I have had quotes from the mainstream window suppliers (Norrsken, Velfac) for ali-timber clad windows, but I haven't really looked at aluminium window suppliers. Has anyone else had like for like quotes, eg same glazing and is able to say whether you are looking at 5% / 10% .... cost saving.
I did have one quote for aluminium doors and windows from a top end supplier and was rather annoyed to discover that there quote was basically my max specified budget. I won't name names, but lets just say, I won't be going back.
Just some recommendations to suppliers that I might not have considered would be useful.