I want to insulate the attic with rockwool slabs in an unusual way. My house is old and we may have to rebuilt a new house in next 5 years, so I do not want to spend a lot of money on this.
Attic / ceiling of my house is made of concrete and the floor of attic is covered with nothing. I want to cover it with rockwool. I've heard that if you leave the rockwool slabs uncovered with planks or etc. you will end up with a lot of fleas in the summer. I am not sure how much of it is true!? So, I do not want to cover them with planks because of the cost of it. I also want to reuse the materials in the future for the new house. The area to be covered is 59 M2. We do not use the attic almost at all.
I thought about the styrofoam insulation but it costs more and once you do cement finish to cover it you cannot use it anymore.
Are there other alternatives used to cover the rockwool on the floor? Or, maybe there are other insulation materials that I can use instead of rockwool!?
Note: The attic's temperature differs from the temperature outside just 1 C degree or so.
Additional question: How much is it going to be effective to just have the attic insulated for the house?
Thank you for taking the time to answer