High penetrating primer, suitable for increasing the grip of porous surfaces such as concrete, plaster, bricks, clay roof tiles, cement boards, aircrete, marble, etc. that will be sealed using any type of polyurethane sealant. Necessary for expansion joints on roofs, for joints around door and window frames, as well as the junction of horizontal and vertical surfaces. It ensures unbreakable seals with long-lasting durability.
15-20ml/linear meter, depending on the width and depth of the joint