Insulated Hollowcore floors

B-D-P--

So I just stumbled upon a company in Ireland who offer Insulation pumped hollow core flooring.

I'm here thinking its over kill, But looking for opinions.

Is there a need to insulate an internal component?

Cheers all

chillit

I think it would depend on where (as in ground floor, first floor etc) and how you plan to use the hollowcores.

Using them on the ground floor will mean insulation is an important factor to consider

Using them on the first floor means that insulation is less of an issue unless you are using underfloor heating upstairs

B-D-P--

People use Hollowcore for ground floor?

No I'll be using it on the 1st floor and yes UFH also.
So there is a usecase for it?

chillit

well the idea when using ufh upstairs is to put insulation above the hollowcore and below the ufh screed in order to limit the heat going into the hollowcore and focus the heat up into the room.

I would say that standard sheets of insulation onto of the hollowcore would be more effective than an insulation filled hollowcore because even if the hollowcore is filled there are still plenty of the slab that is not insulated. ie the concrete bits.

Speak to your engineer or ufh supplier but I think you will still need sheets of regular insulation under the ufh screed

B-D-P--

Yea, so its pretty overkill?
Like your still going to insulate under screed, I'm seeing it as a gimmick to get you to choose that product over any other unless I can be persuaded otherwise.

Johnnyhpipe

B-D-P-- wrote: »

People use Hollowcore for ground floor?

No I'll be using it on the 1st floor and yes UFH also.
So there is a usecase for it?

If your GF slab needs to be suspended then hollowcore can sometimes be used.