Hi folks, I’m currently building a granny annex at the end of my garden, built from concrete blocks with a 100mm cavity. measuring at 7.2m deep, 5.2m wide and 2.5m high with a flat roof
Iv been toying with the idea of bolting two roof rafters together to make a beam to hang the roof rafters from, instead of using a steel I beam RSJ. As I believe this will be more cost effective in materials and labour.
(Beam width approximately 4.8m)
I just wanted to know if this is a good idea or not? And if so what size timber would be most suitable?
Would appreciate any suggestions many thanks
Iv been toying with the idea of bolting two roof rafters together to make a beam to hang the roof rafters from, instead of using a steel I beam RSJ. As I believe this will be more cost effective in materials and labour.
(Beam width approximately 4.8m)
I just wanted to know if this is a good idea or not? And if so what size timber would be most suitable?
Would appreciate any suggestions many thanks