Clean the joints, cracks, gaps from dust, oil, grease and loose particle, pre wet the crack with water for porous surfaces. Fill the joints, cracks, gaps by putty knife or spatula. Avoid formulation of bubbles or cavities while applying. A er application leave the surface for at least one day. Fill the Crack second time with Bondtuf Crack Seal if shrinkage is noticed. Allow it to dry for 1 to 3 hrs. before painting work is taken up.