Comment Re: What Would be a Trivial Amount? (Score 1) 198
Note: skylights are poor thermally and let a lot of heat out. Also I had one in a previous house in the bathroom where the seal was so bad (thus clearly leaking air too) that I had the surreal experience of being hailed on in the bath.
Also, have skylights ways from south (if you're in the northern hemisphere) to avoid excessive glare and overheating.
BTW, I have triple glazing now! Overall heat consumption from natural gas was 3000kWh last year and electricity 1700kWh.
http://www.earth.org.uk/saving...
Rgds
Damon