How to Prepare New Plaster or Concrete Walls for Painting in Nigeria 2026
New plaster and concrete walls are highly porous and alkaline. Painting them without proper preparation often leads to peeling, uneven colour, or early failure. In 2026, following the correct preparation steps ensures a strong, long-lasting finish on new surfaces.
Essential Preparation Steps
- Allow Full Curing
New plaster and concrete need adequate time to dry and cure before painting. - Clean the Surface
Remove dust, loose particles, and any surface residues. - Apply an Alkali-Resistant Primer
This seals the porous surface and prevents the high pH from damaging the topcoat. - Fill Any Imperfections
Use a suitable filler for holes or uneven areas, then sand smooth. - Apply the Topcoat
Once the primer is fully dry, apply two even coats of quality Prestige paint.
Extra Tip
Skipping the alkali-resistant primer is one of the most common reasons paint fails on new walls in Nigeria.
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