Damp

[EverDon Tiling]

Hi all just a quick one I've got an outside shed that's been boarded and plastered in the past but sufferers from damp mainly staining. Do you think giving it a few coats of Mapei Aquadefense and then just painting over it would stop it.

 

[DHTiling]

It might stop it coming through the surface but could also drive it upwards etc etc.

Source the damp problem is the key I say.

 

[EverDon Tiling]

It's constructed of single skin walls there's always gonna be damp its only an out house just sick of peeling paint and staining just wondered of This might solve it for longer.

 

[DHTiling]

Ah single brick. , well it will always be wet at certain times of the year.

I would use a render tanking.

 

[widler]

If its rendered outside, you could spray silicone on it or some other waterproofer.
Its just striking through probably, unless it condensation from a drier or washer being on !

 

[Colour Republic]

If you sort out the damp... take the boards off, tank the walls, cheapest would be to bitumen and throw dry sand at it whilst still tacky, then render.

If you sort the damp out some other way, then to get rid of the stains paint with Zinsser B-I-N followed by what ever paint you want.

If it's constantly damp and you want to just tart it up cosmetically and have it last more than just a few years, then paint it with Zinsser Watertite

 

[Colour Republic]

here you go

Zinsser Watertite - Zinsser Watertite Waterproofing Paint

Zinsser B-I-N - Zinsser BIN - Primer Sealer and Stain Killer

 

[Artisan998]

Tank it or frame it insulate and board it is another good option (if you have space obviously). most paint products are never a proper solution. IMO

 

[White Room]

here you go

Zinsser Watertite - Zinsser Watertite Waterproofing Paint

Zinsser B-I-N - Zinsser BIN - Primer Sealer and Stain Killer

The stain is good stuff, not cheap but good....

 

[Colour Republic]

Tank it or frame it insulate and board it is another good option (if you have space obviously). most paint products are never a proper solution. IMO

Agreed you need to sort the root problem really but from everdons post I get the impression it is purely cosmetic in which case both those paints listed are pretty high spec and not the sort of 'damp proof paint' you see in DIY sheds.

but then as white beam says, not the cheapest paint you'll ever buy.

 

[ian158]

Tank it or frame it insulate and board it is another good option (if you have space obviously). most paint products are never a proper solution. IMO

yep been there done that..all these promises of it will breath etc...make a cavity