Suspended Floor insulation and installing a solid walnut floor on top

[spacey3]

We are currently undertaking to replace the lead pipe in our house, it has been approved so they are coming to mole next week and then approve the replacement the week after....

However, I wanted to get some opinion/advice from people. I have seen lots of information on suspended floor insulation. I am planning, once the pipe is replaced to install insulation and keep the room warmer.

I am not 100% sure on which insulation route and method to go as yet, but noticed a couple of people have used a DPM on the top layer after insulating with the wool or glass products.

Regardless if you used the DPM or any other products on the top of the joists, I was wondering rather than installing the floorboards back down would it be ok to install a solid walnut floor on top?

Would I need to do anything else to install it directly without having the floor boards? The reason why I would prefer this method is the floor is 1 inch thick which is very thick and if you add the boards then you are rising very high above the level of the floor. I wanted to try and avoid this.

 

[dontbelieveawordofit]

seen plenty of cases where the dpm idea causes horrendous mould mildew and damp issues.
insulating suspended floors in my opinion is a total waste of time and money, but if i had to do it i’d use celotex kingspan or similar foil covered board.
personally , id get the boards up , ply it all with 12mm marine ply and foam up all the gaps to stop draughts.
then lay your walnut on top.
just my opinion.

 

[Alison556]

I got under my floors insultated (there's a 12 feet space under the floor so it was helluva draughty). They used like rockwool and mesh over it to secure it in place. It was all done from under the floor, so no floorboard disruption and then I had solid oak laid on top.

 

[JohnD]

I got under my floors insultated (there's a 12 feet space under the floor so it was helluva draughty). They used like rockwool and mesh over it to secure it in place. It was all done from under the floor, so no floorboard disruption and then I had solid oak laid on top.

A good method.

Because the rockwool can be stuffed tightly between the joists with no need for precision cutting, it easily blocks draughts which are the main cause of cold through a wooden floor (obviously there is no loss through convection, and no discernible radiation or loss by conduction).