I am at the planning stage of a self build project of a timberframe bungalow (approx 90 sq m area). The building plot is in a rural location, so either electric, oil or LPG are the choices and I am wondering how efficient and economical electric underfloor heating is. My current house has an oil fired combi boiler supplying conventional radiators and for water heating but I was considering the all electric option for the new house but have no experience of it with regard to heating. I know a couple of people who have installed U/F heating in their conservatories but don't kow anyone who has done a whole house with this system. The timberframe kit, which will be pretty well insulated and have underfloor insulation, comes with T&G chipboard flooring sitting on floor joists - would this be suitable? How cost effective is it? Any comments welcome.