Replace screed with insulation?

[GilesP]

Some advice please.

Our 1960s bungalow has a raft foundation with approximately 40mm of screed (no insulation). Is it possible to replace the screed with insulation, and is it likely we would "feel" the benefit? I appreciate it is likely expensive and would not make sense financially.

Additionally, is it likely the screed will have corroded the copper CH pipes which through it?

All thoughts appreciated.

 

[Wayners]

Half my 5.6m kitchen is new with floor insulation and the other half is original 1964 bungalow.

I can't tell the difference. Floor feels the same temperature. I can't see how it does anything tbh.
Yeah if we had a heated floor but we don't.

Re copper pipes.
More likely copper rubbing a hole causing leak as it expands and contracts. That's happening with coppsr pipes in ground coming to some houses on our estate.
Doubt your copper is getting damp

 

[GilesP]

Thanks @Wayners, you might have just saved me a lot of mess.