Hello, we are in the process of tearing out the hideous wood paneling on the walls before we replace the windows in our basement lodge, and as it appears (and as we suspected earlier) our 70s house is built with blåbetong in the basement part. I was mostly surprised that the interior walls (which are exterior walls) had zero insulation behind them. No wonder the walls are cold in wintertime and that the basement part, even the side that is not underground, is colder than the upper floor.
The question is how we should proceed with this? We have measured radon and have an average value of 392 in the whole house with "natural draft," so we will install mechanical exhaust ventilation with fresh air vents in the future, hoping to actually get air changes that will significantly reduce the values. But should something be done with the walls before we build the new inner wall? I would like to insulate a bit but have heard that it's not good. We have blåbetong on the innermost, an air gap, and brick on the outermost.
The question is how we should proceed with this? We have measured radon and have an average value of 392 in the whole house with "natural draft," so we will install mechanical exhaust ventilation with fresh air vents in the future, hoping to actually get air changes that will significantly reduce the values. But should something be done with the walls before we build the new inner wall? I would like to insulate a bit but have heard that it's not good. We have blåbetong on the innermost, an air gap, and brick on the outermost.
