- Calculate the wall space to be covered in square feet. Measure a wall from ceiling to floor and horizontally from corner to corner. Multiply those two figures. Repeat for remaining walls. Add the totals.
- If you are covering a ceiling, calculate the square footage by multiplying the width of the floor by the length.
- Divide each figure by 25 -- the average square footage in a standard single roll of wallpaper.
- Subtract from the total one-half single roll for each window and door. The resulting figure is the final number of single rolls needed. Always round fractions to the next highest whole number. If your wallpaper comes in double rolls (most residential wallpapers do), divide this figure by 2.
Resetting a peeling wallpaper
Apply new adhesive
- Moisten the peeling or damaged portion of the seam. Then carefully lift up the loose section of wallpaper and, using a small brush, apply a thin, even coating of wallpaper glue or adhesive to the underside of the piece you wish to reattach.
- Press the piece of wallpaper back into place. Clean off any areas of excess adhesive with a sponge or damp cloth. Make sure not to soak the wallpaper too much or you run the risk of loosening the adhesive you’ve just applied. Let the wallpaper dry and you are done!
Reseat the wallpaper seam
How To Clean Walls
- Use WD-40 to remove crayon marks. Spray a washcloth with the solution, and gently wipe the stains until they disappear.
- Apply talcum powder to remove grease spots on Wallpaper . Pour talcum powder on a washcloth. Rub the cloth on the wallpaper and let the powder sit for 10 minutes. Remove the powder from the wall with a dry sponge or brush.
- Remove dust. Use dry methods to remove dust from the wallpaper, such as a dry sponge or electrostatic dust cloth.
- Rub fingerprints away with a piece of bread. The gluten in the bread removes stains from the wallpaper.