Underfloor heating .

[steptoe]

thanks bengie, its only a little bathroom, about 1m odd by 2m ish actual floor area, will be coming off the rad on the landing, back to back as such.

just seems loads easier than trying to make room for a rad that wont fit a smallish room.

 

[Megaohm7]

Seems like the plumbed in version of underfloor heating might be the way to go especially if the room is as small as most bathrooms including mine :_| . I did manage to plumb a towel rad on the wall and it is very effective in warming the room that was 4 yrs ago now and the missus hasn't moaned once about being cold whilst in the bath/shower

 

[bengie]

thanks bengie, its only a little bathroom, about 1m odd by 2m ish actual floor area, will be coming off the rad on the landing, back to back as such.just seems loads easier than trying to make room for a rad that wont fit a smallish room.

apparantly the only other thing to be careful of is flooring in terms of actual flooring construction and covering as both will affect the heating of the room. be care ful of most underlays as they act as insulation which obviously you don't want with underfloor heating but in a bath room you should be fine as you'll probably be going with a lino of some sort anyway. its certainly making my flooring choice in the bedroom ineteresting, we are going with a low thermally insulating underlay and thinner laminate(the missus is quite asthmatic so trying no carpet) so hopefully it should be fine. Helen(the missus) suggested a wood effect lino but i feel it would damage too easily in a bedroom.

 

[steptoe]

apparantly the only other thing to be careful of is flooring in terms of actual flooring construction and covering as both will affect the heating of the room. be care ful of most underlays as they act as insulation which obviously you don't want with underfloor heating but in a bath room you should be fine as you'll probably be going with a lino of some sort anyway. its certainly making my flooring choice in the bedroom ineteresting, we are going with a low thermally insulating underlay and thinner laminate(the missus is quite asthmatic so trying no carpet) so hopefully it should be fine. Helen(the missus) suggested a wood effect lino but i feel it would damage too easily in a bedroom.

ive got my 3/4 or so chipboard, then some 3/8 ply cos chipboard upstairs has so many cuts/dips etc am reflooring whole floor.

and yes, just some simple lino on top, so should be ok with flooring.

was thinking just to tap off existing landing rad,l could put TRV just beside bath with right angle to floor, woulod match in pretty good with landin rad position straight trhough wall almost, (stud too).

 

[ianmacd]

apparantly the only other thing to be careful of is flooring in terms of actual flooring construction and covering as both will affect the heating of the room. be care ful of most underlays as they act as insulation which obviously you don't want with underfloor heating but in a bath room you should be fine as you'll probably be going with a lino of some sort anyway. its certainly making my flooring choice in the bedroom ineteresting, we are going with a low thermally insulating underlay and thinner laminate(the missus is quite asthmatic so trying no carpet) so hopefully it should be fine. Helen(the missus) suggested a wood effect lino but i feel it would damage too easily in a bedroom.

What about engineered wood flooring instead of the floor boards?

 

[batty]

Seems like the plumbed in version of underfloor heating might be the way to go especially if the room is as small as most bathrooms including mine :_| . I did manage to plumb a towel rad on the wall and it is very effective in warming the room that was 4 yrs ago now and the missus hasn't moaned once about being cold whilst in the bath/shower

I heard she just stays right under the water but it may be only a rumour.

 

[bengie]

What about engineered wood flooring instead of the floor boards?

yeah that'd be nice, the same thickness as the boards but finished floor

we have that in the small bedroom(box room) as my uncle used to lay squash court floors for a living and he did this for my parents when they owned the house, looks good and is very durable.

 

[kme]

just to tap off existing landing rad,l could put TRV just beside bath with right angle to floor, woulod match in pretty good with landin rad position straight trhough wall almost, (stud too).

This could cause you problems mate, as UFH (wet) runs at a MUCH lower temp (less than half) of rads. Usually, a special manifold, with temp. reduction, is used to lower the water temp to the UFH!

Otherwise, it could be akin to walking on a radiator in the bathroom (i.e. too hot), given the temp. of the CH water.........

KME

 

[bengie]

This could cause you problems mate, as UFH (wet) runs at a MUCH lower temp (less than half) of rads. Usually, a special manifold, with temp. reduction, is used to lower the water temp to the UFH!Otherwise, it could be akin to walking on a radiator in the bathroom (i.e. too hot), given the temp. of the CH water.........

KME

its not that hot and thats not what the manifolds are for, they are there to control multiple zones(a room a zone is the norm so i've been told on proper installations).

 

[Lurch]

UFH runs at whatever temp the boiler churns the water out at. It's just the same as having all the pipes running under the floor to and from the boiler and rads etc... It's nothing like walking on a radiator.

 

[ianmacd]

The surface area of a pipe is a lot less than that of a rad so the head is dissapated more.

 

[Apache]

The surface area of a pipe is a lot less than that of a rad so the head is dissapated more.

Lot more I think you mean?

Also heat rises. Radiator is a misnomer - the majority of the heating they do is by convection.

 

[ianmacd]

Also heat rises.

Bad Patch. Hot air rises.

 

[Apache]

Bad Patch. Hot air rises.

Almost anything hot rises and becomes less dense except water

 

[ianmacd]

Almost anything hot rises and becomes less dense except water

Except heat

 

[bengie]

water does get less dense and rise when heated :S

 

[ianmacd]

water does get less dense and rise when heated :S

That's not totally correct either as was contracts when heated from 0 to 4degC.

 

[jl-heating]

the reason you use a manifold for under floor is the fact that it runs at 44 degrees so there is a blending valve fitted with the manifold to control the heat of the water to the UFH . rads run at 82 degrees, i would not want 82 degrees water heating a floor area in my house.

plus if u fit a manifold you can connect it to the boiler and zone the pipework so making the boiler come on an hr before the rest of the house and turn off an hr earlier there fore saving money.

it will work but not efficiently or will it be a comfortable heat or controllable.

 

[kme]

a special manifold, with temp. reduction, is used to lower the water temp

So I didn`t have the correct terminology. I`m sorry.

the reason you use a manifold for under floor is the fact that it runs at 44 degrees so there is a blending valve fitted with the manifold to control the heat of the water to the UFH . rads run at 82 degrees, i would not want 82 degrees water heating a floor area in my house. plus if u fit a manifold you can connect it to the boiler and zone the pipework so making the boiler come on an hr before the rest of the house and turn off an hr earlier there fore saving money.

it will work but not efficiently or will it be a comfortable heat or controllable.

I think that was the correct way of saying "wot I said", last page. To those who shot at me - nah-nah you missed! ROTFWL

Thanks JL - I`ll pop the twenty quid in the post....... :xO)

 

[Lurch]

I think that was the correct way of saying "wot I said", last page. To those who shot at me - nah-nah you missed! ROTFWL

Erm, yeah.