On 14/06/16 11:56, dennis@home wrote:
On 14/06/2016 11:04, Tim Lamb wrote:
Underfloor heating.

Insulation thoughts... the existing ground floor has 25mm Jablite topped
with 22mm chip. Recommendation is to over fit 25mm of pre-grooved
insulation and a further set of flooring: chip + Vinyl or engineered
hardwood.

Downside is loss of height in doorways.

What is the real energy loss in heating a relatively uninsulated floor
slab in a roughly square building? For 24 hour occupation, doesn't it
come down to what is lost at the edges?

Nowhere near what is lost through the roof and walls before insulation.
I would guess at less than 10% before any insulation for a solid floor.
With 25mm of insulation that will take it down to about 2% another 25mm
will take it down to about 1%. Unless the insulation is really cheap and
labour free it will never pay for itself.

Confirming once again that Denise cant read a post before replying.

And has no understanding of heat loss in buildings or why its different
with UFH.

And this is the calibre of mind that thinks staying in the EU is the
right thing to do.

For him it probably is. Unable to think coherently for himself, and must
always buy 'microwave ready' pre-cooked opinion from the Guardian...



--
Canada is all right really, though not for the whole weekend.

"Saki"