SURFACE PREPARATION
All surfaces should be sound, stable with an even finish, free from dust, dirt, loose debris, grease, etc. Damaged surfaces should be repaired with one of GRANDSEAL concrete repairing products. Allow the repair mortar to dry before applying the Bitumen primer.
MIXING
GRANDPRIME SB is supplied ready to use at site. Prior application shake the barrel to remove any sediment. it can be applied with a roller, brush or with a spraying machine.
APPLICATION
GRANDPRIME SB is supplied as ready to use at site. Before application shake the barrel to remove any sediment. It can be applied with a roller, brush, trowel or with a spraying machine. Apply the primer by using roller or brush in a rate of 4-6 m2 per Ltr. Allow the primer to dry before applying the waterproofing membrane. In case of high porous substrates, it is recommended to apply a second coat on for better results. Each coat must be completely dry before the next coat is applied.