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
See allExcellent sealing & salt-blocking performanceEfflorescence ResistanceAlkali Resistance
Surface 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
Available Packs
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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