But oil-based paint isn’t perfect.
The most significant issue with oil-based paint is that it’s becoming more and more difficult to find.
Using Latex Paint Over Oil-Based Paint
Latex paint can be successfully painted over fully-cured oil-based paint.
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Latex paint cures from the outside in.
It develops an outer skin and then slowly hardens inside due to evaporation.
But oil-based paint has no water; it does not evaporate.
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Rather, it chemically hardens.
There are two types of oil-based paints available:alkydand natural oil-based paints.
Alkyd is made with synthetic resin binders and natural oil is an old-school product made from linseed.
The Spruce / Sanja Kostic
Linseed oil paint was favored in old houses since it does not trap moisture which ruins wood.
you’re free to’t just paint directly over oil-based paint.
Glossy surfaces will not take a second layer of paint well on their own.
The Spruce / Sanja Kostic
They need proper cleaning and priming.
it’s possible for you to achieve that with the following steps.
Need more help?
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If fine-grit sandpaper isn’t working well, switch to gentle scuffing with medium-grit sandpaper.
A power sander may apply too much pressure on the surfaces.
Remove Chips
Pry off any loose paint from the surface with a five-in-one tool orputty knife.
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Just remove areas of failing paint.
Solid paint can remain.
Fill in Small Gaps and Holes
Fill small gaps and holes withwood putty or wood filler.
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Let the filler dry completely, then lightly sand the filled areas with fine-grit sandpaper.
Its sticky surface takes up stray dust particles.
Mix 1/4 cup to 1/2 cup (for extra dirty surfaces) TSP with a gallon of hot water.
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Use a sponge that’s damp with the TSP solution to wash the surfaces.
Wash surfaces from the bottom up to reduce streaking.
Let the surface thoroughly air-dry.
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It also acts as a de-glosser.
This is essential as it provides the latex paint with a porous surface to help it stick.
Brush the primer onto the surface.
Brush one coat but preferably two coats of primer on the surface.
Let it dry thoroughly.
Paint the Surface
After theprimeris dry, you’re ready to paint.
Paint as you normally would, using two coats if necessary.
Let the paint dry for at least two hours between applications.
Draw the paint in slow, even strokes, always maintaining a wet edge.
you could use a latex primer over oil-based paint as long as it is a bonding primer.
Bonding primers are best because they are formulated to adhere to glossy surfaces, such as oil-based painted finishes.
It takes about seven days for an oil-based painted finish to fully cure or harden.
Use one to two coats of bonding primer over oil-based paint.
Read the primer product’s label for specific instructions and drying times between coats.
Volatile organic compounds (VOCs).
Minnesota Pollution Control Agency.
Crystal Tack Cloth Premium Grade.
Safety Data Sheet - TSP Trisodium Phosphate.
Flood Clean-Up: Questions about Cleaning Products.
University of Illinois Extension.
