateral pressure supports inside the box (5 to 6 kg), a tension rod resting against the window reveal, or a rail fixed to the ceiling above the box. For a heavy curtain, the ceiling rail or wall mounting above the box stays the safest.
The box limits the load: supports fitted onto the housing suit sheers, rarely heavy curtains. Kurtens custom curtains weigh 620 gsm and are then mounted on the ceiling or on the wall above the box, for a drape that fully hides the housing.
Why a roller shutter box makes hanging harder
The roller shutter box sits right above the window, exactly where a rod would normally fix. Drilling the housing is strongly discouraged: a screw can reach the mechanism, the slats or the shutter curtain and jam its operation. The mount must therefore work around the box, either resting on it without drilling, or fixing the rod above it, on the ceiling or the wall.
The choice depends on two factors: the weight of the curtain and the type of box (interior surface-mounted, recessed or built-on). The heavier the curtain, the further you must move away from solutions fitted onto the housing.
4 ways to hang curtains with a roller shutter box
Four methods let you dress a window with a box, from the lightest to the strongest.
- Adhesive supports on the box. Two supports stick to the front face of the housing and hold the ends of the rod. Capacity 1 to 3 kg, for sheers and light curtains only. Fitted in 5 minutes, no tools.
- Lateral pressure supports. Two pieces clamp against the inner walls of the box, with no drilling. Capacity 5 to 6 kg, the strongest solution fitted onto the housing. For interior surface-mounted boxes only.
- Tension rod on the reveal. An extendable bar holds by pressure between the two sides of the window reveal, below the box. Capacity 3 to 8 kg depending on the model, with no drilling, ideal for small to medium windows.
- Ceiling rail or rod. Fixed to the ceiling above the box (drilling the ceiling, not the housing), a rail holds 15 to 20 kg and fully hides the box. It is the only solution truly suited to heavy curtains and large windows.
Which solution by curtain weight?
Solutions fitted onto the box top out at 6 kg, which suits sheers but not heavy technical curtains. For a dense curtain, only a ceiling rail or wall mounting above the box gives a safety margin. This table sums up each option.
| Solution | Drilling | Load | Heavy curtain (620 gsm) | Box compatibility |
|---|---|---|---|---|
| Adhesive supports on box | No | 1 to 3 kg | No | Smooth front face |
| Lateral pressure supports | No | 5 to 6 kg | Depends on model | Interior surface-mounted box |
| Tension rod (reveal) | No | 3 to 8 kg | Small windows | Reveal with parallel sides |
| Ceiling rail or rod | Ceiling (not the box) | 15 to 20 kg | Yes | Universal, hides the box |
For the detail of mounts and compatible curtain headings, see the Kurtens heading guide. And if you first want to fix with no drilling at all, see our guide on how to hang curtains without drilling.
Hanging a heavy or blackout curtain on the ceiling
For a heavy curtain with a roller shutter box, the ceiling rail is the best option. Fixed above the housing, it holds 15 to 20 kg, lets the curtain fall from ceiling to floor and fully hides the box, which makes the window look taller. Kurtens custom curtains weigh 620 gsm*, for 100% blackout*, up to 7 °C of thermal gain* and 22 dB of attenuation*: this density needs a solid fixing, so the ceiling or the wall rather than the housing.
Fit the rail 10 to 15 cm above the box, and plan a curtain tall enough to cover the housing whether open or closed. The height is measured from the rail to the floor, box included. To work out the exact size, follow the Kurtens measuring guide.
*Data from tests under optimal conditions.
Compatibility by box type
Not every solution fits every box. The type of housing decides the available options.
- Interior surface-mounted box: compatible with lateral pressure supports, adhesive supports and the ceiling rail. This is the most favourable case.
- Recessed box in the wall: fittings onto the housing are impossible. Choose the ceiling rail or wall mounting above it.
- Built-on shutter (external box): the box is not visible from inside. The mount is done normally on the wall or ceiling, like a window without a box.
Hook-system compatibility also varies by shutter brand (Somfy, Bubendorff, ACGM). Check for a groove on the box before buying a clip-on kit.
Avoid the problem: ready-to-hang custom curtains
A curtain at the right height, mounted on the ceiling, turns the box constraint into an asset: the window looks larger and the housing disappears. You just need the right size, measured from the rail to the floor.
Kurtens makes every curtain custom to the exact centimetre. You give the exact height from the rail, the curtain arrives ready to hang, long enough to hide the box and hang straight thanks to the 620 gsm fabric. Discover the Kurtens custom curtains, delivered to the exact centimetre.
Frequently asked questions
Can you drill a roller shutter box?
It is not advised. A screw into the housing can reach the mechanism, the slats or the shutter curtain and jam its operation. It is better to use a no-drill fitting on the box, or a rail fixed to the ceiling above the housing.
How do you fix a rod without drilling the roller shutter box?
Three options without drilling the housing: lateral pressure supports that clamp inside the box (5 to 6 kg), adhesive supports stuck to the front face (1 to 3 kg), or a tension rod resting on the window reveal (3 to 8 kg).
Which solution for a heavy blackout curtain with a roller shutter box?
For a heavy blackout or thermal curtain, a rail fixed to the ceiling above the box is the only reliable solution: it holds 15 to 20 kg and hides the housing. Fittings onto the box top out at 6 kg and suit sheers only.
How do you hide a roller shutter box with curtains?
Fit a rail or rod to the ceiling, 10 to 15 cm above the box, and choose a curtain that falls from ceiling to floor. The housing disappears behind the fabric and the window looks taller. A heavy, dense curtain hides it better than a sheer.
Do adhesive box supports last over time?
On a light sheer, yes. On a heavier curtain, adhesion drops with heat and time, and the real capacity stays 1 to 3 kg. For a durable fitting, prefer pressure supports or the ceiling rail.
A roller shutter box does not stop you dressing a window: it simply guides the choice of fixing. For a clean result that hides the housing, choose a custom curtain mounted on the ceiling, delivered to the exact centimetre.
More curtain tips
Explore our latest articles
