I have a single story GRP flat roof that is 5m x 5m. The joists are 225mm x 50mm and are spaced at 400mm centres.
I want to put a glass skylight in the centre, it is 1.7m x 1.3m and weighs approx 100kgs.
Could anyone advise on what size joists and trimmers I'll need to put in to support it properly? The 1.3m is the going across the joists so I'll need to cut out 3 joists.
Any help would be awesome
I want to put a glass skylight in the centre, it is 1.7m x 1.3m and weighs approx 100kgs.
Could anyone advise on what size joists and trimmers I'll need to put in to support it properly? The 1.3m is the going across the joists so I'll need to cut out 3 joists.
Any help would be awesome