Underfloor heating advice

clutterbug_2

Hi, I'm after some advice on installing underfloor heating.

We've just had our concrete floor laid with 100mm jablite underneath (don't know I'd that will help in the advice), and we need to get the underfloor heating sorted.

Because we have big (old fashioned) radiators on the system we didn't want to be putting more pressure on the combi boiler so opted for electric UFH but now my husband has decided on which tiles are going down I'm worried it's going to prove ineffective. He's chosen 20mm limestone tiles.

We've calculated for the tile backers but what do you think, do you think it's going to actually work?

It's the cable style kit we've been looking at with the 6mm board and it's 150w.

The area is roughly 1.5m x 4m (the room is bigger but I've taken off where units are).

Thanks!

clutterbug_2

No-one? Everyone on here is so knowledgable

tpt

hello! what is the room and is it to be your primary heating source in that room?

how big is the room and does it have any large windows\patio doors etc?

clutterbug_2

Hello!

It's the kitchen and has fantastic insulation all the way round but has very high vaulted ceilings. Its 4.6m x 2.1m but there are cupboards along one long wall, so obviously there won't be any cabling under there.

There will only be a double glazed back door at the end of the room measuring 800 x 2100mm and then two hi-therm keylite roof windows in the pitched vaulted ceiling which are both 580 x 780mm.

Hope that's enough info.

clutterbug_2

Oh, and it will be the primary heat source

premkit

The thicker the insulated backer board will give you better heat. The jab lite under the concrete will make little difference.

Devi or warmup are good products, and I would possible go for a 175 kw or bigger, you can all ways turn it down.

Has to be rcd protected on its own dedicated supply.

clutterbug_2

Hi, thanks. The electrician will be installing the thermostat and power supply, so it'll be done right - we're having the fuse box replaced with rcd at the same time.

tpt

i'd second what premkit says. Its not ideal as a primary heatsource but in a well insulated room it can work well. go for the higher wattage (even 200w).

Devi, warmup and we also get good feedback on ecofloor by flexel

Yorksboy

Hi

In the past I have used electric underfloor to heat a very cold kitchen floor. It works really well - make sure you have one of the learning type thermostat/timers installed- just google AUBE UFH. be prepared to leave the floor switched on and let the thermostat do its job.

When I moved house I installed a similar system in a bathroom under a tiled floor and am very pleased with that. I installed a "wet" system in my conservatory, again very happy with it, but I was able to construct the whole floor as I wanted with around 60mm of insulation on top of the slab then the piping and screed. I had to specify that the slab was to be 1200mm below finished height so as to fit every thing in.

Good luck

clutterbug_2

Thanks everyone