Finishing Doors

Wood is hygroscopic and dimensionally influenced by changes in the surrounding environment.  To prevent excessive moisture absorption, the entire door including all edges must receive at least two coats of paint, varnish or other properly applied sealer immediately after fitting, beveling and cutting for latches, hinges, weatherstripping, thresholds or other hardware.
Doors should not be considered ready for finishing when initially received.  Before finishing, door surface must be clean and dry, with a moisture content no higher than locally prevailing.  Any handling marks, bruises, dust, stamps or labels must be removed by sanding before application of sealer or finish.  Sand in a horizontal position with a 120, 150 or 180 grit sandpaper.  To avoid cross grain scratches, sand with the grain.
Certain species of wood may contain extractives which may react unfavorably with foreign materials in the finishing system.  Eliminate the use of steel wood on bar wood, rusty containers or other contaminates in the finishing process.
Door manufactures are not responsible for the final appearance of field finished doors.  It is expected that the finishing process will make adjustments as needed to acheive the desired results.
To reduce the chance of warping or veneer checking, dark colored finishes should be avoided on all surfaces if the door is expected to be exposed to direct sunlight.
Finishing should be at least two coats of paint, varnish or lacquer which is in conformity to minimum commercial standards, applied strictly in accordance with the manufacturer's instructions.  Water-thinned paint should be used only after application of an oil-based primer.