Mapei Mapecoat TNS Primer EPW is a solvent-free, two-component epoxy primer in water dispersion for compatible acrylic and polyurethane resin coatings, including products in the Mapecoat TNS range. It promotes adhesion on prepared cementitious surfaces, worn asphalt, existing resin, PVC, linoleum and suitable prefabricated rubber mats. Cementitious substrates may have up to 3% residual humidity, but must not be subject to rising damp.
Mix the complete 10 kg kit at A:B 1:4, then dilute the mixed product with water at 1:0.5 as directed in the TDS. Apply evenly by roller, spray or rubber squeegee; consumption is approximately 0.1–0.2 kg/m² of diluted product on a homogeneous substrate. Allow to dry before coating, typically 5–6 hours at 23°C and 50% RH, and apply the coating within 24 hours. Protect from water for at least 24 hours.
Promotes adhesion of compatible acrylic and polyurethane resin coatings
Suitable for cementitious substrates with up to 3% residual humidity
Solvent-free water dispersion suitable for indoor application
Solvent-free, two-component epoxy primer in water dispersion. Mix A:B 1:4 by weight and dilute mixed product with water at 1:0.5. Application temperature +8°C to +35°C; substrate at least 3°C above dew point.
Adhesion primer for Mapecoat TNS coatings and specified acrylic or polyurethane resin systems on prepared cementitious substrates, worn asphalt, existing resin, PVC, linoleum and prefabricated rubber sports surfaces. Cementitious substrate residual humidity must not exceed 3%; do not use with rising damp.
10 kg kit: A 2 kg + B 8 kg. Mix A:B 1:4; dilute mixed product with water at 1:0.5. Beige mixed colour. Pot life 40–50 min at 23°C/50% RH. Typical wait before topcoat 5–6 h at 23°C/50% RH; topcoat within 24 h. Apply at +8°C to +35°C; protect from water for 24 h. Consumption 0.1–0.2 kg/m² of diluted product on a homogeneous substrate. Store 12 months in original packaging, dry, at minimum +5°C.
Application Guide
Prepare a sound, flat, clean surface free of dust, oil, grease and loose coatings; repair cracks and defects as specified. Mix the complete B component, add all A and mix at low speed for at least 2 minutes. Add water at 1:0.5 to the mixed A+B and mix for at least 3 minutes. Apply evenly with a medium- or long-haired roller, spray or rubber squeegee in one or more coats according to substrate. Let dry completely before topcoating; typical wait 5–6 hours at 23°C/50% RH. Topcoat within 24 hours, otherwise re-prime. Protect from water for 24 hours; re-prime if wetted.
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Mapecoat TNS Primer EPW FAQs
Where can Mapecoat TNS Primer EPW be used?
It is an adhesion primer for products in the Mapecoat TNS range and specified acrylic or polyurethane resins on prepared cementitious, worn asphalt and sports flooring substrates, including existing resin, PVC, linoleum and suitable rubber mats.
Can it be applied to damp concrete?
The TDS permits cementitious substrates with up to 3% residual humidity. Do not use where there is rising damp or more than 3% residual humidity.
How is the 10 kg kit mixed and diluted?
Mix the complete 2 kg component A with the complete 8 kg component B, then dilute the mixed product with water at a product-to-water ratio of 1:0.5. Do not mix partial component quantities.
What is the consumption rate?
Approximately 0.1–0.2 kg/m² of diluted product on a homogeneous substrate. Actual use depends on substrate absorption and roughness and the application method.
When can the next coating be applied?
Wait until the primer is completely dry. The TDS gives a typical 5–6 hour wait at 23°C and 50% RH; apply the next coat within 24 hours or re-apply primer. Protect the primer from water for at least 24 hours.
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