Ready to hire?

Post your job in minutes, browse real reviews and choose who to speak to.Post a job

Need some tips or advice?

Damp Proofing

Mould due to holes in partition wall?

Anonymous user 28/02/2024 - 3.34 PM

Hi, I own a top floor flat that was build in 2012. I've got some mould appearing on the living room ceiling in a very localised spot. Is it possible that this might be caused by drilling holes into a partition wall, which separates my flat from the next door flat, to put shelves up? It's just that it occurred a few months after we did this. I'm wondering if maybe warm air from the flat is escaping into the walls and hitting cold air in the partition, which is then condensing. The guy that put the shelves up did a terrible job, and made bigger holes than necessary, so that's also making me wonder. There's no sign of damp per se. I guess I should also get the roof inspected for leaks too. Thanks, Adam

Are you a tradesperson and able to answer this question?

2 Answers

AG Brickwork

Rating: 4 out of 5

Derby

I would guess the roof is leaking. I would definitely get it looked at asap as it's only going to get worse. I also do not believe that this has been caused by the drilling of holes in the walls.

Answered5 February 2018

Anonymous user

If you have black mould spots in places then it would relate to condensation, if you had a roof leak it would be yellow/orange staining and wet to touch. If the mould is occurring around the edges of the ceiling near exterior walls it could be that insulation in the loft doesn't go right to the edges leaving cold spots where condensation can occur. Will be down to no insulation or lack of ventilation. Wash mould using white vinegar or fungicidal wash a couple of times to kill mould then monitor. It may only be during winter months.

Answered5 February 2018