Always follow the manufacturer's recommended recoat window, which is usually longer for primers applied over oil substrates. Oil and latex have different drying times and viscosities, so working in small sections is essential to prevent lap marks.
Latex Primer Over Oil Paint Strategies for Strong Adhesion
A standard latex primer might bond to lightly sanded oil, but a dedicated bonding primer is engineered to chemically grip the old finish. Latex paints, on the other hand, cure through water evaporation, forming a flexible film that relies on bonding to a porous surface.
Cleaning and Deglossing Begin by cleaning the surface with a degreaser to remove any dirt, grease, or airborne contaminants that could block adhesion. Recoat Times Patience is required regarding drying.
Using Latex Primer Over Oil for Maximum Bonding and Durability
The result is peeling and cracking, where the new paint simply slides off the old one. Latex paint dries to the touch quickly, but applying a second coat too soon can trap solvents that prevent proper bonding with the oil layer beneath.
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