Ratings & Reviews for Zinsser Mold Blocking Interior/Exterior Multi-purpose Oil-based Wall and Ceiling Primer ( Spray can )
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this primer for its exceptional mold-killing and prevention abilities, with most reporting no mold return for weeks or months even in damp bathrooms and basements. Reviewers consistently highlight superior coverage, noting one coat conceals mold stains and water damage effectively. Many commend the smooth application, quick drying, low odor, and ease of cleanup. Customers appreciate its dual function as both mold killer and base coat, eliminating separate primer purchases. A few mention minor issues like spray nozzle concerns, but overall satisfaction remains exceptionally high.
Customer review summary generated by AI, including incentivized reviews.It covered the stain in my pantry ceiling!
Would RecommendIt worked for the problem I had, but the odor was very strong. And I was glad it came in white, which made the choice to purchase easier.
Verified Purchaser
Great Product for covering mold
Would Recommendcovers great and quick dry
Verified Purchaser
Works
Would RecommendProduct worked as described, a little pricey but overall an easy fix
Verified Purchaser
Actually works
Would RecommendWorks well
Verified Purchaser
Work as promised
Would RecommendWork as promised
Verified Purchaser
Covers great
Would RecommendWorks great
Verified Purchaser
Quick and Easy
Would RecommendWorks great!
Verified Purchaser
easy to use
Would RecommendEasy to use and works as advertised
Verified Purchaser
Smell was a bit strong though
Would RecommendEasy to use, good coverage
Verified Purchaser
Easy to use
Would RecommendCovered water leak by my skylight so well you can't tell it was even there
Verified Purchaser
Crazy effective
Would RecommendIt's actually crazy how well this works. A potential buyer mentioned that they thought they saw mold in my property, so I wanted to treat it (I wasn't even thinking about paint; I just wanted to treat the area). I didn't realize that this would have a color to it (I'm not the sharpest tool in the shed and thought the primer would go on clear! Haha), but after I scraped off all the discoloration, I sprayed this on top, walked away to let the area fan out and came back. I couldn't even remember wh...
Verified Pro
It’s white
Covers the spot
Verified Purchaser
easy to apply.
so far, so good. hasn’t been on long enough to fairly evaluate.
Verified Purchaser
It’s so quick and easy to cove and kill mold
Would RecommendLove how this controls mold YeeHah
Verified Purchaser
Good product
Would RecommendThis product was a good price and easy to apply to needed areas
Verified Purchaser