ᐅ Timber frame construction

Hello, I have a question about timber frame exterior walls.

The plan is to insulate between the studs with mineral wool. The interior sheathing will be stiffening OSB. On the outside, direct cladding on the wooden studs was planned using Bluclad. Now, an external ETICS (External Thermal Insulation Composite System) is possibly being considered.

However, I can’t find any ETICS systems designed for timber frame walls with mineral wool insulation. I only find systems using insulation materials made from wood fibers, hemp, or similar.

I would like to stick with mineral wool.

I would appreciate any advice.

ETICS for timber frame exterior walls are not available with mineral fiber insulation; the products I know of are only approved for "concrete and masonry with or without render".

I believe this is due to the requirement for mechanical, dowelled fixing for ETICS using mineral fibers, which is not feasible on a timber frame exterior wall.

As an alternative, it might be possible to increase the width of the studs (for thicker insulation between the studs) and install a ventilated, renderable exterior sheathing board on the outside.

That’s correct, a WVDS (windtight vapor diffusion seal) is not feasible for timber frame walls. Therefore, we used insulation boards, which have proven to be very effective. We then had these insulation boards covered with plaster. The energy-saving effect is excellent.

I am planning to implement this soon as well. Thank you very much for the tip. Initially, I was also considering mineral wool as insulation. But it seems I can skip that.

This is possible with mineral wool, where the construction detail is important. There is mineral wool from Rockwool, which is the material used for external insulation. It provides thermal and acoustic insulation.

Marcel schrieb:
This can already be done with mineral wool; the construction details are important here. There is mineral wool from Rockwool, and that is the material for external insulation. It provides thermal and sound insulation.

Great tip, and I will implement it that way. It is planned for spring, and I will also use this mineral wool from Rockwool.