Dulux Trade Polyurethane Varnish is a high build solvent-based interior varnish which gives a tough and durable finish to interior doors, furniture, joinery and trim. It can be used over bare wood and previously stained or varnished surfaces. It withstands knocks, scuffs and spills and is suitable for interior wood, veneer, cork and chipboard. The normal finishing process is 1 - 2 full coats of varnish. Coverage, up to 16m² per litre on most surfaces and will be touch dry in 6 - 8 hours and re-coatable in 16-24 hours. This product should not be thinned. After use, remove as much paint as possible from brushes or rollers before cleaning with white spirit.