Wood surface must be clean, dry and frost-free with a maximum moisture content of 20% (be cautious with woods with high moisture such as Green Oak). Clean or slightly sand old microporous finishes, remove old varnishes or lacquers by sanding. Sand carefully before application starting with a coarse paper – final sanding for flooring P100-150, furniture P180-240. Remove dust etc. thoroughly from the surface before application with a vacuum cleaner. Application temperature preferably over 5°C.