Homecote Primer Interior alkali resisting primer

Homecote Primer is a primer made from Styrene Acrylic binder with the features of good adhesion, effective alkali resistance. No added lead and mercury.

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Intended use:

Homecote Primer is suitable for new and previously painted interior masonry surface such as concrete, mortar, cement plaster, brick, gypsum board, light cement board, etc.

Technical Data

  • Color: White
  • Component: Styrene acrylic, pigments, additives & water.
  • Substrate temperature 30°C, relative humidity (RH) 50%: Surface drying time 0.5 hours; Painting interval, minimum 2 hours.
  • Theoretical coverage: 9.5 – 12.7 m2/liter/coat. Actual surface coverage will be depended on the spreading of paint film ability, dry film thickness, surface irregularities, technique and wastage during painting.

Construction methods

  • Application tools: Brush, Roller, Spray gun
  • After use: Clean equipment with clean water immediately after use
  • Dilution ratio: The paint is ready to use after proper stirring until homogeneous. If thinning is required, clean water may be added up to a maximum of 5%.

Construction Guide

Step 1 - Surface Preparation:

- New surface:

+ Let the surface dry after 28 days in normal condition (average temperature is 25°C - 30°C, relative humidity under 75%), the surface moisture is not exceed 16% (specialized measuring testing equipment). pH value is about 6-9.

+ Remove all dust, grease, wax, laitance, chalking and other contamination from the surface by specialized machine as: grinding, sanding, vacuum cleaner, high pressure water jet and proper cleanness.

+ Apply 2 coats Supertech Pro Putty Interior for smooth surface.

- Old surface:

+ Remove all dust, contamination, loose old paint from the surface by specialized machine as: Grinding, sanding, vacuum cleaner, high pressure water jet and proper cleanness. Treat the area attacked by fungus, algae with proper chemicals.

+ Wash the surface if required, let it fully dry, the substrate moisture must be lower than 16% (specialized measuring testing equipment).

+ Repair the damaged area. Cracks bigger than 0.1mm must be fixed and smoothed by Supertech Pro Putty Interior..

+ Apply 1 coat of proper sealer to improve adhesion for paint film.

Step 2 - Sealer: Apply 1 coat of Homecote Primer.

Step 3 - Topcoat: Apply 2 coats of Homecote Noi that/Nitto Extra.

*Note: Stir well before use and once opened, entire content should be used. Apply when temperature is from 10°C to 35°C and relative humidity under 75%.

Recommended paint system

Putty: 2 coats of Supertech Pro Putty Interior.


Primer: 1 coat of Homecote Primer


Topcoat: 2 coats of Homecote Interior/Nitto Extra

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