Sandy
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Thanks both for your replies.
Board type insulation is simple enough by the sound of it.
Underfloor heating - I'm seriously considering the electric "mat" type of set up. It's thinner construction, no moving parts to break down or need repair, no potential for water leaks, ability to have different temp settings in each room.
I'm not suggesting you're wrong, but can I ask why you would assume water based underfloor heating?
From research I've done, I'm led to believe that £ for £, underfloor heating is more effective at heating than rads alone as the heat is distributed evenly across the whole surface area of the room, instead of a given radius around a wall mounted rad. At the moment, there is a central heating system in place and standard wall mounted rads. I appreciate that maybe in the coldest parts of winter underfloor heating might not be able to fully support heating a house, so there will be a need for some gas CH, but I just don't want to rely 100% on it if there is a more efficient option.
Of course, I could be completely wrong with my self-assessment, so I'm very much interested to hear other thoughts/opinions on it.
I also want to be able to take advantage of some renewable power sources (PV and/or wind) if I can get enough money together. Hopefully linked up will offer some support instead of relying 100% on mains power.
Regardless of whether I stick to wall mounted rads with gas CH, or move to an underfloor heating (water or electric), is insulating under the floor surface of any benefit, or likely to just be an unecessary expense?
Thanks again
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