I am a new homeowner and thus new avid DIY enthusiast :)
We recently had a new radiator installed and relocated, and had to remove all the existing materials. This is what I discovered (see image)
Its a beam and block concrete floor. In some areas there are rather large gaps. There is also some sand (?) that I am assuming has been used to level the floor.
On top of this was Expanded polystyrene (50mm) then Chipboard (22mm).
My aims with the new floor
- reduce sound going down to the flat below
- reduce sound coming up from the flat below
- Very solid feeling underfoot
- What should I used to fill those gaps?
- Whats a good sound insulation material to use instead of the Expanded polystyrene, which I understand due to the light mass has poor sound reduction
Is the following idea good, or bad?
- perimeter strips around the room
- lay a rubber mat over the floor (wont bother leveling, but will fill the gaps)
- thermal insulation (as shallow and as dense as possible, suggestions needed)
- screed up to floor height, possibly a little more if needs must
I am hoping I wouldnt then need to bother with chipboard, which is just prone to movement and making noise.....
OR, should I level out the floor first? Is there a good sound reducing leveling compound out there?
Many thanks, looking forward to hearing your ideas. We live in the UK (for material suggestions)