Wakol D3045 Gritted Primer is also ideal for situations in which a primer, such as the Wakol PU280 Polyurethane Primer or the Wakol MS330 Silane Primer has previously been applied. These primers provide the subfloor with a filling, smooth layer, to which the levelling compounds cannot adhere sufficiently. By priming with Wakol D3045 Gritted Primer after applying one of these two products, sufficient adhesion between the levelling compound and the subfloor will be created.