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 9471 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… 7 17581 Hi, did you get any money from insurance? if you did, does it match what you've already paid the builders? 3 9565 |