Underfloor heating under tiles - how long to come through

Over Clocker · 4 Jun 2009 at 20:17

Hi guys,

Quick question - An underfloor heating wire under a tile floor. How long approx from turning the wire on to feeling the tiles warm should it be?!

Anyone with this system?

Cheers guys!!!!!!

Mal

Fido McNasty · 4 Jun 2009 at 20:27

It depends on what kind of matting and tile, but between 3 and 8 mins roughly.

TheCrow · 4 Jun 2009 at 20:30

I would say about 15-20mins till tiles will be noticeably warmer underfoot.

Over Clocker · 4 Jun 2009 at 20:38

Thanks guys. Have found a place saying between 10 minutes and 10 hours depending on whether it is insulated underneath or not!

Fido McNasty · 4 Jun 2009 at 20:40

Lets just say then that if you're not noticing any heat at all after twenty minutes that we have a problem.

There are types of wire matting and many different thicknesses of floor tile. If lets say we're running a 150 watt per square meter matt under quarry tiling, about 8 mins and it should be warming. Thinner ceramic tiles, less. Marble tiling would likely be much longer. etc...

int · 4 Jun 2009 at 20:40

42 seconds or the time it takes me to eat 5 digestive biscuits.

Fido McNasty · 4 Jun 2009 at 20:41

Over Clocker said:
Thanks guys. Have found a place saying between 10 minutes and 10 hours depending on whether it is insulated underneath or not!

Holy smokes, 10 hours? Gosh

WasteTimeChangingCars · 4 Jun 2009 at 20:45

would love to have it

Over Clocker · 4 Jun 2009 at 21:14

Cheers guys - had just wired it all in and was wondering if it is working after 5 minutes

Has been on for about 20 minutes now and the tiles are now not cold

Getting warm in fact. Will leave it on for a bit longer to see how warm they get

Kol · 4 Jun 2009 at 21:27

Under floor heating is amazing. I didn't actually realise I had it until a week after I moved in :O I suppose it was nearly Summer, though. There is something quite nice about having toasty feet in the kitchen and bathroom.

LOAM · 5 Jun 2009 at 11:04

insulation over the top of underfloor heating is epic fail, all its doing is stopping the heat getting to where is should be. Bonkers.

Le_Petit_Lapin · 5 Jun 2009 at 11:42

Bout 10-15 mins here.

Goksly · 5 Jun 2009 at 12:15

Slippers tbh.

Over Clocker · 5 Jun 2009 at 15:21

LOAM said:
insulation over the top of underfloor heating is epic fail, all its doing is stopping the heat getting to where is should be. Bonkers.

Underneath it, not on top lol

To stop all the heat just heating the concrete floor.

Le_Petit_Lapin · 5 Jun 2009 at 15:34

Over Clocker said:
Underneath it, not on top lol

To stop all the heat just heating the concrete floor.

Surely its like this: (reverse order, starting from bottom)

Ground
Dampcourse
Insulation
Heating Pipes
Screed
Floor Tiles