Planning to have a conservatory built onto the house I am moving into next week. Any thoughts on under-floor heating? Advantages/disadvantages? Types available? Costs? DIY or professional installation? Cheers in advance
If the conservatory is for occasional use and can be shut off from the rest of the house a wet underfloor fed from a hot water tank also under the floor and heated by a water filled solar system offers reasonable comfort for three seasons a year (except this July :-) and has zero running costs.
I installed UFH in my new conservatory last year and used the following.
formatting link
connected it to my existing CH system via the drain points which I extended to the outside of the conservatory. I did all the heating bits myself and the builder put the screed over it. We use the room all the year round. It is super I wish I could do the whole house like it. Baz
Firstly, planning permission does not relate to the energy or construction specifications of the building.
The applicable legislation is in the Building Regulations which are the province of a different local authority department.
There are exemptions in both sets of legislation for conservatories of up to a certain size, in certain positions and with certain construction methods used. The effect is that the vast majority can easily be designed to be exempt.
One of the Building Regulations requirements for exemption is to make the conservatory outside the insulation environment of the house - therefore doors and windows leading into it have to be of exterior standard.
Another, relating to heating is that it is permitted to heat the conservatory, but there must be a means of independent thermostatic control. So you can add radiators or UFH, but there must be a means of controlling it separately to the rest of the house.
True, but I think that can be worked around without much difficulty. Actually, not true, with TRVs the water will always go through at least one rad. Thus the water arrives at the ufh with always at least partial temp drop.
As Andy Hall explained, you msut have thermostatic control on your ufh. What I had in mind was to put a 2nd thermostat somewhere on the ufh pipes, and set it to switch off ufh circulation when a certain water temp is reached. So when the water supply is not too hot it will function as usual. And when the water becomes hot, as it will do at times, the circulation will be switched on and off in the ufh pipes instead of run continuously on. This will maintain the level of heat coming from the floor slab, and not cause overheating.
You can get UFH kits with a pump and a blending valve. These take water from the flow side of the boiler, blend it with cool water from the return of the UFH and pump it through the UFH circuit. Thus, you have an auxilliary pump circulating water in effect around the UFH circuit with a little hot introduced to raise the temperature. Some of the return water from the UFH circuit will go back towards the boiler.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.