When applying the topcoat, use a high-quality synthetic brush for trim and a microfiber roller for larger surfaces to achieve an even finish without disturbing the underlying layers. Because oil creates a non-porous, slick surface, latex struggles to bond to it without the proper preparation.
Achieving Strong Adhesion: Latex Paint Bonding to Oil Surfaces Properly
You should look for a product specifically labeled as a "bonding primer" or one designed to block stains and adhere to glossy surfaces. After sanding, a thorough cleaning with a degreaser is necessary to remove sanding dust and residual oils that could block adhesion.
These issues usually manifest months after the job is complete, turning a simple refresh into a full-scale repaint that wastes time and money. The Risks of Skipping Preparation Skipping the necessary steps to bond the two different materials can lead to immediate or eventual failure of the new finish.
Ensuring Latex Paint Sticks to Oil Surfaces Properly
The most effective method is to lightly sand the surface. Topcoat Selection and Application Once the primer is dry, you are technically ready to apply the latex paint.
More About Can you paint latex paint over oil paint
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