Hi all.
Just finished building one side wall of a single storey extension, (other side still to do. Question is this....do i have to close the cavity of the inner and outer wall at the top? and if so what with.
I was planning of leaving it open.
Thanks foe any advise.
Just finished building one side wall of a single storey extension, (other side still to do. Question is this....do i have to close the cavity of the inner and outer wall at the top? and if so what with.
I was planning of leaving it open.
Thanks foe any advise.