Kilz Pet Urine Subfloor

When we were building our house, we thought it would be a great idea to put white berber carpet in. What a stupid idea that was. So, after 8 years, and a few Lucy the “puddle” dog accidents, we had to deal with treating the sub floor before we could lay down the new carpet.

Okay, so I know this little “how to” isn’t for everyone, but there HAS to be some of you out there who are in the same boat, so I thought I would share. We recently had our carpets replaced.

Kilz was recommended by our flooring contractor {make sure to get the oil-based version}. So, that is what we went with.

Get a shop vac and clear out any dust, sand, etc. The sub floor should be smooth. Then, put on a mask of some sort, because this stuff has a pretty strong odor. I used one thick coat of Kilz on both the sub floor and the cement.

To use it, first you have to rip up all of the carpet. Try not to beat yourself up when you see what’s underneath. It’s gross. It will make you feel like a dirty person–even if you have vacuumed religiously.

How to Use Kilz Paint to Eliminate Cat Urine Smell?

Well, I will not guarantee whether using the paint will help you get rid of the smell or not.

Because it may depend on several factors like what cat you own, how strong the urine smell, what other ways you have tried out, etc

I will tell you here exactly about the steps I followed and how they helped me…

As the very first step, I removed the stinking carpet from the wooden floors.

Washed it well using a diluted shampoo and warm water; I left it outside in the backyard for drying.

After the carpet was removed, there were a few nails that needed to be fixed.

I fixed them by nailing them down and filling a few holes with a nail hole filler (Minwax Wood Putty).

Then I quickly vacuumed the subfloor and made it dirt-free.

I also cleaned the floor with some vinegar and water to remove the dark spots and stunk.

After getting everything cleaned up, it was time to primer the timber.

I chose Kilz Original Interior Primer, that’s specially designed for blocking heavy stains and odors like pets.

Using a roller, I applied the first coat of thinned oil-based primer-sealer.

And then, after about 5-6 hours of drying, apply another coat of this stain blocker.

After the primer was dried, its time to apply the paint.

Since we already applied the stain and odor-blocking primer-sealer, using any premium quality interior oil-based paint can work.

I decided to put Kilz paint (you can choose any other if you want).

Applied two coats of this oil-based paint on the timber floor just as I applied the primer (using a roller) and left about 6-8 hours of drying time between the two coats.

After about 24 hours, the paint was dry, and all the cat urine subfloor was already covered with Kilz Original primer paint.

I put back the carpet after three days (after making sure the paint does not stick). And made the room ready for use.

The only problem I faced during the process was with the oil-based paint, which had a strong smell.

This is obvious with just any oil-based paint.

So, you cannot do anything about it other than leave your room open and well-ventilated for about 36-48 hours.

Ventilating the area (by opening all the doors or windows open) is an important step, or you will end up breathing all the hazardous fumes that can be dangerous.

Other than this, the whole process was pretty simple, and it went fairly well.

Well, it was hard to tell the difference paint made for a few days.

It was typically due to the powerful smell of paint itself, which lasted for about a week.

After a week, we realized that the bad cat smell was nearly eliminated.

Although it was slightly present in a few spots, most of it was gone away automatically after a couple of days.

Thanks to Kilz Original Primers and Paints, which has done the job fairly well.

In fact, it exceeded our expectations and left us home with a fresh smell that was free from cat urine.

Does Kilz Paint Cover Cat Urine Odors?

I hadn’t believed in any cat urine odor-blocking paints until I tried the Kilz paint and primer myself.

I was aware that KILZ paints and primers come with the ability to tackle tough stains like rust, grease, water damage, ink, pet stains, etc.

But it can also cover the stinking cat pee – I never believed!

To my surprise, when I tried Kilz Original primer paint, I noticed it worked in blocking the cat pee smell very well.

Plus, this powerful stain-blocking formula has done the job faster than I expected.

That’s the reason I think it’s the best KILZ brand to use on the sub-floor for blocking pet odor.


Will KILZ cover pet urine smell?

KILZ RESTORATION Primer also seals persistent pet, food and smoke odors. Use on interior surfaces including drywall, woodwork, plaster, masonry, brick, painted metal, ceramic tile, glass and most other glossy surfaces.

How do you get dog urine smell out of subfloor?

Spray 3 percent hydrogen peroxide on the spot and let sit for a few minutes. Blot dry with a clean cloth. For a stronger solution, mix 3 percent hydrogen peroxide with a squirt of dish soap and a sprinkle of baking soda.

Does KILZ block dog urine?


Kilz is a sealant. Priming the affected surface helps block and seal the odors, preventing them from seeping out. Additionally, the odor-sealing properties in primer help provide a barrier so odor molecules can’t penetrate. KILZ is a great solution for medium to severe odors, including those from pets.

Will KILZ seal cat urine?

Replacing the carpet

Norris recommends painting over the cat pee stains with a primer like KILZ that helps seal in odors.

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