Latex Paint Over Oil Based Primer Exterior

You will now be able to add the bonding primer.

Latex paint over oil based primer exterior.

Two coats of a high quality water based latex or acrylic paint e g. Primers of either base can be top coated with either latex or oil. Latex will not properly stick when applied directly on top of an oil based layer without preparation and may easily crack or peel. However don t apply an oil based paint over latex.

Double check your primer label. Just taking a quick glance at the picture for this blog post will give you an idea of what will happen every single time you do. One question however is can you use latex paint over oil based primer. Oil based primers take at least eight hours to dry.

Interestingly though on the other hand you can t use oil based paints over latex paint. Oil based paint is still available in quart sizes or smaller. Latex paint can also be called acrylic paint. Why oil paints don t mix furthermore if you were to use an oil paint over latex the new paint will expand and contract at a different rate than the underlying layer causing it to crack.

How to paint latex over oil based paint okay so in my previous post how to test for oil based paint i showed you how to determine if you have oil based trim in your house. What doesn t work is an oil based topcoat brittle film over a latex topcoat softer flexible film. Which brings me back to my own badly peeling latex paint. And newer houses might have some areas of oil based paint since it is not entirely banned.

We have solved the rules for painting over oil based paint. If you have determined the existing paint is oil based you will need to rough the surface using 100 grit sandpaper until the gloss has vanished then wash the surface and allow it to dry. It is okay to use latex paint over oil based. This may sound even more confusing so to help you understand better here is a thorough.

However at the same time it is also said that it is perfectly okay to use latex paint over an oil based primer. Now that it s been determined that the trim was painted in oil there are a couple ways to go about painting latex over it. Interior exterior hold up better to rot. But latex paint over oil based primer works perfectly.

It is a commonly held belief that oil based paints don t mix well with other types of paints. Using latex over oil based paint has generally been seen as a no no and for good reason. If you are going to use latex paint over an oil based primer ensure that you prepare the surface properly. An oil based primer is a good undercoat for exterior or baths due to its greater degree of waterproofing.

If a house is old enough it is inevitable that it will have oil based paint somewhere since water based latex paint wasn t introduced until the 1940s. Yes i know it is confusing. Placing latex over the oil primer.