A critical part of high-quality painting works in Singapore is the application of a sealer (primer). Given our humid climate, internal walls often face "chalking" or alkaline attacks. Professionals recommend an oil-based or water-based sealer to ensure the topcoat adheres properly and lasts for the full 5 to 7-year cycle. Adding a sealer typically costs an additional $300 to $600 for ... https://shakuraconstruction.sg/services/painting-works-demolition/