advice on to seal or not? durox blocks b4 rendering??

[noseall]

 

[rattyboomboom]

thanks legs...sounds like the advice i need..ta very much...
but what about the ( "pva on dry and dusty walls" ) do'es this apply to my f...g durox blocks.....(god i wish i never had it built in durox )

 

[jbonding]

thanks legs...sounds like the advice i need..ta very much...
but what about the ( "pva on dry and dusty walls" ) do'es this apply to my f...g durox blocks.....(god i wish i never had it built in durox )

Pva is sound for killing the dust and killing the suction but i wouldnt rely on it as a key for the render.

 

[ablenwilling]

hello guys,im doing a similar project in building a garage for my little brother (first ever try but he who dares, Rodney ) and i will be using Durox blocks myself and wondered about the waterproof issue and rendering afterwards.....'legs' sounds very knowledgeable and i will go his way, but can i not PVA before the scratch coat at all? his 'never never never' being countered by a comment saying 'it is ok'?........my plan was to render straight on but the suction issue ive read about online made me look into it a bit deeper and led me here.....(medusa noted ty fella)........thanks