Hardi™ is a fibre-cement product and the LP product is a chip-board/resin composite. The Hardi™ comes both finished and unfinished, the LP is unfinished and must be painted with a high quality exterio ... read more
It depends on the type of window. Is it just a glass replacement or does really need the entire sash? Sometimes, the I.G. unit can be replaced using the same frame.