It is critical to clean the walls thoroughly with a mixture of water and TSP (trisodium phosphate) to remove dust and grease; any residual dirt will prevent the primer from forming a proper bond. Inspect the wallpaper for any loose seams or hollow areas.
Conquering Water Rings, Smoke Stains, and Wallpaper with Oil Primer
Unlike water based options that can reactivate old adhesives or cause paper backing to swell, the oil variant dries hard and flexible, accommodating the slight movement of the old paper without cracking. Expect the primer to be dry to the touch in about 6 to 8 hours, but plan to wait a full 24 hours before applying the finish coat of paint.
If there are any protruding seams or bubbles where glue remains, those areas need to be scored and gently sanded down. Additionally, the rigidity of the oil finish creates a smooth, enamel-like surface that is highly resistant to scuffs and everyday wear, making it ideal for high-traffic areas such as hallways or living rooms.
Sealing Water Rings and Smoke Stains with Oil Primer on Wallpaper
Rushing this step can result in wrinkling or an uneven finish. This film is slightly porous yet incredibly strong, which allows it to grip the wallpaper while simultaneously sealing any stains.
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