We are looking for inward-opening windows, with a 'hidden sash'/'concealed sash' design, similar to 'Cortizo COR 70 Hidden Sash' (pic attached), where the opening sash does not overlap the fixed frame at all.

 

I can't seem to find any with this design which are alu-clad timber framed, only PVC/aluminium.

 

Is there anything out there which suits this spec? Failing that, which alu-clad inward-opening windows have the slimmest opening sash overlap out there?

 

 

How deep are your pockets? Have you looked at Idealcombi Futura+?

If you're looking for better u-values but not necessarily timber clad then Decalu 88 Hidden might fit the bill too.

Not a personal recommendation for either, but these are solutions I've bumped into researching options for our build

2 hours ago, torre said:

How deep are your pockets? Have you looked at Idealcombi Futura+?

If you're looking for better u-values but not necessarily timber clad then Decalu 88 Hidden might fit the bill too.

Not a personal recommendation for either, but these are solutions I've bumped into researching options for our build

 

Thanks for the tips... however, neither of these are timber-frame alu-clad. We're specifically looking for alu-clad timber with a clear-lacquered internal finish, to match our existing Velfac 200E units.