Does anti-condensation paint really work?

shiraz99

I've got this one bottom corner of a room that geta quite damp on occasion due to condensation simply because it's a bit of a cold spot with it being an external, solid brick corner that doesn't get the sun this time of year. I was thinking of trying some anti-condensation paint in the corner and was wondering if it actually works and not cause any further issues. Also, can someone recommend which one to try of they've successfully used it before.

Emmia

Do you mean an anti mould paint, of the type used in bathrooms? 

If so I've used Zinsser permawhite very effectively to eliminate mould.

grumpy_codger

Emmia said:

Do you mean an anti mould paint, of the type used in bathrooms? 
...

https://www.google.com/search?&q=anti-condensation+paint

"The Ronseal Anti Condensation Paint adds a layer of insulation to help prevent condensation ..." 

Utter nonsense IMO. Worse than 'insulated wallpaper'.

The picture is even more nonsensical

 

WIAWSNB

I can't imagine that the paint will prevent condensation, as it isn't insulating in any measurable way. But, it should be waterproof, so not be affected. Possibly it also contains mould killers?
I don't know.

victor2

More ventilation or reducing the humidity might be a better solution. There are various "anti condensation" paints available, but I've never tried one. Have used zinsser products to cover stains after moisture has come through the plaster, but after I'd rectified the cause of it being there in the first place!

WIAWSNB

Blimey, they reckon t does insulate:

https://youtu.be/2a2HbHCJbRU?si=1p2s4DWQlP5QpQEG

WIAWSNB

If that can truly raise the surface temp of a cold wall high enough to break the dew point, then it must surely also act as a reasonable insulation layer in general to prevent heat loss? 

Hard to imagine, but anyone have any idea? 

ButterCheese

We had exactly the same in a spare bedroom - corner of the house facing the incoming weather.  We used an anti-mould paint (I think it was Dulux but I'd certainly buy a known brand) and it has worked so far.  but we have also cracked the window open pretty much constantly.  Air flow is also a major factor, and covering it up with a bed for example will make matters worse.  If air can flow past it, you might not even need special paint, but doing both is probbaly best.  

shiraz99

ButterCheese said:

We had exactly the same in a spare bedroom - corner of the house facing the incoming weather.  We used an anti-mould paint (I think it was Dulux but I'd certainly buy a known brand) and it has worked so far.  but we have also cracked the window open pretty much constantly.  Air flow is also a major factor, and covering it up with a bed for example will make matters worse.  If air can flow past it, you might not even need special paint, but doing both is probbaly best.  

There's no mould to address it's just a small area that can get wet, particularly this time of year when the humidity is generally higher and the heating hasn't yet kicked in. The rest of the room is fairly well ventilated but this is a bit of a problem area in a forgotten corner under a window. I can resolve the condensation with my dehumidifier but I'd have to have it on constantly as the room (dining room) is next to the open kitchen. It's not a problem the rest of the year or when the heating is on full time.

ic

WIAWSNB said:

If that can truly raise the surface temp of a cold wall high enough to break the dew point, then it must surely also act as a reasonable insulation layer in general to prevent heat loss? 

Hard to imagine, but anyone have any idea? 

I understand it'll be available in a range of tartan next year.

Section62

ic said:

WIAWSNB said:

If that can truly raise the surface temp of a cold wall high enough to break the dew point, then it must surely also act as a reasonable insulation layer in general to prevent heat loss? 

Hard to imagine, but anyone have any idea? 

I understand it'll be available in a range of tartan next year.

It will be a long weight.