underfloor heating

victoriav

I have had some underfloor heating. (conservatory) However a close friend said he knew somebody else who has it and that their tiles are quite hot, whilst mine are luke warm. Could this be because the bloke fitting it and tiling over the top maybe used too much tile adhesive or grout? ie stopping the warmth to its full extent?

I have put it on the highest setting and it still isn't feeling much warmer and I left it like it for over a day. Could something be wrong. ? It has a heat sensor, so could that sense the sun through the windows and stop it getting even hotter? I just don't know?

missile

The idea of underfloor heating is to give a gentle heat, I would be really concerned if the tiles got hot. The covering will not affect the temperature achieved, but may take a little longer to get there. Heat sensor? I guess you mean a room thermostat? You ought to be able to adjust this to achieve whatever temperature you desire.

Bottom line - is the room warm enough? If not get the man back in

victoriav

Thanks for reply missile! yes I too wondered if it was meant to be just a background heat as well. Not least as if it got too hot and furniture was stood on the floor that it would perhaps get warped if it was wood.

The thing I believed was a 'heat sensor' was a white wire with a little knobbly bit on the end which came out the back of the control box on the wall. I don't even know where it actually is now, maybe at the top of the dwarf wall just under the sill?

I don't think I will be able to tell if its getting warm enough until its a really cold day or even winter, but even at 46oC (is that the hottest?) when fitted, it had been left at 21oC, it doesn't seem much different. By the way two heat mats were used and were cut and arranged to cover the area. with none left to fit around the patio door, or is this area meant to be just left without? the area was 5m x 4m.

Timmne

It really depends on the floor covering in our case - we have granite tiles on the bathroom floor and that gets really warm which is lovely in the mornings but would be totally unsuitable anywhere else in the house!

We have rooms with laminate flooring where you can feel the heat but not as much and other rooms with carpet and you can barely feel the warmth.

Technically (I'd have thought) it shouldn't matter how thick (within reason) the floor is as the pipes heat it like a rock in the sun-takes a while to heat up but stays warm for ages after the heating's been turned off....

Could it be something wrong with the boiler end?

Alikay

Ours are lukewarm too - and like you, I was worried because my brother in laws gets lovely and warm, whereas ours, well ...it just takes the chill off the tiles really!
When I phoned the manufacturer (Floor Warming Company) they seemed to think that if the thermostat SAID 23 degrees, then it WAS 23 degrees. All I can say is that the degrees in our house must be a different type of degrees to my brother in laws! The tiles are regular thickness ceramic by the way, on 10mm insulation board.

We paid extra for a mat that supposedly is suitable for a "sole heat" source, but it's certainly not warm. Like I said, it simply takes the chill off the tiles. I got the installer back in, but the mat is working just not getting as warm as we expected. I wish the manufacturer would come and look at it, because I wonder if the thermostat is faulty, but they were not at all helpful and seemed to think I was expecting the floor to feel radiator-type hot.

victoriav

Thanks for replies, interesting, and good points. Mine has no insulation board, could this be it? Also, it is not run off a boiler, it is just connected to the electricity supply.

benichembla

The main thing with Underfloor Heating is Steady warmth over a period of time, 23 to 25c should be the perfect heat, as long as you have the heating on for 5+hrs and also keep the floor at about 18-20c when in the setback mode. Assuming your system works the same as Electric Underfloor Heating.
Regards

One_Day_Rodney

Be aware that systems may use different control and measuring methods -

-- some use a temperature sensor buried in the flooring. Therefore the temperature shown on the controller will be the temperature under the floor covering and not the room temperature. There could be a difference of several degrees between the two.

-- some use a room air sensor/thermostat with the heating media being controlled seperately (in the case of water systems by the thermostat on the manifold).

-- the more sophisticated systems use a combination of the two, with each limiting the other e.g. the floor temperature maybe lower than it's setpoint, but will be held off because the room temperature is high (spec. conservatory). Some may work on a 'compensated control', where the outside air temperature is also monitored and the heating setpoint is controlled to a sliding scale i.e. the colder outside, the higher the setpoint and vice-versa

Most electric systems will only use a sensor buried in the flooring to do the control.

benichembla

I agree Most Electric Underfloor Heating do use just a floor sensor, you can get air&floor sensing thermostats, normally these have a built in Max setting for the floor to avoid any possible damage to the cable.

Snow_Dog

benichembla wrote: »

I agree Most Electric Underfloor Heating do use just a floor sensor, you can get air&floor sensing thermostats, normally these have a built in Max setting for the floor to avoid any possible damage to the cable.

Does anyone smell spam?
:think:

james1911

i have used warmup underfloor heatingsystem from duston electrical for quite sm time now. a great product with lots of benefits like

• Is Invisible and takes practically no living space.
• No dust or any other by product is created by warmup underfloor heating.
• Even distribution of heat as warmup underfloor mats are fitted to each individual room.
• Warmup underfloor heating combined with thermal insulation is able to heat an area quickly, requiring the system to be turned on for a minimum amount of time.
• 15% reduction in heating energy costs.