under floor heating kit

[whyme!]

i was wondering which of these http://www.plumbnation.co.uk/site/speedfit/
would best suit me.
It is for a kitchen and a shower room off the kitchen.
Kitchen is roughly 4.5m x 4.6m total floor space although kitchen units will cover some of this area.(should pipes be run under units too),
shower room is seperated by door and roughly 3.4m x 1.2m
And would this control unit be ok with a combi boiler?
When laying the floor insulation prior to screeding, should joints be taped?

 

[simond]

You should get advice from the manufacturer, who have a technical help line.

However, generically, good practice dictates that the shower room and the kitchen should be on separate zones, with separate room thermostats. A wall thermostat in a shower room should be low voltage.

If you are planning an underfloor heating area to work in conjunction with radiators elsewhere, then unless you want an 'all or nothing' scenario, zone valves will be needed to separate the UFH from the radiator heated areas.

It is possible to run a combi heating circuit into a set of zone valves.

However, this is our day job and specifying the system unseen over the internet to someone who is inexperienced is not a good idea, for both of us probably.

Get the documentation from Speedfit and it will either make sense to you, or you will need a professional.

PS: Taping the joints in the insulation is not normally required, especially if you use theJG Speedfit castellated pipe sheeting. But the expansion tape round the edges is really important.....and no, don't run the UFH under fixed items like kitchen units.