What the System Actually Is
A flush cavity slider is a wall with a void inside it: the pocket framing creates the cavity the door slides into, the track carries and guides the door, and the linings close the wall on both faces with the door finishing flush when shut. The system is a partition and a door engineered as one — the pocket affects the wall’s structure, the track affects its depth, and the flush finish affects its detailing. Each element depends on the others.
The flush cavity system is chosen where a sliding door is wanted without the door projecting into the room — a clean wall plane with a hidden opening.
The Pocket Framing and Structural Implications
The pocket is the wall’s structural heart: the framing around the cavity must carry the wall’s loads and the door’s weight, hold the track firmly and keep the cavity true. The pocket’s width and depth set the wall’s thickness, and the framing is engineered for the door it carries — a heavy door needs a heavier pocket. The pocket is not a hole in a standard wall; it is a purpose-built frame within it.
The framing details are specified with the system, because the pocket’s straightness and strength decide whether the door runs true.
The Track, Hardware and Door Coordination
The track, hardware and door are coordinated with the pocket: the track is fixed and aligned within the cavity, the hardware matches the door’s weight and use, and the door is sized to the opening and the flush detail. The coordination is decided before the linings close, because the hardware is inside the wall. A system whose door hardware is chosen after the pocket is built is a system rebuilt on site.
The hardware selection — door weight, operation, locking and access — is part of the design, not a fixture decision left to the end. The hardware is also matched to the use: a door that will be opened constantly, hold open or carry a lock changes the track and hinge specification. The use is recorded with the selection.
Linings, Finish and the Flush Detail
The flush detail is where the system shows its quality: the linings close the wall on both faces, the door edge aligns with the surrounding surface, and the reveals, handles and jamb details are finished to match. The flush result depends on the framing being true, the linings being level and the hardware holding the door in plane. The finish details are specified with the system, because a flush slider that is not flush is just a slider.
The finish expectations are agreed before installation — the reveal size, the handle detail and the door’s plane — so acceptance is based on the designed result.
Services, Penetrations and the Pocket
The pocket constrains what else the wall can carry: services and penetrations are coordinated around the cavity, switches and outlets are located clear of the door’s travel, and the wall’s acoustic and fire behaviour is detailed with the opening. A cavity slider is a penetration in the wall, and its performance is treated as part of the assembly. The coordination is written into the design, because the pocket is the wall’s most constrained zone.
The same coordination logic runs through the internal wall and partition systems guide: doors, services and junctions are designed with the wall, not added to it.
The Flush Cavity Slider Checklist
- Is the pocket framing engineered for the wall and the door it carries?
- Are the track and hardware selected and coordinated before the linings close?
- Is the wall thickness and cavity depth set by the pocket design?
- Are the flush details — reveals, handle, door plane — specified and agreed?
- Are services and penetrations coordinated around the pocket?
- Is the acoustic and fire behaviour of the opening detailed?
Frequently Asked Questions
Can any wall become a cavity slider?
No — the pocket needs depth, a suitable structural context and coordinated services. The wall is designed for the slider from the start, not retrofitted into a standard partition.
Why does my slider not finish flush?
Because the framing, linings or hardware are not true to the flush detail — the pocket must be straight, the linings level and the hardware holding the door in plane. The flush result is engineered, not adjusted at the end.
Does a cavity slider affect sound between rooms?
The opening is a penetration in the wall, so the acoustic behaviour is detailed with the system — seals, track treatment and the assembly around the pocket. The performance is treated as part of the wall, not ignored because the door is hidden.
To design a flush cavity slider that works as a wall, engineer the pocket and details first and contact CeilingPro with your photos for an inspection assessment and quote. The slider is a system, not a door in a wall.
