A shaft wall system encloses elevator shafts, stairwells and service chases while being built entirely from the floor side. CH studs and J-track hold the shaftliner panels, so no one works inside the shaft and no scaffolding goes in.
The sequence below is the same at every floor. The liner panels and studs go in panel by panel from the room side.
Both parts come in three matching widths. The listed assembly and the wall height set the width and gauge.
| Part | Widths | Gauge | Lengths |
|---|---|---|---|
| CH stud | 2-1/2", 4", 6" | 25 or 20 ga (6": 20 ga) | 8' to 14', made to length |
| J-track | 2-1/2", 4", 6" | 25 or 20 ga (6": 20 ga) | 10'; long leg 2-1/4" or 3" |
For a full walkthrough, read shaftwall CH stud systems in Ontario.
A shaft wall fire or sound rating covers the studs, liner panel, face board, fasteners and details together, as tested and listed. Tell us the listed design your project names and we will quote the parts it specifies.
Where the face board stops at a frame or another surface, J trim caps the edge without joint compound. Standard steel track frames the regular walls beside the shaft.
Three questions that come up on every shaft wall job.
A shaft wall stud with a C section and a 1" tongue and cap. The 1" slot on each side holds a shaftliner panel, and the face board screws to the C flange.
The long leg faces the shaft and backs up the liner panel; the 1" short leg faces the room, behind the face boards.
The rating belongs to a tested, listed assembly. Use the assembly named in the project documents.