Webber OCR, Pregrit?

Andy87

New Member
Rendering a couple of walls, in a back garden this week. It’s just going straight onto brick. Using Webber OCR, but does it need a Pregrit, before it goes on? Any help be appreciated. Cheers
 
Rendering a couple of walls, in a back garden this week. It’s just going straight onto brick. Using Webber OCR, but does it need a Pregrit, before it goes on? Any help be appreciated. Cheers
No but rendered walls in back gardens eventually get stained and algae build up pointless
 
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