Moisture mapping is a vital component of any commercial building maintenance program. It allows facility managers to quickly identify areas of excessive moisture that could lead to mold growth, rot, and other structural damage.

Acceptable Moisture Levels

The acceptable moisture level in walls varies depending on the material and construction of the wall. In general, however, the following guidelines can be used:

• Wood frame walls: 12-15%
• Brick or masonry walls: 10-12%
• Concrete walls: 6-8%

Any moisture level above these guidelines is considered excessive and should be investigated further.

How Much Moisture is OK in Walls?

The amount of moisture that is acceptable in walls will vary depending on a number of factors, including:

• The type of wall: Wood frame walls are more susceptible to moisture damage than brick or masonry walls.
• The climate: Walls in humid climates are more likely to experience moisture issues than walls in dry climates.
• The presence of insulation: Insulation can help to trap moisture in walls, which can lead to mold growth.
• The condition of the wall: Damaged walls are more likely to allow moisture to penetrate.

As a general rule, it is best to keep the moisture level in walls below 15%. Any moisture level above this level should be monitored and addressed if necessary.

Moisture mapping is a valuable tool that can help facility managers to maintain the integrity of their buildings. By understanding the acceptable moisture levels in walls, facility managers can take steps to prevent moisture damage and ensure the safety and longevity of their buildings.