Insulation board

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stuart23

Private Member
been advised by underfloor heating company to put 10mm insulation boards down before tiling because I have a concrete floor, is this necessary? Worried about the extra height
 

Pug

Well-Known Member
It's only 10mm mate, how low are your ceilings! If the specialists have advised it I'd do as they say.
 

zolco

Private Member
That's a new one, why would you need insulate over the ufh to receive the tiles? In my reading you would trap the heat from the ufh.
Or is it electric and they want to insulate the concrete slab?

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zolco

Private Member
They go down first, stop you spending money on heating the slab.
I don't think 10mm gonna do too much to be fair, usually we put 100mm celotex over the slab then ufh then screed over

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Merit

New Member
As pug says if it's electric
Boards first to concrete then your not heating the floor
Then ufh
It's advised that you self level the full area so the heating mat is fully enclosed
Any gaps and the ufh will burn out
 

Vincey

Private Member
Height is an issue to consider here...

How much insulation did you put on that ceiling Stu?
 

stuart23

Private Member
It's electric. I'm tiling from kitchen through to hall, the height I'm worried about is the doors going off hall into other rooms. 10mm mat, electric Matt then screed, adhesive then tiles?? It's going to be far higher than other rooms
 

flynnyman

Well-Known Member
I'm doing a wet room and I'm also putting the boards down first then the mat with a tight coat over the top. Make sure you fold it back where you will be fixing to the floor, the boards will deflect more heat up rather than loosing it through the floor.
 

stuart23

Private Member
I'm doing a wet room and I'm also putting the boards down first then the mat with a tight coat over the top. Make sure you fold it back where you will be fixing to the floor, the boards will deflect more heat up rather than loosing it through the floor.
What do you mean fold back?
 

stuart23

Private Member
So went to order tiles and guy in shop was telling me the warmup underfloor heating is by far the best stuff to put in but is far more expensive. Anyone know if there is that much of a difference between that and the normal stuff?
 

zolco

Private Member
Why you want electric UFH? There expensive to run, they alright in a small bathroom but not for full size rooms.


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zolco

Private Member
Well the electric is the alternative or retro fit of the water UFH, but id only do water UFH if anything bigger than a bathroom, much less painful cost wise in long term.
But you'll have to break up existing slab, lower it, then celotex then ufh then screed, probably cost more than the electric as a set up cost

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stuart23

Private Member
Well the electric is the alternative or retro fit of the water UFH, but id only do water UFH if anything bigger than a bathroom, much less painful cost wise in long term.
But you'll have to break up existing slab, lower it, then celotex then ufh then screed, probably cost more than the electric as a set up cost

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Fk that, electric it is


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zolco

Private Member
What's alternative and what's the costs in comparison?
Just done a water ufh, 40m², out with the old slab, new concrete slab, celotex, ufh screed all groundworks and plumbing was in the region of 10k+

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stuart23

Private Member
Just done a water ufh, 40m², out with the old slab, new concrete slab, celotex, ufh screed all groundworks and plumbing was in the region of 10k+

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Electric costing me £1500


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flynnyman

Well-Known Member
Electric costing me £1500


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Wow I think the customer payed under £200, wireless thermostat.
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stuart23

Private Member
With a 10% trade discount I'm getting 23m2 200w mat underfloor heating for kitchen with touchscreen thermostat and 6m2 with digital thermostat for hall. Including insulation coming to £1130. Can't get cheaper anywhere else.


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we have electric heating in our place.. not under floor but electric rads and they are soooooooo efficient... we have one in every room and we only need to have 2 on in our place.... and its a big place to be honest... Our water is electric heated...

If I was a landlord I doubt I would bother with anything else :D
 

Builderboi

Well-Known Member
we have electric heating in our place.. not under floor but electric rads and they are soooooooo efficient... we have one in every room and we only need to have 2 on in our place.... and its a big place to be honest... Our water is electric heated...

If I was a landlord I doubt I would bother with anything else :D
How's your water done Danny
 

flynnyman

Well-Known Member
With a 10% trade discount I'm getting 23m2 200w mat underfloor heating for kitchen with touchscreen thermostat and 6m2 with digital thermostat for hall. Including insulation coming to £1130. Can't get cheaper anywhere else.


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Still sounds expensive, I didn't include the boards but it was under £200 I will look for the receipt, I got it from tile giant.
 

Builderboi

Well-Known Member
We have a non vented hot water cylinder.... keep it hot 24 hours a day... we both have long showers and I love a bath... our shower pressure is not great downstairs though
Awesome gonna be Redoing a rental no heat at the mo or gas so rather than paying for a connection...
 

flynnyman

Well-Known Member
we have electric heating in our place.. not under floor but electric rads and they are soooooooo efficient... we have one in every room and we only need to have 2 on in our place.... and its a big place to be honest... Our water is electric heated...

If I was a landlord I doubt I would bother with anything else :D
The fan heaters that go in your kick boards are easy to fit and heat a room up very quick don't know what they are like on cost of usage but a quick and cheaper alternative.
 

zolco

Private Member
Awesome gonna be Redoing a rental no heat at the mo or gas so rather than paying for a connection...
You can get electric central heating these days, the boiler looks like a gas boiler, not sure how much it costs to run tho

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