Hi guys , I'm roughcasting an external wall but I need to apply some kind of waterproofer/Sealant before I roughcast the external wall. Any tips on the best product to use would be greatly appreciated.
Cheers, Robbie.


Well-Known Member
Why not seal after you’ve rough casted? Or do you mean primer/bonding agent? What you using to roughcast?


Private Member
Do you mean hand applied roughcast?

Everbuild Rendagrip will seal your substrate. Brush on the day before.