We have upvc frames, double glazed windows with low e coating. We’re in western Vic, gets pretty chilly in winter. The low e coating we didn’t pay extra for, if we had to I wouldn’t have worried about it. We love the upvc frames. Don’t get cold like aluminium ones and extremely sturdy. We are building our ‘forever’ home which is why we went for the extra expense of the upvc. Longevity, thermal transfer and we liked the look of them a lot more than aluminium. There’s also none of the upkeep required by timber frames. We’re still building but we have seen how they perform through winter and summer (it’s taking us a while!). Through winter the house stayed very mild, we will rarely need to light the fire. Over summer house did get warm on extreme days but we are using scyon linear boards, not brick so I feel that has some bearing on it.

can anybody give a recommendation on slim profile good quality windows and doors available in Queensland? we are building a new home. Thanks

Beautiful but all I can think about are heating and cooling costs, so much glass means temperature transfer

2100 is standard for internal and external doors. The cupboards don't need to match the standard. The cavity doors may be taller for some other reason (to accomodate the track?).