Interior insulation wall / timber framing

Hello everyone,

I have an externally insulated wall (Bild außen.jpg), which feels quite cold in winter. Since drywall will still be installed on it, there is nothing against additional insulation from the inside.

My questions: how should this timber frame wall area (see Bild innen.jpg) be insulated? Should the vapor barrier be stuck on directly and then glass wool and drywall? My gut feeling tells me that the beam does not feel comfortable with the foil glued directly on it. What happens if condensation occurs then? I would first place glass wool against the wall, then the vapor barrier, and then drywall again. Is that okay, or would I be risking building damage that way? What would you do?

Best regards and have a nice evening, Axel

Hello, I can only strongly advise you against insulating your wall from the inside. If your wall is cold, then you must improve your insulation from the outside, never from the inside! You bring the dew point into the construction and thus also the building damage (MOLD). How is the wall insulated? It all still looks quite new...... Regards

Hello,
thank you for the reply. The insulation is from 2005: Styrofoam, 10 cm, wlg 035. What do you think about the vapor barrier? Should I just screw battens onto it and stick the foil on that?

Regards,
Axeö

Hello, I am now interested in the entire wall structure. Is the entire house built with timber framing and infilled with [Porenbeton(?)]? If yes, why? Was it only renovated in 2005 or newly built? Is only the area at the gable connection cold? Or all external walls? Regards

Hi,

I have extended an old solid settlement house with an annex (timber frame). Most openings are fitted with glass. It only concerns the area marked in the picture. This area is built up with sand-lime bricks and insulated from the outside.

As can be seen in the interior picture, the vapor barrier is still missing in the roof slope. I am not entirely sure how I should install it in the marked area. Directly or with some air space using counter battens?
The tip to avoid internal insulation is already good.

Regards,
Axel

Hello,
So your wall structure is as follows: timber framing (as in the picture), filled with calcium silicate bricks and then 10cm ETICS from the outside?
Is your entire extension built with this construction?

I somehow cannot imagine that. With that, you would not meet any requirements of the Energy Saving Ordinance.

Somebody must have planned the wall structure at some point. How did that person think about the building physics? I mean thermal insulation, etc.?

Regards