Hello, I have a utility entrance that needs better insulation. The utility entrance is an extension of the house, with exterior walls made of brick/mortar. On the inside, they had placed insulation between thin studs, which were then covered with plastic and then plasterboard. So, the insulation was in direct contact with the plastered exterior wall, and the plastic was open both at the top and bottom. When I started pulling at it to see the condition underneath, I noticed it smelled musty. I have now torn everything out and am left with just the plastered walls. I have been researching a lot on the best way to insulate without taking up too much space since I don't have much room to build on; one wall is only 5 cm from the door frame. I found "byggskiva Packwall Recoma" on Byggmax's website, which sounds really good, but is it something that could be placed directly on the plastered wall without anything else? Or do you still need to try to create an air gap for the exterior wall to breathe?
Grateful for an answer
Grateful for an answer