Dee Verma
hi Mike, there are few now offering triple glazed windows. But be very careful in selecting - one, the system and two - who then fits it. there are far too many standard double glazed units incorrectly installed, because most installers fail to understand how a unit behave once installed in a window. if fitted incorrectly as they often are it will lead to failure due too stress imposed on to the frame which follows through to hinges and then locks and thereby jamming the window closed. this is primarily due to incorrect install and is down to transfer of sealed unit weight in the wrong direction for a double glazed unit. now add to this triple glazing, the weight increase is another one third. get the picture. there is a huge debate going on within the industry if triple glazing - is right but more importantly are the products into which they are being installed into able to cope with the extra that is required from the system for which it was not developed. read up on it. choose a supplier which offers a - bsi kite mark rating and operates a fully automated line when manufacturing units - it limits the error.
