03/10/2026
Hairline Wall Cracks? Don’t Just Cover Them With Wall Putty! ⚠️
A small hairline crack may look harmless, but simply applying wall putty can sometimes hide the crack instead of fixing its cause.
In this practical construction tip, Civil Engineer Inamullah Hashmi explains the correct approach for minor plaster cracks:
🔹 Clean the crack properly
🔹 Open it into a shallow V-groove
🔹 Apply a suitable crack filler
🔹 Use fiberglass mesh where required
🔹 Finish and smooth the repaired surface correctly
But remember: not every crack is a plaster problem.
If a crack is:
• Recurring after repair
• Getting wider
• Long or diagonal
• Appearing around structural elements
…it should be inspected further before simply applying putty or filler.
🏗️ Smart Construction Tips brings you practical, reality-based construction knowledge from actual site experience, helping homeowners understand construction problems before they become expensive repairs.
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