Comprehensive Manual: Installing Light Steel Keel Partition Walls

The Light Steel Keel (LSK) system consists of two primary components: the Track (U-shape), fixed to the floor and ceiling, and the Stud (C-shape), providing vertical structural support for gypsum or cement boards. Precision in assembly is the key to a crack-free, acoustically sound partition.

1. Technical Specification & Spacing Guide

Adhering to standard spacing ensures the wall can withstand lateral loads and prevents the finished boards from bowing:

[Image: Technical diagram showing the connection between a C-stud and U-track with a 5mm expansion gap at the top]

2. The Professional Installation Workflow

Phase I: Layout and Damp-Proofing

Accuracy at this stage prevents "leaning" walls. Use a 360° rotary laser to project the wall line onto the floor and ceiling simultaneously. To prevent moisture migration, always apply a bitumen strip or foam tape under the floor track before fastening it to the slab.

Phase II: Structural Framing & Expansion Gaps

• The 5mm Rule: Always cut vertical studs 5mm to 10mm shorter than the floor-to-ceiling height. This allows for building movement without buckling the steel frame or cracking the gypsum joints.

• Orientation: All studs must face the same direction (open side of C-profile pointing toward the start of the wall) to provide a consistent surface for board installation.

• Reinforcement: At door openings, use "back-to-back" double studs and insert timber blocks if heavy items (TVs or cabinets) are to be mounted on the wall.

Phase III: Services and Acoustic Infill

Before closing the second side of the wall:

1. Service Holes: Pass conduits through the pre-punched holes in the studs. Use plastic grommets to protect wires from sharp steel edges.

2. Mineral Wool Infill: Fill the entire cavity with high-density mineral wool. Ensure zero gaps, as even a small void can significantly reduce the Sound Transmission Class (STC) rating.

3. Quality Control Standards for 2026

A professional LSK partition is judged by:

• Verticality: Deviation should not exceed 3mm over a 2.5-meter height.

• Acoustic Integrity: Use of sealant at all perimeter junctions (floor, ceiling, and side walls).

• Fastener Flushness: Drywall screws must be driven slightly below the board surface without breaking the paper liner.

Partner with Experts for Your Next Infrastructure Project

Implementing a high-performance LSK system requires both quality materials and technical precision. Our engineering team provides Detailed Shop Drawings and Material Take-offs (BOQ) to ensure your project stays on schedule and meets international fire and acoustic codes.