|Former Member||06/02/2022 21:00:22|
|1085 forum posts|
[This posting has been removed]
|1354 forum posts|
The system that I have seen, consisted of a "trench" in the concrete floor of the offices, running around just below the windows adjacent to the exterior walls. In the "trench" were two copper pipes, 15mm dia.(?) with square copper fins attached, possibly 1. 1/2" or 2" square(?) maybe 1. 1/2" ? apart. Top of "trench" covered with fancy patterned Ali grating until the pikeys broke in and knicked it after the building was left vacant for a few months. Whether that design is common or not, I've no idea.
|932 forum posts|
Some people are not too enamoured with underfloor heating, I think it would be better in a new build with proper insulation under it, otherwise you will be heating the ground. All types of heating and insulation need to take a lot of factors into consideration in order to compare them. One type will best suit your house so don’t just think that because someone in your street swears by something that it will fit with yours.
|Robert Atkinson 2||06/02/2022 21:33:26|
1245 forum posts
A little context would help
I'm not sure about air-water ones when keeping existing radiators. The radiators were designed to work with hotter water than the heat pumps can create efficiently. Using underfloor heating with them seems much more reasonable. Lower temperature but larger surface area for same energy.
|Nick Welburn||06/02/2022 21:43:19|
|134 forum posts|
We have it, it’s basically just making the floors into a big radiator. Obviously lower temp otherwise you’d cook everything.
Takes a little time to get used too. First year we left the wrapped up xmas chocolate under the tree on the carpet
|pgk pgk||06/02/2022 21:45:47|
|2605 forum posts|
When my old Dad designed and built his bungalow in the early '60's, central heating wasn't common. He routed all the pipework underfloor to the rads, which was neat and quite nice to have areas of warm floor. Inevitably, settlement lead to a couple of leaks which damaged an area of parquet before being obvious.
|2445 forum posts|
Yes the floor will be warm to touch, it has to be in order to produce the heating effect.
Many years ago I was installing a lattice of resistive heating cables that were directly encased in the 2" thick floor screed.
Most underfloor heating currently used is the wet system where loops of ususlly high temp plastic tubing is buried in a sand and cement screed. It is normal to control the flow of hot water by using a motorised valve controlled by a room thermostat, the heat source feeds a manifold where numerous circuits can be tapped off, each having it's own controlling stat and motorised valve.
In all similar installations heat is never instant, it can take several hours to get the screed to a reasonable temperature to raise the room temp, unlike a wet radiator ststem which can be piping hot in around 20 minutes.
8895 forum posts
Keeping the room warm requires a certain amount of energy in the form of heat. Various ways of providing the same amount of heat:
So a huge surface, like an underfloor heater, can be operated at a lower temperature and work as well as other systems. Surface area and temperature are inter-related.
All of them rely on insulation to make sure energy isn't wasted.
Edited By SillyOldDuffer on 06/02/2022 21:56:52
|Nick Welburn||06/02/2022 21:59:45|
|134 forum posts|
Yep, our kitchen space, 110sqm or so of slate flooring has about 30-35 degrees on the manifold.
|Ian P||06/02/2022 22:16:31|
2594 forum posts
Edited By Ian P on 06/02/2022 22:17:51
Apologies for not creating a sensibly usable link
Edited By Ian P on 06/02/2022 22:19:05
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