Central heating in a garden outhouse...

[junksamiad]

What is the outhouse going to be made of? how well will it be insulated? and what is it going to be used for?

Thanks for all the replies so far.
It will be office space. It will be double skin block and render, 300mm insulated cavity wall. I normally just insulate the cavity with cavity slab full fill.

 

[Murdoch]

Thanks for all the replies so far.
It will be office space. It will be double skin block and render, 300mm insulated cavity wall. I normally just insulate the cavity with cavity slab full fill.

I would suggest getting a spark to sort out the supply, electrics and advise on the electric heating

 

[gpbeck]

Does your heat loss calculation suggest 3kw? Must be massive!

 

[SJB060685]

Do a heat loss calculation first to find out what watts or kilowatts is needed for the new building.

 

[gmartine]

Nows the time to increase the amount of insulation you were going to use (say add 100 +mm insulation board internally inc roof) so your left with less than 1.5 kw or less to heat building which you can easily manage with a couple of slim oil filled panel rads. The outbuilding will be more comfortable in the summer too without any need for any especially large electrical provision.

 

[king of pipes]

Insulate the hell out of the place floor walls ceiling with 100mm of celotex at construction stage , then use electric timed panel heaters , are you having a toilet and small basin a kitchen sink with the need for hotwater ?? You must consult a electrician before doing anything, personally I wouldn't connect it to the house gas boiler the pipe run and install costs just wouldn't be make it viable

 

[Brambles]

I think you will find that Building Regulations, require the pipes to be within a preinsulated pipe with an outer wrapping. The pipe is not cheap and neither are the fittings - but they work very well

 

[Ben-gee]

Another vote for electric heating and more insulation.