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KILZ Interior/Exterior Basement and Masonry Waterproofing Paint, White, 1-gallon

TLDR Review: KILZ Waterproofing Paint, 1-gallon

By ShopSavvy Team

Published: March 17th, 2026

Pros

•Provides excellent coverage, often requiring only one or two coats for a smooth, professional finish.
•Applies easily with a brush or roller, going on thick without being drippy or hard to manage.
•Effectively seals concrete blocks and adheres well even on surfaces with previous water damage or mineral buildup.
•Bright white color reflects natural light nicely, making basement or masonry areas feel brighter and more livable.
•Cleans up easily with water before it dries, and remains easy to maintain afterward.
•Offers strong sealing performance and durability according to early user experiences.
•Good quality for a budgeriendly waterproofing paint option.
•Penetrates crevices and damaged spots thoroughly, covering exterior and interior masonry well.

Cons

•Paint can feel thin when poured, so multiple coats may be necessary to fully eliminate streaks or minor unevenness.
•Some users noted minor scuff marks or wear over time, often related to inadequate surface prep rather than paint quality itself.
•Waterproof effectiveness is promising but not yet fully proven in lonerm wet conditions based on current feedback.

Bottom Line

If you're tackling basement or masonry waterproofing on a budget but still want solid coverage, durability, and a bright white finish, *KILZ Interior/Exterior Basement and Masonry Waterproofing Paint* is a strong contender. It's easy to apply and seals well, though for best results plan on two coats and proper surface prep. For those seeking a paint specially formulated for extreme water intrusion with more proven longevity, exploring dedicated waterproofing sealants might be worth your time.

Lowest at Amazon

$35.00 at Amazon

Lowest at any Popular Retailer

$32.52 at Walmart

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 8 retailers to give you the short version.