Application Guide
How to Apply Wall Primer Before Painting
Wall preparation and surface porosity play a significant role in how well a paint system performs. Applying primer correctly helps seal the surface, improve adhesion and create a more uniform base for the coats that follow.
Step-by-Step Application
Prepare the Surface
Ensure the wall is clean and dry. Remove dirt, grease and loose particles. Sand shiny surfaces for better adhesion. Fill cracks and imperfections.
Stir the Primer
Stir 24M Primer thoroughly before use to ensure consistent texture and performance.
Dilute
Dilute with up to 40% clean water. As a practical reference, 1 litre of primer can be mixed with up to 400 ml of clean water.
Apply
Apply using a brush, roller or airless spray. Ensure even coverage across the surface.
Apply 1–2 Coats
Apply 1–2 coats depending on the porosity and condition of the surface. More porous surfaces may require additional coats.
Coverage & Drying Times
Coverage
10–14 m²/L/coat*
Touch Dry
30–60 minutes
Recoat
3–4 hours
*Actual coverage may vary depending on substrate, surface condition, porosity, application method and site conditions.
Drying time may vary with temperature, humidity, ventilation and surface conditions.
Why Surface Preparation Matters
Primer consumption varies by substrate and porosity. Sealing porous surfaces creates a better and more uniform base for the subsequent paint system.
Different surfaces—cement, putty-finished walls, interior and exterior substrates—can have different absorption levels and therefore different primer consumption. For project-specific guidance, contact the 24M team.