ادویه قهوه و سیر آسیاب شده

Hi DaveOmell, it really depends as you have alluded to on the existing render and how good it is. You can remove where it is coming away from the wall and use our filler to smooth the surface ready for the basecoat. If you are unsure how strong it is, we do recommend doing a pull test, this involves using our EWI-220 adhesive and sticking a few bits of the EPS insulation to the wall. Then try and pull the EPS off the wall. If the EPS comes away in your hand then the underlying render is sound. If when you pull the EPS, it comes away with the adhesive and the existing render then you are better off stripping that area of existing render before you start. Theo Amrein