Browse Forums Building A New House Our standard double-glazed window is tested to achieve, Rw 34, and can be glazed to suit Rw 39. The price is good too... 3 9431 Thank you so much everyone. This all makes a lot of sense. I guess when you talk to a builder who butters up everything to look very polished, you get to start believing… 8 17190 thank you! do we need to get this or our builder before we commence new build on the block? 2 10260 |