Advice on which underfloor heating system

[ghost]

Hi,

Looking to do around 65m2 on the ground floor of my house with underfloor heating. I will be looking to do an overlay system over existing floor boards. Not to keen on removing the existing floor boards as it is an old house and would be a big job. That said I can get access from below to insulate between the floor joists.

Two systems available where I live are Wavin Osma and the Polyplumb.

Any advice on which is the better system?

Cheers,

Scott

 

[tamz]

Old house unless totally renovated and insulated forget the hype and use radiators.

 

[Agile]

If its properly insulated underneath then it will work if you have insulated the walls as well.

But you will have the floor about 50mm higher with all the problems with doors etc.

Are you retired or working from home?

As said most people would say forget it!

Tony

 

[Registered Gas Man]

Nu-Heat

 

[DeltaT]

Perhaps your best next move is to get a heat-loss calculation done, as this would establish if there's enough floor area to heat your home. Given that your house is poorly insulated. Overlay has a limited floor M2 output, so check & double check!!

 

[njk]

Hi,

You are saving any cost or time by not removing the floor boards.
Which ever method you choose to install on top will require more work than you save, and installing insulating from underneath takes much longer time.

What floor finish are you having? If you are going to have tiles you will need a solid floor to tile on. So if you have floor boards, than getting a solid floor on top of that, is a lot of work and very expensive.

The best thing you can do is to remove the floor boards, insulate underneath, fit battens to the sides of the joists, fit 12mm plywood on top of the battens, kingspan (or similiar), install the pipework, fill with a cement dry mix, (they will add apr. 28 kgs per sqm) to the edge of the joists. On top of this you put 18mm plywood.
There are other ways to do it, but this way you get the highest output from the floor.
Then you fit your flooring on top, (if you have a carpet make sure it doesn't exceed, (including the underlay), a tog value of 1.5.

AND, as mentioned before, the room has to be insulated and draught proof.

This is not something you want to get wrong, so get someone who really knows what they are doing (and I don't mean just a good plumber), to check if the room is suitable before you start. The best way of doing that is to contact the ufh manufacturer you choose and get them to recommend someone.

If you can not fit the ufh properly, don't do it at all.


Of those two you mentioned, Osma is better but more expensive.

What area do you live in? I am sure there are more than those two who supply to your area.
Others you can have a look at are Continental, Unipipe & Nuheat.
All of them have recommended installers.

good luck.

Lolli