I'm considering buying some unglazed window frames from someone's unfinished project, for my own. Before I decide if this is economic, can anyone give me a rough idea, from your experience, of the sort of price I;d have to pay for double-glazed units to go in them? Each casement is about 1000 high, 600 wide and divided into two, horizontally.
Do the frames need to have trickle vents for building control (going itno new dormers), or can I get away with vents in the surrounding woodwork?
Regards Richard