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Mold Killing Half Pallet Interior/Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 5-gallon )

Ratings & Reviews for Zinsser Mold Killing Half Pallet Interior/Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 5-gallon )

4.6
301
Review
 4.6 out of 5
302 Reviews


94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this mold-killing primer for its exceptional effectiveness, with most reporting visible mold elimination after a single coat that doesn't return—even in bathrooms and basements. Reviewers highlight smooth application, quick drying, and excellent coverage that often eliminates the need for multiple topcoats. Many note improved mold allergies and appreciate that it works directly over existing mold without complete removal first. While the odor is noticeable, most find it tolerable compared to harsh alternatives. A few mention adhesion issues on certain surfaces or wish for smaller sizes, but overall customers consider it a reliable, time-saving solution.

Customer review summary generated by AI, including incentivized reviews.
302 Customer Reviews

Good quality primer

Would Recommend

Thick paint only needs one coat, it dries fast allowing top coat on same day. Unable to provide opinion as to mold killing performance as it's not been long enough since applying. I like the plastic can and lid, it will not rust.

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Cost

Would Recommend

Did its job. Cost is to high

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Really works!!!!

Would Recommend
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Covers and stops mold as advertised.

Would Recommend

Easy to apply and covers well.

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Great mold killing paint

Would Recommend

The zinsser line of mold killing paint and primer is key to killing mold and mildew on many surfaces. It also can stop the chalky layer that occurs on older paint that is oxidizing and bind it to the surface.

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Can leaked

Would Not Recommend

I will be speaking to the store about this. The can of primer leaked inside the box and what is left in the can appears to be solid.

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Response from Rust-OleumSupport

Dave, for issues with your Lowe’s order experience of Rust-Oleum Zinsser Mold Killing Primer leaking on arrival, please contact the Lowe’s customer s...

Rust-OleumSupportJuly 11, 2025

Rustoleum

It works I was impressed

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Covered well

Would Recommend

I cleaned first, then used this. It seemed to cover everything. Only time will tell how affected it is long term.

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Primer was like cottage cheese

Would Not Recommend

I opened the can to stit it and the primer had the consistency of cottage cheese and started clumped together after mixing for 5 minutes.

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Response from Rust-OleumSupport

Oh no, Heather, something seems wrong here. We would love to hear more about your experience with Rust-Oleum Zinsser Mold Killing Primer. Can you ple...

Rust-OleumSupportJuly 3, 2025

Rustoleum

the best

Would Recommend
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Great product for use in high moisture areas

Would Not Recommend

I used this in my main bathroom above the tub enclosure on the drywall. I had issues with mold that would not clean off even with bleach. I tried pretty much every household cleaner and vinegar but it would never get all of it off and it returned within days. I prepped the area by cleaning with TSP and put 2 coats on. It has been a month and it has not returned.

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Perfect Primer

Would Recommend

Good coverage and no odor

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Excellent Water-based Primer

Would Recommend

I used this Zinsser Mold Killing Primer to remove the smell of mildew from an indoor/ outdoor storage closet attached to my home. I was impressed by how well the primer absorbed into the plywood, killing the mildew. It seems very effective on porous surfaces. I recommend two coats using a 1/2" nap roller and soft large brush to get into the crevices of rough plywood. I especially appreciated the primer's neutral smell. Its water-based formula made working in a tight space much easier than oil ...

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