Never paint over a vinyl wall without abrading it with sandpaper.
If you plan to paint over a vinyl wall, there are a pair of important factors you will need to consider before you get started. First, vinyl is a nonporous surface, and unlike wood and drywall, it is not conducive to paint adhesion. You will need to prepare your vinyl wall using abrasion techniques to promote adhesion. In addition, because vinyl is so slick, it causes paint to drip and sag. This is especially common on vertical surfaces like walls. You will need to use a specific application technique to prevent these mishaps, or you may end up with disappointing results.
Instructions
1. Open doors and windows to provide ventilation.
2. Cover flooring adjacent to the vinyl wall with fabric drop cloths.
3. Clean the vinyl wall by scrubbing it with dish soap using a coarse plastic brush. Rinse the wall thoroughly. Allow the vinyl to dry out completely.
4. Load a palm sander with 120-grit sandpaper. Scour the vinyl wall with sandpaper until it feels slightly rough to the touch.
5. Wipe away dust from the vinyl wall with a tack cloth.
6. Cover all areas of the vinyl wall you do not want coated in paint with painter's tape.
7. Apply a thin coat of primer to a three foot wide area of the vinyl wall using the roller. Smooth the primer using the paintbrush. Apply long, smooth, vertical strokes. Work quickly before the paint begins to dry. Repeat this step until the entire vinyl wall has been coated with primer.
8. Wash all painting tools with water.
9. Allow the primer to dry for two hours, and then apply a coat of interior acrylic latex paint to the vinyl wall using the same application technique from step nine. Allow the paint to dry for two hours, and then apply an additional coat if necessary.
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