On 18/12/2020 08:38, Jim GM4DHJ ... wrote:
On 17/12/2020 22:12, Monique Castellani-Kraan wrote:
Hi all, could use some input on this because I'm a bit of a novice and
need to make sure I'm using the right tools for the job!

Our house was built in the 1940s and we've lived there for almost 30
years, and little did we know there was a badly filled-in air brick
inside my build-in clothes wardrobe. In recent years I wondered why I
had such a bad clothes moth problem and why my clothes smelled fusty.

The air brick is 6 ft above the floorboards, directly inside my
enclosed wardrobe. It is in a contained space consisting of only my
clothes wardrobe and bookcase inside my bedroom.Â* Photos here.
https://imgur.com/a/KCKaehO

It seems the previous people did a bodge job and filled it in from the
inside using only plaster filler, so of course over the years the
plaster has deteriorated and crumbled - and has now had an explosion
of mould growth that spread all over the walls and ceiling in the
upper storage section of my wardrobe. Had to absolutely blitz it with
bleach and throw a load of stuff away. (and for anyone wondering how I
didn't notice for so long - I use the upper level for storage so I
couldn't see what was happening until it was too late)

So needless to say this air brick needs filling in because of its
ridiculous location. Now the question is what do I use to seal this
flipping thing up for good so that this doesn't happen again?

It would have to be sealed from the inside as this is an upstairs
room. Would it be feasible to scape off all the old stuff, seal it up
with repair cement, then re-plaster and paint? Any help and tips would
be greatly appreciated. Brands and recommended products especially.
Thanks!

I would have thought your problem would get worse without the air brick
......


If this is a North facing and uninsulated wall then the only
solution is insulation (that doesn't cause interstitial
condensation).