In construction projects, wall coatings and plastering systems affect not only appearance, but also durability, waterproofing performance, and long-term maintenance costs. Many projects experience problems such as: Exterior wall cracking and peeling Efflorescence and chalking Damp stains in bathrooms Uneven corners and edges Cracks between walls and ceilings Although these seem like surface defects, most are actually caused by substrate treatment, material selection, and improper construction practices. 1. Exterior Wall Paint Cracking & Peeling Main Causes Plaster applied too thick without layered application Dust remaining on substrate before coating No mesh reinforcement at different substrate joints Poor quality exterior putty Painting before walls are fully dry Prevention Solutions Apply plaster in layers with proper curing Remove all sanding dust before painting Use mesh reinforcement at wall junctions Select weather-resistant exterior putty Avoid construction under rain ...