Align the tip of the brush with the corner and move down the frame with a long sweeping stroke until you reach the bottom jamb.
Paint peeling off door frame.
Make the surface as smooth as possible even if that means you have to sand off the entire previous coat of paint.
Peeling at wood joints could largely be prevented by sealing the end grain with primer.
Use a linear up and down motion to cover the surface.
It s usually okay to paint over latex with oil based paint one possibility is simply age paint does not last forever.
The question was about doors or wood.
Step 1 scrape off the peeling paint with a paint scraper then sand down the door with your hand sander paying extra attention to the areas that were peeling.
Incompatible paint layers will cause peeling paint.
With low vocs this water based binding primer is three times thicker than regular primers and locks down and hides peeling weathered surfaces to create a smooth white finish for your top coat.
For example when latex based paint is used to cover a previous paint job that used oil based paint peeling will occur.
The trade off is that the larger grit sandpaper will also scratch up the door frame itself so use a grit that removes the paint but doesn t scratch the frame.
Begin painting in the upper inside corner of the door jamb and door stop.
Sand down the rest of the frame to remove any leftover peeling paint.
It s best to paint inside in an air conditioned area.
Fill holes and gouges in the door with vinyl spackling using the scraper.
Bad paint or primer frozen or some form of oil dirt dust on the door.
Use a bonding agent intended for metal to patch steel doors.
Load the upper third of the angled tip brush with paint.
However humidity also has a lot to do with it.
As long as you get all that old semi gloss paint off the door first and you have a rough surface to apply the new paint you should be fine.
The end grain of window and door frames once exposed sucks up water like a sponge swells and further cracks the paint making the situation worse.
Just look at the same trim after one coat of the primer and zero scraping or sanding.
The larger the grit 40 or 60 grit max the more paint it will remove.
Paint adheres well to drywall.
Normally that is from 1.
Water sits in the corners is slow to dry and eventually breaks through the paint barrier.