Hi. I am having my rear dining room extended soon and wanted to know what type of lintel to use when the outside load bearing walls are opened up. The opening will be 3 metres so i am assuming i would need a 3.3 metre lintel. Could a catnic lintel be used or do i need an RSJ.
The house is a 1930's 3 bed semi with rosemary tiles to the roof.
The house is a 1930's 3 bed semi with rosemary tiles to the roof.