Partition walls — T-junction

Function of the junction

T-junction = meeting of two partition walls at 90°. Typical for:

• Separating a niche / walk-in closet from a larger room.
• Separating a bathroom within a bedroom — master en suite layout.
• Open-space with light partitioning (kitchen + dining + living area).

Structurally: CW profiles of one wall are joined with CW profiles of the other wall using self-drilling screws at the 90° corner.

Critical installation aspects

• CW profiles — at the corner two vertical CW studs meet perpendicularly; connected with 6×16 mm self-drilling screws, at least 3 screws per joint (top-middle-bottom).
• termPIR® AL thermal insulation (item 02) — continued in both directions from the corner; at the corner itself a small wedge cut to size (without it, a void = acoustic bridge).
• Plasterboard finish (item 03) — external corner protected with a pre-skimmed aluminium profile (Knauf Hornleiste / Rigips Cornerflex); protects against furniture impacts.
• Internal corner (on the smaller room side) — standard joint filler + paper plasterboard corner tape.
• Acoustic performance at the corner — watch out for acoustic bridges through the metal CW; consider extending the acoustic sealing tape at the corner (as with a load-bearing wall).

Documentation

Technical Catalogue termPIR® — Residential Buildings (Gór-Stal 2022), page 58 — Partition walls, T-junction detail. Scale 1:10.

Components in this junction