Need a plan for electric UFH

[ZakUK]

Will be ripping hardwood floor out (around 20 square metres) and installing tiles with electric UFH with thermostat/app control
What is the best setup/what do i need to make it max efficient ?
Well, tiles of course.
Then UFH undeneath (any recommendations )?
What needs to go between concrete and UFH system ?

Thx

 

[Murdochcat]

Electric UFH is a very expensive way to heat a room

 

[ZakUK]

Electric UFH is a very expensive way to heat a room

What is "very expensive" ?
Ill use it just to heat the tiles, got radiator to heat the room.

 

[flameport]

What is the best setup/what do i need to make it max efficient ?

All resistive electric heating is 100% efficient at the point of use. It's also the most expensive form of heating you can get.

What needs to go between concrete and UFH system ?

A substantial amount of insulation, otherwise all of the energy you put in will be used to heat the concrete and whatever is below it.

Ill use it just to heat the tiles, got radiator to heat the room.

You don't need UFH.

What is "very expensive" ?

Even at a very low 100W/m² which would barely be enough to do anything, that's 2kW of connected load, 50p/hour to operate, and if used for only 6 hours a day which would just about be enough time to notice any heating effect, that's already £1000 per year and every year from now until it breaks just to slightly warm a few tiles in one room.

 

[ZakUK]

All resistive electric heating is 100% efficient at the point of use. It's also the most expensive form of heating you can get.


A substantial amount of insulation, otherwise all of the energy you put in will be used to heat the concrete and whatever is below it.


You don't need UFH.


Even at a very low 100W/m² which would barely be enough to do anything, that's 2kW of connected load, 50p/hour to operate, and if used for only 6 hours a day which would just about be enough time to notice any heating effect, that's already £1000 per year and every year from now until it breaks just to slightly warm a few tiles in one room.

It does sound expensive, although that amount assumes usage of 365/year. Defo woud not use it in summer, but still would cost a bit.

 

[foxhole]

Often overlooked , you can’t usually put any floor coverings (rugs etc) or furniture over he heated area .

 

[Rodders53]

Personally, I'd rip out ceramic/stone tiles and fit something warmer underfoot like a nice hardwood floor.

Any of the Tile places will help you design a ruinously expensive to run electric mat heating system.

Look at overlay wet UFH as well?

 

[ZakUK]

Often overlooked , you can’t usually put any floor coverings (rugs etc) or furniture over he heated area .

Not even a table with chairs ???

 

[ZakUK]

Personally, I'd rip out ceramic/stone tiles and fit something warmer underfoot like a nice hardwood floor.

Have hardwood floor at the moment and because it was not installed correctly, it started to warp. To the point that it started to lift in one spot, same way as if two sheets of ice pushing against each other. Scared to install wood again and risk same thing happening ...
Im really lost and confused, dont know which direction to go.

 

[lostinthelight]

For wood floors the subfloor needs to be bone dry any layed with good expansion gaps at the perimeter

 

[ZakUK]

For wood floors the subfloor needs to be bone dry any layed with good expansion gaps at the perimeter

Shall i risk it with wood again then ?
Hardwood or engineered this time ?

 

[lostinthelight]

Tape a piece of polythene to the floor for a day or two and check if moisture condenses on the underside.

 

[ZakUK]

Tape a piece of polythene to the floor for a day or two and check if moisture condenses on the underside.

Great idea. Large area or smaller will do ?

 

[lostinthelight]

A couple of square feet preferably in a few places

 

[ZakUK]

A couple of square feet preferably in a few places

Thx. Will post back in couple days !