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How do You Paint Over Wallpaper Glue?

Published in Wall Painting Preparation 4 mins read

Painting a wall that previously had wallpaper glue requires careful preparation to achieve a durable and attractive finish. The process involves several key steps to ensure the wall surface is clean, smooth, and properly sealed before applying paint.

Based on the provided reference, the method for painting over wallpaper glue involves the following sequence:

Preparing Walls That Had Wallpaper Glue for Painting

Painting over a surface that previously held wallpaper and its adhesive isn't about applying paint directly onto leftover glue residue. Instead, it's a process of preparing the wall after the wallpaper is removed to ensure the surface is suitable for paint.

Here are the essential steps you need to follow:

  1. Remove Dated Wallpaper: The first step to painting directly over wallpaper glue is to first remove the old wallpaper. This foundational step is crucial, as you cannot effectively prepare the wall surface or paint over intact wallpaper or large amounts of adhesive.
  2. Prepare The Area: Before tackling the glue or the wall itself, protect your workspace. This typically involves covering floors and furniture with drop cloths and potentially removing outlet covers and fixtures.
  3. Remove Excess Glue Residue & Apply Solution: After the wallpaper is off, significant glue residue often remains. This excess glue must be removed. This step often involves scraping and cleaning the wall surface. Applying a solution designed to help dissolve wallpaper paste can make this process easier. Ensure the wall is as free from sticky residue as possible.
  4. Sand Down The Wall: Once the glue residue is largely removed and the wall is dry, sand Down The Wall. Sanding helps to smooth out any remaining stubborn adhesive spots, rough patches, or minor imperfections left on the drywall or plaster surface. This creates a smoother base for painting.
  5. Repair Any Damage To Your Drywall: Removing wallpaper and glue can sometimes cause minor damage to the wall surface, such as nicks, dents, or tears in the paper face of the drywall. Before painting, repair Any Damage To Your Drywall using appropriate patching compounds. Allow repairs to dry thoroughly and sand smooth.
  6. Prime The Wall With An Oil-Based Primer: This is a critical step when dealing with walls that had wallpaper glue. Applying An Oil-Based Primer helps to seal any remaining glue residue (even trace amounts) and prevents it from reacting with water-based paints, which could lead to bubbling, peeling, or staining. An oil-based primer creates a barrier and provides a uniform surface for the paint.
  7. Paint Over Wallpaper Glue: After the oil-based primer has been applied and has cured according to the manufacturer's instructions, you can finally Paint Over Wallpaper Glue. At this point, the wall surface is properly prepared and sealed, ready to receive your chosen paint color.
Step Purpose Key Action
Remove Wallpaper Clear the wall surface Peel/scrape off old wallpaper
Prepare Area Protect surroundings Cover floors/furniture, remove fixtures
Remove Glue & Apply Solution Clean adhesive residue Scrape, wash, use glue remover
Sand Down Wall Smooth the surface Sand away residue and imperfections
Repair Damage Fix wall imperfections Patch holes/dents, sand smooth
Prime with Oil-Based Primer Seal residue, block stains, create uniform base Apply oil-based primer evenly
Paint Over Wallpaper Glue (Wall) Apply final color coat Apply chosen paint over the primed surface

By following these steps, particularly focusing on the thorough removal of glue and the application of a sealing primer, you can successfully paint a wall that previously had wallpaper and its associated adhesive.

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