HAUPTMANN A4 FLOORING

COATING STRUCTURE

1. Concrete base; 

2. Primer: Hauptmann Epo 420 

3. Base coat: Hauptmann Epo Farbig/Epo 320 + colored sand 0.4 - 0.8 mm

4. Finishing coat: Hauptmann Epo 420

BASE

The base should be load-bearing, durable and resistant to deformation, free of separating particles, dust, oils, grease, products of rubber wear and other substances that prevent adhesion. Tensile strength of the base surface should be on average 1.5 N/mm2, compressive strength - not less than 25 N/mm2. Surfaces should have an equilibrium moisture content:

• concrete, maximum 4% by weight 
• cement screed, maximum 4% by weight.

Before application on ceramic coatings, old coatings, levelling substances, and poured asphalt indoors, materials should be tested for compatibility with each other, if necessary, apply a test coating.

BASE PREPARATION

Bases should be suitably prepared to meet all of the above requirements, e.g. by shot blasting or diamond grinding. Chips and damaged areas of the base should be repaired with Hauptmann Epo 320

APPLICATION EXAMPLES

Priming: 

 Apply Hauptmann Epo 420 product as a primer with a rubber wiper and roll with an epoxy roller until an even surface is obtained. Product consumption is 0.2-0.4 kg/m2 depending on the surface. 

Base coat: 

 Spread Hauptmann Epo Farbig/Epo 320 product over the surface with a toothed paint scraper at a rate of 0.6-2 kg/m2. After the base coat is laid, without waiting for drying, add 0.4-0.8 mm fraction sand on the surface until fully saturated. After the resin has cured, remove loose sand with brushes or vacuum cleaner. 

Finishing coat: 

 Hauptmann Epo 420 product is applied with a rubber wiper or iron paint scraper depending on the specified roughness, the resulting coating is smoothed with an epoxy roller. Product consumption is 0.6-0.9 kg/m2. All the above technical data were obtained when testing the product under laboratory conditions (+20°C). Minor deviations from the values can occur during product processing at the facility. Minor variations in the color of quartz sand from different batches are possible. Product from the same batch should be processed on adjacent surfaces. Under the influence of ultraviolet radiation and atmospheric loads the color of epoxy coating may change. 

Colorfastness of the coating can be improved by applying a protective UV-absorbing polyurethane-based sealing coating.

Characteristics