Curtain motors

Motorised curtains guide: what to plan before the ceiling is closed

A motorised curtain system combines a motor, a track or roller tube, a receiver, a power supply and a control interface. Choose the motor by treatment type, curtain weight, track length and control method. Power points, control cabling, pocket dimensions and blocking must be fixed before the ceiling is closed, because changes afterwards are costly and slow.

Key takeaways

Curtains use track motors, while roller and zebra blinds use tubular motors inside the roller tube.
Motors should be sized against the manufacturer's rated load and maximum track length, using the real weight of fabric, lining and hardware.
The power point for a curtain motor belongs inside the ceiling pocket at the motor end and must be fixed before the ceiling is closed.
The control protocol, such as RF, Wi-Fi, Zigbee, dry contact or KNX, must be decided before motors are ordered.
Track motors with touch-motion and manual pull allow curtains to be operated during a power cut.

What makes up a motorised curtain system?

A system has five parts: motor, track or tube, receiver (usually built into the motor), power supply and control interface. Each part involves a different trade on site, so motorisation needs early coordination.

Motor: drives the curtain along a track or turns a roller tube.
Track or tube: motor-compatible tracks carry an internal belt or cord; see tracks, poles and ceiling pockets.
Power: mains 220–240V, low voltage through a power supply, or rechargeable battery.
Controls: remote, wall switch, phone app, smart-home system or hotel room control.
Configuration: travel limits, groups, scenes and smart-home connection, set during installation.

Which motor type suits each treatment?

Curtains use track motors; roller, zebra and many roman blinds use tubular motors inside the tube or headrail. The heading type also affects track and motor choice.

Treatment	Typical motor	Motor location	Selection note
Pinch pleat and wave curtains	Track motor	One end of the track, inside the pocket	Pocket must fit the motor head; wave needs compatible track and carriers, see curtain heading types
Roller and zebra blinds	Tubular motor	Inside the roller tube	Tube diameter follows blind size and weight
Roman blinds	Tubular motor in headrail or dedicated system	Inside the headrail	Check lift cords and load for the size
Venetian and vertical blinds	System-specific motor	Inside the headrail	Confirm tilt and traverse functions separately

Mains, low voltage or battery?

For new build and major refurbishment, wired motors are the stable choice. Battery motors suit retrofits where cables cannot be run, such as finished apartments.

Power	Advantages	Limitations	Suits
Mains 220–240V	No charging; handles heavier curtains	Cabling before ceiling close-up; qualified electrician needed	New build, hotels, large curtains
Low voltage (via power supply)	Small cables; convenient for central control	Needs a location for the power supply; voltage drop on long runs	Centrally controlled multi-curtain systems
Rechargeable battery	No mains cabling	Periodic charging; limited load and speed	Retrofits, small to medium roller blinds

For wired motors, mains or low voltage, the power point belongs inside the pocket at the motor end of the track and must be shown on the M&E drawings.

How do remotes and smart-home systems connect?

Remotes usually use RF; smart-home links use Wi-Fi, Zigbee or dry contacts; larger buildings and hotels may use KNX or RS-485. Fix the protocol before ordering motors, because not every motor supports every protocol.

RF remote: simple and network-independent, suited to apartments and townhouses.
Wall switch: needs control cabling or a wireless switch; check whether the switch needs a neutral.
Wi-Fi or Zigbee: app control, requires a hub and reliable signal inside the pocket.
Dry contact, KNX, RS-485: for integration with building management or hotel room control systems.

Agree groups and scenes with the owner (for example, sheers open in the morning, both layers closed at night) and record them so the installer programmes them correctly first time.

How do you size a curtain motor?

Size the motor against the manufacturer's rated load and maximum track length, compared with the real weight of the curtain. Curtains heavier than assumed are a common reason for slow running, overheating or stalling mid-travel.

Calculate fabric area: flat width (after fullness) × cut drop.
Multiply by fabric weight (g/m²) from the manufacturer's data.
Add lining, interlining and hardware weight.
Compare with the motor's rated load, leaving the safety margin the manufacturer recommends.

Illustration: a curtain with an 8.35 m flat width and 2.75 m cut drop has about 22.96 m² of fabric. At 350 g/m² the face fabric weighs about 8.04 kg; a 300 g/m² blackout lining of the same area adds about 6.89 kg, giving roughly 14.9 kg before hardware. The flat-width calculation is explained in the curtain fabric quantity guide.

What must be fixed before the ceiling is closed?

Before close-up, freeze pocket dimensions, blocking, power, control cabling and motor end. Use this checklist across interior design, ceiling and M&E teams.

Item	What to confirm	Responsible
Pocket dimensions	Typically about 15–20 cm internal width for one track, 25–30 cm for two (sheer + blackout), about 10–15 cm high; check the motor head size against the catalogue	Design, ceiling contractor
Motor end	Left or right; for centre-opening pairs, confirm one motor drives both panels	Design, curtain supplier
Power point	Socket or junction box in the pocket, at the motor end	M&E
Circuit	Supply circuit and protective devices per electrical design	M&E
Control cabling	From wall switch or control panel to motor, if wired	M&E, smart-home contractor
Blocking	Along the track line, rated for curtain and motor	Ceiling contractor
Access	Ability to reach the motor for maintenance	Design, ceiling contractor
Signal coverage	Wi-Fi or Zigbee in the pocket; hub location	Smart-home contractor

On SEAMATER, curtain motors are a category of their own, with installation included, including travel-limit setup and smart-home connection. The project team should fix the motor-head dimensions and put them on drawings before the close-up milestone.

Does motor noise matter?

Yes, especially in bedrooms, hotel guestrooms and meeting rooms. Quieter motors with soft start and soft stop make night-time operation less intrusive.

Manufacturers usually publish noise in dB at a stated distance; compare figures measured under the same conditions. Track, carriers and speed also shape real-world noise, so test in a mock-up room before fixing the specification for a hotel.

What happens during a power cut or motor fault?

Many track motors offer touch-motion start and can be pulled by hand when power is off. Tubular motors generally cannot be operated manually, so plan a fallback for rooms that need light control.

Test manual operation at acceptance, using the installation and handover checklist.
Provide an access panel or open pocket so a motor can be replaced without breaking the ceiling.
Record motor models, settings and app accounts in the handover file.
Include motor and accessory supply time in the programme; see procurement lead times. Registered accounts on SEAMATER can see lead time and stock per product; verified trade accounts also see price.

Selection should rest on load, control protocol and local technical support; for overseas projects, confirm protocol and supply voltage at project stage.

Frequently asked questions

What is a motorised curtain?

A motorised curtain opens and closes with an electric motor rather than by hand. The system includes the motor, a motor-compatible track or roller tube, a receiver, a power supply and a control interface such as a remote, wall switch, phone app or smart-home system. Curtains can be grouped and linked to scenes so several windows move together.

What kind of motor do curtains need?

Pleated and wave curtains use a track motor fitted at one end of a dedicated track, driving the curtain with an internal belt. Roller and zebra blinds use a tubular motor inside the tube. When choosing a track motor, compare its rated load and maximum track length with the actual weight of the made-up curtain.

What electrical preparation do motorised curtains need?

Each motor needs a power point, usually a socket or junction box, inside the ceiling pocket at the motor end of the track. Wired wall switches also need control cabling from switch to motor. All cables must be run before the ceiling is closed and shown on the M&E drawings, with the motor end agreed in advance.

Are battery-powered curtain motors a good option?

Battery motors suit retrofits where cabling is not possible, such as finished apartments, and are typically used for small to medium roller blinds. Their limitations are periodic recharging and lower load and speed capacity. For new build and hotel projects, wired mains or low-voltage motors are generally the more dependable choice.

How do motorised curtains integrate with smart-home systems?

Integration is typically through Wi-Fi or Zigbee to a hub, dry contacts to a controller, or KNX and RS-485 in larger buildings and hotels. Each motor range supports only certain protocols, so the protocol should be confirmed with the smart-home or room-control contractor before motors are ordered.

Can motorised curtains be opened by hand during a power cut?

Many track motors allow manual pulling when power is off and offer touch-motion, where a gentle tug starts the motor. Tubular motors in roller blinds usually cannot be moved by hand. Confirm this function with the supplier at selection stage and test it during acceptance, particularly in bedrooms and guestrooms.

Share pocket drawings and the list of windows to be motorised, and SEAMATER can survey, install the motors and set travel limits before handover.

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