This mechanical action scratches the glossy finish, creating a texture that allows the new latex to grip. Applying a fresh coat of color over an existing finish is one of the most common questions that arises during a painting project.
Latex Over Oil Paint Preparation Steps
Conversely, latex paint is water-based; it dries as the water evaporates, leaving behind a flexible plastic film. This primer chemically reacts with the old oil layer and mechanically locks into the sanded texture, creating a stable base for the latex paint to cling to.
If the paint does not adhere correctly, you risk peeling, flaking, and blistering. You should look for a product specifically labeled as a "bonding primer" or one designed to block stains and adhere to glossy surfaces.
Latex Over Oil Paint Preparation Steps
These issues usually manifest months after the job is complete, turning a simple refresh into a full-scale repaint that wastes time and money. Because oil creates a non-porous, slick surface, latex struggles to bond to it without the proper preparation.
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