WHEN SHOULD I PAINT? Take conditions into account. A dry day between 40°F and 90°F is ideal paint-drying weather. Start early in the morning so the door dries in time to rehang it before dark.
WHAT’S THE PREP? Removing and reinstalling the door is the main challenge, but it’s recommended. If you must leave the door up, remove as much hardware as possible or cover it with painters tape, and use a doorstop to keep the door in place during prep and painting.
WHAT PAINT DO I USE? Try an exterior paint like PPG Timeless Exterior ($42/gallon; homedepot.com), which can reduce fading, mold, and flaking. A semigloss finish can prevent scuffs and marks. A quart is usually enough for a standard door.
Jeff Spillane, senior manager for product training implementation at Benjamin Moore; Brian Osterried, PPG product marketing manager, interior paint; Octave Villar, applications lab manager at Behr