Hello. I have a back-to-back red brick mid terrace house in the UK. There is a
large crack in an internal wall on the 2nd floor. The wall between the
bathroom and the bedroom. The crack runs diagonally up in a step pattern from
the bottom corner where the wall joins the external wall. The crack is visible
on both sides of the wall. It is no more than 5mm wide at its widest parts. I
cants see signs of cracks on the walls below. Can this be due to the support
of the 2nd floor weakening? Or is the wall bowing. Please can anyone help me
work out what is happening and what might need doing to fix it please

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