I did it on an existing house. It's very simple and not too expensive. I went for uPVC double glazed windows, doors etc. For a typical 1x1.5m window you'd prob

I did it on an existing house. It's very simple and not too expensive. I went for uPVC double glazed windows, doors etc. For a typical 1x1.5m window you'd probably pay around R3500 including installation.