Home>Discussions>PAINTING & FINISHING>Residue on Walls After Wallpaper Removal
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Jim
Residue on Walls After Wallpaper Removal

I recently removed wallpaper from our dining room.  All of the walls have a molted appearance due to a blue residue (the darker streaks in the attached file) remaining on areas of the walls.  I've removed plenty of wallpaper before and this doesn't look or feel like glue.  It comes off after a significant amount of rubbing with a rag and Goo Gone or Goof-Off, but that amount of work isn't feasible for a room this big.  I've also tried wallpaper paste remover and a vinegar/baking soda combination, but nothing seems to work even after upwards of 45 minutes of waiting.  What is this, does it need to be removed, or can I prime over it before painting?  Alternatly, could I seal it first with a product like Zinsser Gardz?

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Clarence
Re: Residue on Walls After Wallpaper Removal

 It maybe a bonding agent that was applied before the wall paper paste. What is the wall surface Plaster drywall / other ?

Jim
Re: Residue on Walls After Wallpaper Removal

I think this room is drywall (some rooms have rock lathe, but I haven't specifically checked the dining room yet).

Clarence
Re: Residue on Walls After Wallpaper Removal
Jim wrote:

I think this room is drywall (some rooms have rock lathe, but I haven't specifically checked the dining room yet).

Being it is Blue & you have some Rock Lath in the house i say it is Plaster-Weld bonding agent this company made two color bonding agents Pink & Blue. If you wet it with water does it become sticky ?

Jim
Re: Residue on Walls After Wallpaper Removal

It doesn't become sticky when wet or dry.  When running your fingers over the wall, you can detect a slight texture difference between areas with the material and bare paint, but otherwise it's almost part of the texture of the walls at this point.  It's so thin that it can't be scraped off (again wet or dry).  When you rub long enough with Goo Gone, when it finally does start to come off it's almost like tiny eraser particles on paper that can be wiped away, not peeled off or dissolved.

Clarence
Re: Residue on Walls After Wallpaper Removal

 It is a bonding agent i miss inform you it is Weld-Crete blue & yes tiny eraser partical indicate bonding agent you can skim coat over for a smooth finish.

Jim
Re: Residue on Walls After Wallpaper Removal

Clarence - thank you for the information!  Very helpful

ordjen
Re: Residue on Walls After Wallpaper Removal

There are many quick prep pre-wallpapering products on the market. They provide adhesion when going over slick, hard plaster, and sealing  of more porous drywall surfaces. They help assure that the wallpaper sticks initially, and years down the road, that you will can easily remove it. They often have a little color in them to aid in seeing that everything gets coated during the prep. The product I used alot, had a greenish look to it.

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