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Moisture Readings in Relation to Wall Finishes and Coverings

What Should Moisture Readings Be for Internal Walls?

To ensure optimal performance and longevity of wall finishes and coverings, appropriate moisture levels within internal walls must be maintained. Reading moisture content accurately is crucial.

Ideal Moisture Readings for Internal Walls

  • Drywall: Below 15%
  • Plasterboard: Below 12%
  • Plywood: Below 18%
  • OSB: Below 19%

Consequences of Excessive Moisture

  • Failure of adhesives, paint, and wallpaper
  • Mold and mildew growth
  • Structural damage to walls, ceilings, and floors

Moisture Sources and Control

Excessive moisture in internal walls can result from various sources, such as:

  • Plumbing leaks
  • Roofing problems
  • Poor ventilation

To control moisture levels effectively, it is essential to:

  • Address leaks and roofing issues promptly
  • Provide adequate ventilation
  • Use moisture-resistant building materials where appropriate

By adhering to recommended moisture readings and implementing proper moisture control measures, you can safeguard the integrity and durability of your wall finishes and coverings.