Mold behind kitchen units on external wall

[Ikneweskimo]

Hi,

I've just ripped out the kitchen in the house I moved in to a few months ago . Behind the units on the external wall there's mold, but only low level.
Some of the skirting was also rotten, and the some of the units were moldy on the back boards (inside and outside the carcass)

I know the house was vacant for quite a while whilst I was going through the process of buying it- covid delayed tenants moving in whilst I rented it out for some time aswell, I'm wondering if the house being vacant for 8 months or so could contribute to it?

There was also a dishwasher on the left hand side of the wall which seems to be more moldy than the right side, so maybe condensation off that? It didn't work when I moved in so It hasn't been used for quite while.

There's holes in the bricks low level which I'm guessing is evidence of some sort of damp proofing previously done? There's also a deck raised deck outside against this wall, maybe that's caused some issues?

The kitchen floor is concrete

There's never been an extractor fan above the hob either so I doubt that helps things, but the oven and hob are on a different wall which shows no sign of mold
The problem is I don't know if its an issue like a leak or rising damp that has been addressed already or if its an on going one. I don't want to fit the new kitchen over jt to have that go moldy too - however as of now I don't have a kitchen either!

The water in the floor in the pictures is from me removing the sink.

Any help would be greatly appreciated

 

[Jimbo]

Pretty normal tbh. I would consider replacing that copper water main which appears to be set directly in concrete.

 

[Wayners]

Looks like damp proofing injection holes?

Condensation is a lack of air flow so the wall drops in temperature causing moisture to form on surface. Create airflow or insulation withing or over the wall will lower the due point.

 

[Sam-m]

I’m a plasterer and renderer , curious to wether fitting IWI ( internal wall insulation ) under these areas on external walls will solve the problem ? My thinking is by insulating these areas it makes it less of a cold bridge so should bring the wall temperature up above dew point ?
Open to suggestions, Thankyou

 

[qwas123]

The thread is from 2021 and the circumstances might be peculiar to that kitchen eg. an attempt at injection damp proofing can be seen.

Applying insulated plasterboard can help but its horses for courses given the various circumstances and constructions that might be involved - so yes it might help but you would need to weigh the job up on site or on a forum like this more info and photos would be needed.