In our case, the construction manager and experts do not agree on how and whether to insulate the roller skirting boards.
We have brickwork without ETICS. According to the site manager, the APU strip is still to be installed on the outside, but there is no insulation behind it up to the actual window, i.e. the area of the roller blind strip.
What do you think?
According to RAL, the roller shutter guide rail does not need to be insulated. But it does no harm. Important here is also that it is diffusion-open to the outside and diffusion-close to the inside.