30/09/2026
Plastering is treated as finishing work. Structurally, it behaves like a separate layer that can fail on its own.
Thickness, mix ratio and curing decide whether plaster stays flat for decades or cracks within one monsoon.
→ Plaster thickness beyond 12-15mm in a single coat increases shrinkage cracking risk significantly
→ A richer cement-sand mix is not automatically stronger - it shrinks more and cracks more
→ Plaster needs the same curing discipline as concrete, minimum seven days of consistent moisture
→ Skipping curing to move faster to painting is the single most common cause of hairline cracks
→ IS 1661 specifies mix ratios and application thickness for different plaster types
At KoreBuild, plaster thickness and curing schedule are checked stage by stage, treated with the same discipline as structural concrete work.
A homeowner inspecting plaster quality should check for consistent thickness and visible curing marks, not just a smooth painted finish that can hide shortcuts underneath.
Plaster is not decoration. It is a layer with its own failure modes.