Bona D500 is a waterborne primer designed for the preparation of substrates prior to the application of adhesive. The substrate is improved by binding residual dust and reducing the absorbency of the subflooor, therefore aiding adhesive application. D500 must be diluted 1:1 with water prior to application by brush or roller.

NOTE: If Bona R850 adhesive is to be used, Bona R410 should be used instead of Bona D500.