What Should Moisture Readings Be for Internal Walls?

The moisture content of internal walls is a crucial factor in maintaining a healthy and comfortable living environment. Excessive moisture can lead to a range of problems, including mold growth, structural damage, and poor indoor air quality. Therefore, it is essential to monitor and assess the existing moisture levels within your internal walls.

The moisture content of internal walls should be kept below 15%. Higher moisture levels indicate the presence of excess moisture that can cause damage and health concerns.

Assessment Methods

• Moisture meters: These handheld devices measure the moisture content of materials by detecting the electrical resistance between two probes. They provide instant readings, but their accuracy can be affected by factors such as the material’s temperature and density.
• Relative humidity sensors: These devices measure the relative humidity of the air within the wall cavity. They are less invasive than moisture meters but require the installation of a probe within the wall.
• Non-destructive testing methods: Such as infrared thermography or ground-penetrating radar, can be used to detect moisture without causing any damage to the wall.

Importance of Moisture Assessment

Regular monitoring of moisture levels in internal walls is crucial for the following reasons:

• Early detection: By assessing moisture levels regularly, you can detect and address any potential moisture issues before they become serious problems.
• Prevention of damage: Prolonged exposure to moisture can lead to structural damage, including rot and decay. Assessing and controlling moisture levels helps prevent such damage.
• Improved indoor air quality: Excessive moisture in internal walls can contribute to poor indoor air quality, leading to respiratory problems and other health concerns.
• Energy efficiency: Moisture in internal walls can reduce the effectiveness of insulation, leading to higher energy consumption and increased utility bills.