Best Overall
Ghostshield Lithi-Tek Concrete Sealer
By combining a densifier and waterproofer in one product, Ghostshield Lithi-Tek Concrete Sealer penetrates and hardens while providing a surface barrier against moisture, making it our best basement sealer overall. The lithium (hence the “Lithi”) silicate has a smaller particle size than alternatives like sodium or potassium silicate, allowing it to penetrate deeper into the concrete.
This basement sealer might seem expensive compared to other gallon-sized products, but since it’s a concentrate, it actually covers up to 1,000 square feet when mixed with four gallons of water. It’s also mildew-resistant and cleans easily with just soap and water, which helps eliminate basement odors and smells.
Pros
- Exceptional value
- Resists water and moisture intrusion
- Can be used on new concrete
- Suitable for interior or exterior surfaces
Cons
- Not for cinderblock or pavers
Article source here: The 5 Best Basement Sealers to Waterproof Your Space
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