High-Adhesion Acrylic Primer
High-Adhesion Acrylic Primer
Rapid Set® ACRYLIC PRIMER is a concentrated acrylic primer that improves the adhesion of Rapid Set self-leveling flooring products to prepared concrete. ACRYLIC PRIMER acts to prevent pinholes from forming on the finished surface.
SURFACE PREPARATION: ACRYLIC PRIMER is intended for use on prepared concrete. The surface must be dry, porous, clean, sound, and free of oil, curing compounds, dust,
mastic, and other bond breakers. Mechanically profile the surface by shot blasting or grinding. Acid etching of the concrete surface is not recommended.
MIXING & APPLICATION: Shake well to ensure there is no sediment in the container bottom and to thoroughly mix the primer. Mix with water at low speed using a drill and paint mixer in a clean container. For normal concrete, mix at a ratio of 1 part primer to 1 part water. Excessively absorbent concrete surfaces require multiple coats with the first coat mixed at 1 part primer to 3 parts water.
Additional coats must be mixed at 1 part primer to 1 part water. Allow each coat to dry and become tack free. Repeat as necessary until the final coat of primer stays wet for at least 20 minutes. Lower temperatures and/or higher humidity will extend drying time. Apply primer to substrate and work into the concrete surface with a soft-bristle push broom. Paint roller or spray application will not achieve sufficient coverage. Spread evenly to avoid puddles and to thoroughly coat the surface. Maintain material, surface, and ambient temperatures above 50°F (10°C).
Apply Rapid Set self-leveling flooring products when the primer is thoroughly dry. If more than 24 hours have elapsed, reapply the primer.
Acrylic Primer Q and A:
What is Rapid Set Acrylic Primer and what can it be used for?
Rapid Set Acrylic Primer is a concentrated primer that improves the adhesion of self-leveling products to the concrete substrate and acts to seal porous concrete to prevent pinholes and bubbles from forming on the finished surface.
How do I prepare the substrate before applying the Acrylic Primer?
Mechanically prepare the substrate by shot-blasting and diamond grinding to achieve ICRI Concrete Surface Profile (CSP) 3. The substrate must be clean, sound, have an absorbent surface, and be free of oil, concrete sealers, or any other material that may inhibit bond. Remove all shot, dirt, and other debris. Acid etching the surface is not recommended.
Do I need to dilute Acrylic Primer?
Yes. In most cases, dilute with 1 part water to 1 part primer. For excessively porous or absorbent concrete surfaces, multiple coats may be necessary. Dilute the first coat with three parts water to 1 part primer. Additional coats should be diluted from 1 part water to 1 part primer.
How many coats are required?
The number of coats depends on the porosity and absorption of the substrate. If the primer dries in less than 20 minutes, the substrate is excessively porous and will require an additional coat. Additional coats may be added as soon as the previous coat is dry. Add additional coats until the primer stays wet for at least 20 minutes.
How do I apply the Acrylic Primer?
Apply primer to the substrate and work into the surface with a soft-bristle push broom. Spread evenly to coat the surface and avoid puddling thoroughly. A paint roller or spray application is not recommended as this may not sufficiently cover the surface.
How soon can I apply the Rapid Set products over Acrylic Primer?
Cementitious products can be applied when the primer is thoroughly dry and tack-free. If more than 24 hours have elapsed, reapply the primer. Can or should I use Acrylic Primer with other Rapid Set products like Cement All or Mortar Mix?
Acrylic Primer is compatible with many Rapid Set cement-based mortars and concrete. However, it is rarely required with products outside the Self-Leveling product lines when the substrate is adequately prepared.
What is the coverage of Acrylic Primer?
After proper dilution, one gallon of concentrated Acrylic Primer will typically cover about 400 ft to 600 ft.
What is the shelf life of Acrylic Primer?
Acrylic Primer has a shelf life of 2 years from the date of manufacture if never frozen and when appropriately stored in a dry location, protected from moisture, out of direct sunlight, and in an entire package.
What is the difference between Acrylic Primer and TXP Fast?
Acrylic Primer is an acrylic-based product. The TXP line of primers is epoxy-based. Some TXP products suit concrete with higher moisture vapor levels or relative humidity.