I`ve had a wooden window frame custom made for an opening where I`m replacing a rotten window. The rebates are big enough for Double Glazed units, so I`ve had a couple of units made to size. I need to install the glass into the frame but don`t know how to. I`ve done single glazed windows before using putty but this is a different kettle of fish. I`ve been warned by the DG place that the units will fail if not installed correctly. Do I use some kind of mastic, beeding, spacers? Any help would be appreciated !
Steve