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Berger Alkali Sealer
Provides an effective seal and barrier coat to prevent the reaction of alkali salts with paints subsequently applied.
For new or previously painted masonry surfaces as brickwork, concrete, cement and rendering. Berger Alkali Sealer is also used to bind loose chalky surfaces in order to provide a sound surface for application of topcoats. Berger Alkali Sealer is recommended as a seal for areas where soil moisture moves upwards into walls and form salt deposits which damages the paint film known as efflorescence.
Features
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Excellent sealing & salt-blocking performance
Efflorescence ResistanceAlkali ResistanceSurface preparation:
- Concrete and cement surfaces must be completely dry
- The sealer will NOT prevent blistering of top coats if moisture is present in the surface
- Once surface is dry, remove any peeling paint with a scraper and any white powder with a dry cloth
Application Procedure:
- Ensure that the concrete has been cured for at least 30 days
- Remove all efflorescence, other surface contaminants and loose material
- Wire brush (hand or power tool), dry abrasive blast or wash with high-pressure water jet
- Check moisture content of concrete with standard moisture meter
- Proceed if moisture content is <10%
- If >10% find and resolve moisture source before applying Alkali Sealer
Tips: Always remove efflorescence from surface before painting. Failure to do so will result in a poor, friable base, preventing sound adhesion of topcoats.
Tools you will need
Paint Brush
Available Packs
1 Gallon
1 Coat
10.0 m2/Ltr**
Coverage
On well-prepared surfaces, as per the painting system recommended. Please refer to the Product Data Sheet for surface preparation and method of application.
** Actual coverage may vary from the quoted coverage due to factors such as method and condition of application, surface roughness, and porosity.
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