- Joined
- 11 May 2009
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I'm planning to convert my attic into a rec. room and because I have to convert the attic firstly from a trussed roof into a pitched roof,an RSJ has to be installed.I was wondering do I have to install the RSJ the full length of the attic on both sides and what lengths and sizes must I use and how deep into the block work do I have to cut.