Can I spray Mohawks clear lacquer over an old finish?
Hi Solids Lacquer (clear or colored)? Yes for both. It will add a durable wear coat. B: A polyurethane Finish? No. Poor Adhesion. C: An Oil Finish? No over a fresh oil finish. Possibly over an old oil finish providing it is not a non drying oil and it is cleaned and sanded. (Testing by user is advised) D: Another manufacturers sealer, lacquer, or stain, etc. The best advice is to use one manufacturers products for the entire system. Mixing systems can often lead to problems for the user. E: Over shellac? Yes, with qualifiers. Lacquer applied over thin coats of shellac is considered acceptable. Thick coats of shellac tend to become brittle as the film ages. F: Over a catalyzed lacquer finish? Yes as long as it is not applied within the window stated by the manufacturer. If the finish is cured, the surface should be cleaned and scuffed. Only mechanical bonding is achieved.
