How to waterproof a interior wall that is dry walled?


any suggestions for a wall covering that is completely waterproof - have cat rescue - they can spray the walls. have used vinyl flooring glued to a porch wall - works great, but is a big job to complete.

  6 answers
  • Dwp7470b Dwp7470b on Oct 28, 2018

    Flexseal or Polyurethane will work as a sealant.

  • William William on Oct 28, 2018

    Don't use Flex Seal. it breaks down over time and will peel in chunks. Three coats of a water based polyurethane would work. Just beyond the height of the spray. Vinyl wallpaper would work. Your flooring idea is great.

    • LINDA MONTER LINDA MONTER on Oct 28, 2018

      thanks for info - fyi - i used a wood floor like floating vinyl - that made the walls look like wood paneling - looks great and works great, but is a job that requires 2-3 people to work with the vinyl, one glueing. have to use a special glue from the flooring store. just wipes clean. trying to find an easier solution; that is easier for me to do at my age. if all else fails, will do the flooring vinyl again on the inside walls.

  • Lynn Sorrell Lynn Sorrell on Oct 28, 2018

    Staple heavy duty black landscaping plastic to it,cut the plastic long enuf to extend onto floor then outward about 6-12" it's relatively cheap and can be put up & replaced easily when it needs changed out . Make sure you overlap edges and then fold them over so it creates a sealed edge strip if you need to make it wider.Cover staples with piece of duct tape so if they pee on a staple it won't seep into the staple holes. Even if it's water proof it will eventually smell like urine so if you use this you can change it out frequently. I run a trap depot for TNR for Animal Defense League of Arizona teach people behaviour of house cats,strays & ferals. Buy commercial grade odor neutralizer from janitorial supply, it's expensive but works, the kind that's used to remove vomit,blood,dead smell,urine,feces.Put it on the wall before you put plastic up it will remove the scent already present.Use a black light to see where it is. It'll be florescent. Try to stay away from any cleaners with ammonia in it it only intensifies the ammonia in the urine.THX for helping animals

    • See 1 previous
    • Lynn Sorrell Lynn Sorrell on Oct 28, 2018

      Cat urine doesn't wash off anything. Even tho you cannot see or smell it the cats can so everytime you think you've cleaned it they(the same cats or new ones)will spray on it again to reinforce the diluted scent. "Stinkers" is one brand that works for odor neutralizer but it is hard to find it in the unmixed/undiluted form

  • Oliva Oliva on Oct 28, 2018

    Isn't is true that neutered cats are less likely to spray?

  • William William on Oct 28, 2018

    They make peel and stick vinyl floor planks that don't need glue. They have a very sticky adhesive on them already. Peel the paper backing off and stick it on. One person job.

  • Johnavallance82 Johnavallance82 on Sep 12, 2021

    Clear Vinyl Sheets, screwed to the walls.