
Ratings & Reviews for Zinsser Mold Killing Half Pallet Interior/Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 5-gallon )
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.Good quality primer
Would RecommendThick 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.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Cost
Would RecommendDid its job. Cost is to high
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Really works!!!!
Would RecommendFrom Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Covers and stops mold as advertised.
Would RecommendEasy to apply and covers well.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Great mold killing paint
Would RecommendThe 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.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Lowe's Loop
Can leaked
Would Not RecommendI 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.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
It works I was impressed
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Covered well
Would RecommendI cleaned first, then used this. It seemed to cover everything. Only time will tell how affected it is long term.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Primer was like cottage cheese
Would Not RecommendI opened the can to stit it and the primer had the consistency of cottage cheese and started clumped together after mixing for 5 minutes.
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon )
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...

the best
Would RecommendFrom Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Great product for use in high moisture areas
Would Not RecommendI 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.
Perfect Primer
Would RecommendGood coverage and no odor
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Verified Purchaser
Excellent Water-based Primer
Would RecommendI 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 ...
From Mold Killing Interior_SLASH_Exterior Multi-purpose Water-based Wall and Ceiling Primer ( 1-gallon ) Lowe's Loop
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...