Thoroseal® 550i is a ready-to-use

polymer-modified cement-based

coating. It is used to waterproof

and protect concrete, mortar, and

masonry surfaces requiring either

positive- or negative-side

waterproofing. Thoroseal® 550i can be

applied by low-pressure spraying or

hand troweling

• Flexible: Accommodates thermal movements and vibrations

• Resists negative and positive hydrostatic pressure. Can be used to waterproof below grade

• Excellent resistance to de-icing salts. Ideal for cold, wet environments

• Protects against carbonation and pollutants. Lengthens the service life of structures

• Prepackaged units: Easy mixing and application

• Low permeability: Resists moisture and chloride intrusion

• Attractive appearance: Can be used as a decorative coating

• Sprayable: Reduces labor requirements

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