Sliding sash style upvc

[Oz07]

Are there any decent makes of sash windows in upvc with good u values? All that I've seen look too chunky. I would wonder how good the window performs with seals as well not having as much compression?

Edited 16 hours ago by Oz07

[Mr Punter]

I have used the "Rose" range in a couple of properties.  They are pretty good lookilikies for trad timber.

[Oz07]

Yeh just had a look. They seem good. Thin bars, butt joints etc. 1.2 u value as well. What's the pricing like compared to timber?

[Mr Punter]

I think similar or more expensive, depending on the range.  Roseview are based on standard upvc profiles from Rehau and do lots of extra customisation and finishing.  Their top range is almost indistinguishable from timber.