Balcony — ETICS wall — termPIR® ETX

Junction function

Balcony in ETICS wall — the most common detail for new-generation single-family houses built in ETICS technology.

Geometry similar to a balcony in a 3-layer wall, but cheaper — only two layers of termPIR® are used (instead of three):

1. Wall — termPIR® ETX under render (ETICS).
2. Balcony soffit — termPIR® ETX continuation of the same facing.
3. Balcony floor — termPIR® WS/BWS under the screed.

The balcony soffit and the wall share the same facing (ETX glass veil) — continuous render application is possible from the wall under the balcony. Aesthetic continuity.

Critical installation aspects

• termPIR® ETX balcony soffit (item 06) — bonded to the underside of the reinforced concrete slab + mechanically fixed at min. 4 pcs/m², in edge zones 6 pcs/m².
• PIR caps dia. 62 mm (item 05) — eliminate thermal bridges at mechanical fasteners. Without caps, “ladybugs” become visible on the facade.
• Waterproofing (item 08) — heat-welded bitumen membrane turned up onto the wall by 15 cm under the drip flashing. Critical for the balcony — any leak means staining on the facade.
• 1.5% slope from the wall to the balcony edge — achieved with a wedge-shaped sloping layer (item 16). Required by PN-B-10250.
• Drip flashing with drip edge (item 14) — edge bent 90° over 30 mm prevents water from running down the facade (aesthetics + insulation protection).
• Balustrade (item 15) — fixings installed before the surface is laid; neutral frost-resistant silicone on the fasteners.

Key comparison with the 3-layer balcony

Aspect	ETICS (this one)	3-layer
Number of termPIR® layers in section	2 (ETX + WS/BWS)	3 (AL + ETX + WS/BWS)
Price per m² of balcony	baseline	+25-35%
Wall–balcony render continuity	yes (single ETX)	no (clinker cladding)
Typical application	new energy-efficient houses	premium villa

Used in the external ETICS wall system.

Documentation

termPIR® catalogue — Residential Buildings (Gór-Stal, 2022), p. 39 — vertical section of balcony in ETICS wall.

Components in this junction