Sika Astar | MCT CHEMICALS | SIKA PAKISTAN

DESCRIPTION
Sika® Astar is a single-component, versatile acrylic copolymer-based dispersion used as a primer and sealer for concrete or mortar surfaces before applying underlayment mortars. It is suitable for use in hot and tropical climates.

USES
Sika® Astar should be applied only by skilled professionals. It is used for:

• Reducing absorbency and enhancing adhesion on smooth, stable surfaces.
• Priming for ceramic and tile adhesives.
• Protecting the substrate from moisture before applying leveling compounds.
• Preparing surfaces for the Sikafloor® Level cementitious underlayment range.
• Priming mortar applications on cement plates, gypsum, and concrete boards.

CHARACTERISTICS / ADVANTAGES

• Efficiently seals concrete surfaces in a single, cost-effective application.
• Prevents water loss into the substrate, reducing the risk of bubble formation in the leveling material.
• Odorless and enhances adhesion on smooth, sound substrates.
• Ideal for both internal and external applications, including wet areas.
• Low consumption with high coverage.
• Compatible with many substrates.
• Easy to apply and comes in a colored form.

SUSTAINABILITY
Sika® Astar is certified as a “Low Emitting Material” according to the Al Sa’fat – Dubai Green Building Evaluation System by the Dubai Central Laboratory (DCL), Certificate No. CL17020432.

PRODUCT INFORMATION

• Composition: Water-based acrylic co-polymer dispersion
• Packaging: 20 L cans, 200 L drums
• Appearance / Colour: Pink liquid
• Shelf Life: 12 months from production date
• Storage Conditions: Store in a cool, dry place in unopened, undamaged packaging at temperatures between +5°C and +35°C, protected from sunlight, heat, and moisture
• Density: ~1.02 kg/l (25°C)

APPLICATION INFORMATION

• Consumption: 0.1 – 0.2 kg/m², depending on the surface’s absorbency. Some surfaces may require more material due to porosity, profile, or level variations.
• Ambient Air Temperature: +10°C min. / +35°C max.
• Relative Air Humidity: Max. 75%
• Substrate Temperature: +10°C min. / +35°C max.
• Ready for Use: Ready to overcoat after 4 to 8 hours, depending on weather conditions.