Hi,
I have a single brick utility garage extension which runs along the side if the main house (original survey indicated it was built later).
In the back of the house is the kitchen which leads into the utility section of this extension.
There is a damp or moisture issue affecting a particular section of the rear wall of this extension in the bottom corner where it meets the original house. This can be seen via peeling paint and painted skirting being damaged. It seems to also extend along the perpendicular wall which separates the kitchen/utility at low levels.
There appears to be damp proof course on inspection outside but unsure of its condition.
Of possible reasons for this;
The area not insulated inside. Single brick extension with no internal insulation in the area of issue. Other parts of room have thermal insulation board up.
Room contains dryer, washing machine, fridge - condensation in area finding the cold wall?
Brick pointing looks poor in area directly outside where the issue inside is (crumbling in places).
Washing machine outlet pipe and downpipe from bathroom feed into 2 outside drains in area where issue occurring. If water splashing up when entering drain, would this be a issue?
Any advice would be appreciated on how to identify the main cause(s) and best remedies.
