Historic wall AL GK — frame mounting (horizontal section)

Junction function

Horizontal corner detail of AL GK insulation on a frame — analogous to the adhesive-bonded variant (p. 53), but the frame projects perpendicular to the insulated wall and creates a specific geometry at the corner.

Typically at the corner we use the last vertical CD60 rail fixed to the transverse wall (item 06) with short anchors + ES brackets; the last AL GK board terminates on this rail.

Critical installation aspects

• Frame at the corner — the last vertical profile fixed to the transverse wall; alternatively: the frame ends 2 cm before the corner, with the last board supported on a bonded timber batten.
• Compensation joint (item 07) — 5–15 mm around the entire perimeter of the board; filled with low-expansion PIR foam; in the corner it is important that the joint is continuous (no breaks).
• Cover strip (item 08) at the corner — typically decorative timber or acrylic stucco; necessary to mask the differing thermal movement of the two elements (termPIR vs older wall).
• Thermal bridge at the corner — in the frame variant the bridge also concerns the section between the insulated wall and the transverse one (typically 20–30 cm); consider continuing the insulation onto the transverse wall along a 30 cm band.
• Corner joint finishing — metal corner bead + standard gypsum board jointing compound.

Documentation

Technical Catalogue termPIR® — Residential Buildings (Gór-Stal 2022), page 53 — Historic wall AL GK, horizontal section, frame mounting. Scale 1:10.

Components in this junction