Step 6: Test for Trace Adhesive

checking for residual adhesive by spraying the wall with povidone iodine and water and wiping with a sponge
Photo: Ryan Benyi
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You can check for residual wallpaper adhesive by spraying the wall with a mix of 1 quart water and 1 ounce povidone-iodone, which will turn any adhesive residue purple. Use denatured alcohol or sand lightly to remove those spots. Let the walls dry for 24 hours, then seal them with an oil-based primer.
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    Tools List

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    • flathead screwdriver
      Screwdriver
    • Wallpaper scoring tool
      Wallpaper scoring tool
    • backpack pump sprayer
      Pump sprayer
    • Fine Brush
      Wallpaper brush
    • plastic putty knife
      Metal or plastic putty knife
    • small plastic bucket
      5-gallon bucket
    • long-handled sponge applicator
      Sponge mop
    • spray bottle
      Hand sprayer
    • grout sponge
      Sponge
    • sandpaper
      sandpaper (to dull the corners of the putty knife)

    Shopping List

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    1. Plastic sheeting

    2. 2-inch painter's tape

    3. Enzyme-based wallpaper-adhesive remover4. 10-percent solution of povidone-iodine

    5. denatured alcohol