ᐅ Mounting of Light Fixtures with EPS Rigid Foam Insulation and Brick Slips

Created on: 30 Jan 2024 12:04
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Adam26a
A
Adam26a
30 Jan 2024 12:04
Hello everyone,

I have a prefab house from Hanse Haus, which has the following exterior wall structure, see attachment as well:
OSB board with thermal insulation
150 mm (6 inches) thermal insulation (EPS rigid foam)
11 mm (0.4 inches) brick slip cladding

Cross-section of an exterior wall: insulation, OSB boards, timber frame, interior wall with drywall.


Now I would like to attach exterior lamps, the mailbox, or similar items to it. For example, I found Fischer TherMax 8/140 M6 screws. Unfortunately, for these I would first need to drill a standard 10 mm (0.4 inch) hole and then drill an 18 mm (0.7 inch) hole through the brick slips for the cover cap (ADK).

Technical drawing of a TherMax 8/140 M6 dowel with dimensions (mm)


Do you think this is a reasonable approach or is there a better alternative?
Technical drawing of TherMax 8/140 M6 dowel: dimension details and features table.