Browse Forums Heating, Cooling & Insulation 1 May 28, 2017 10:55 am Hello, I'm new to the fourm so please excuse me if I have asked a question that has been previously asked. I want to insulate my underfloor of first floor of my house. I have semi finished basement ( half concrete floor half dirt). My question is this, Can I make a row of regular insulation and then layer a second on top of it before strapping it to the floor joist? Re: Can I... 3May 30, 2017 1:36 pm well I'm trying to get the floor as temp. stable as possible. From what I understand, The higher the R value the better. I was going to use two layers of R-30 between the floor joist before attaching them with the strapping 0 4679 I am saying that double brick has similar thermal performance due to thermal mass effect. It will be still very interesting to see the state of your framing after 10-15… 10 23114 |