Stripping peeling paint off of varnish
#1
04-14-14, 05:30 PM
Stripping peeling paint off of varnish
i have been removing two layers of paint from all the trim and doors that is lightly adheared and peeling from varnish for a month now with a bosh hot air gun and have atleast another month to go. we have been using 60 grit with an orbital, vibrating and hand sander to cut down on the varnish gumming but of course it sill gums. we are basicly down to the wood and i don't want to sand anymore. if i paint heavy enough will it cover the sanding marks. all doors will be painted off the hinges.
#2
04-14-14, 07:51 PM
Banned. Rule And/Or Policy Violation
I would have been using a stripper like Peel Away and scrapping it off.
Paint does not fix flaws!
Paint does not fix flaws!
#3
04-15-14, 12:43 AM
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Most likely the previous painter did not sand the varnish (more likely polyurathane) It would of needed a coat of general purpose oil base undercoat. That's why it's coming off. Sanding with 60 grit is just too abrasive. Joecaption has the right idea, paint stripper! Much easier and faster. Good luck Uhjohnson.
Rick
Rick
#4
04-15-14, 03:50 AM
Dependent on the age of the house and who originally finished the woodwork it could be varnish, poly or shellac. Polyurethane has the hardest finish of the three.
Is the varnish gumming up the sandpaper or is it the latex paint plugging up the sandpaper? As stated above - using a stripper will speed up the job. You'll still need to do some sanding but not as much.
Once you've removed all the failing paint, sand with 120 grit to remove most of the sanding scratches, sand again [150-180 grit] after you've primed the wood and between coats of enamel. That should eliminate all the sanding scratches and minimize [maybe eliminate] any brush marks.
Is the varnish gumming up the sandpaper or is it the latex paint plugging up the sandpaper? As stated above - using a stripper will speed up the job. You'll still need to do some sanding but not as much.
Once you've removed all the failing paint, sand with 120 grit to remove most of the sanding scratches, sand again [150-180 grit] after you've primed the wood and between coats of enamel. That should eliminate all the sanding scratches and minimize [maybe eliminate] any brush marks.
