Wipe down the area with a tack cloth to remove all dust and sanding residue. Oil-based paints cure into a smooth, almost plastic-like surface that lacks the tooth or texture necessary for new paint to grip effectively.
Latex Paint Over Oil Surface Roughening and Preparation Steps
This mismatch can create stress within the layers, causing cracks to appear as the underlying film moves. Multiple coats of a quality primer will reduce the number of topcoats needed, saving time and material costs in the long run.
A standard all-purpose primer will likely fail, as it does not address the specific need to block solvents and provide a grippy surface. The Role of Primers in the Process Choosing the right primer is the most critical decision when transitioning between these two paint chemistries.
Latex Paint Over Oil Surface Roughening for Optimal Adhesion
You require a shellac-based primer or a high-adhesion bonding primer. Lightly sand the surface with fine-grit sandpaper to break the gloss and create texture.
More About Latex paint over oil based paint
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