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I have always been against conservatories - cold in winter, boiling in summer! But after having my loft done a learned a thing or two about u values, and modern glass is pretty low - but is it low enough. What I cannot find is a guide to u-value comfort, e.g. room with u-values X will cost £y/hr to keep cosy at zero degrees. Have been looking at these Solarlux conservatories and they look perfect - but how can I be sure I won't regret it when the mercury hits minus five? The room will be a living room / dining room, not a fair weather one.
Basically, building regs says U Value of greater than 1.8 (I think that is currently the case), which I think these windows achieve, but is that enough for comfort in harsh conditions? I assume U-values are applied to windows in general - but an insulated wall and roof with a window is not the same as a wall and roof made entirely of glass!
(I was about to say, I bet most people will reply with "just build an extension" - so a poll! )
Basically, building regs says U Value of greater than 1.8 (I think that is currently the case), which I think these windows achieve, but is that enough for comfort in harsh conditions? I assume U-values are applied to windows in general - but an insulated wall and roof with a window is not the same as a wall and roof made entirely of glass!
(I was about to say, I bet most people will reply with "just build an extension" - so a poll! )