Marks on wall

gadget88

So no damp fire damage floods on home report I am still worried by the wall though? But I do suffer some anxiety 

gadget88

Seen this in Google is it a possible cause? 

gadget88

Could it be this?

https://www.permagard.co.uk/advice/water-ingress-meaning

gadget88

Shows that in link above looks similar. 

Building faults – damaged or deteriorating mortar can lead to water ingress through the render. Any cracks in the brickwork or substrate will also allow water to get in. This can occur for a number of reasons including more serious structural issues. Any remedial work to the walls such as the addition of cladding and insulation, re-rendering can all cause issues that may lead to water ingress.

If you ask me that leak on the render may have caused some previous damp? Feel free to disagree?

ThisIsWeird

gadget88 said:

Seen this in Google is it a possible cause? 

Not when it's a party wall, not exposed to the elements.