Concrete

Concrete to be treated must be at least four weeks old, completely dry and free of surface laitance (a weak dusty layer on concrete), contaminants and any previous poorly bonded coatings. All traces of grease or oil should be removed with Watco Bio D (or a similar degreasant) and the area thoroughly washed off and allowed to dry. Very smooth concrete or concrete with surface laitance should be etched with Watco Cemtetch to ensure adequate adhesion. The concrete should be thoroughly washed down and allowed to dry after treatment with Watco Cemtetch.
Stone
Stone should be dry and free of all loose surface material and contaminants.
Painted Surfaces
Previously painted surfaces should be thoroughly abraded by sanding to improve adhesion and to remove any weak or loose material. A trial area is advisable to test compatibility with previous coatings.
Bare Metal
Remove any rust and flaking material by disc grinding or wire brushing. Apply the coating immediately after preparation to the clean metal surface. Grease or oil can be removed using Watco Bio D a solvent free degreaser. Allow the metal to dry before coating.
Galvanised Metal
Do not apply the coating direct to galvanised metal surfaces without first preparing using Watco Galvaprime a single pack wash primer. Surfaces treated with Watco Galvaprime should be allowed to dry before coating.