ᐅ Construction of the drywall partition for the washbasin in panel form

Created on: 12 Jan 2025 09:38
L
LostWolf
Good morning 🙂

I am currently planning the drywall partition for my bathroom.
On this, a washbasin countertop about 2.5m (8 feet) wide will be installed, which will hold a countertop washbasin:

3D bathroom with round stone washbasin on wooden console and pendant lights.


What is the best way to build this drywall partition so that I can securely attach the supports holding the "countertop"?
Are standard 100mm (4 inch) CW studs sufficient if I cover them with a 22mm (7/8 inch) OSB3 board, followed by one layer of drywall? (Washbasin weight approx. 50–70kg (110–154 lbs))
Prefabricated washbasin support elements, like those from Geberit, are less useful here because I can’t make use of their mounted threaded rods.

Unfortunately, a DN40 (1.5 inch) drain pipe from the washbasin to the right exterior wall also needs to be routed through the vertical studs.

Bathroom with wall-mounted wooden shelf, stone washbasin, stacked towels, and baskets.


Technical floor plan of a room with dimensions, bathtub, sink, and furniture.
L
LostWolf
12 Jan 2025 10:41
Could I achieve 15% (±3%) residual moisture?
W
wiltshire
12 Jan 2025 10:51
LostWolf schrieb:

I could get about 15% (+-3%) residual moisture.

From my point of view, 15% is acceptable; 18% would be quite high.