Moisture Mapping Highlights Acceptable and Unacceptable Moisture Levels in Buildings

Moisture Mapping: Assessing Your Building's Health

Moisture mapping is a crucial process in building maintenance and management. It involves identifying and quantifying moisture levels in various parts of a structure to prevent premature deterioration and ensure the health and safety of occupants.

Acceptable Moisture Levels

Optimal moisture levels vary depending on the building materials, climate, and occupancy. Generally, ideal moisture levels range from 40% to 60% relative humidity (RH) for most materials.

• Wood and Wood Products: 7-12%
• Concrete and Masonry: 40-60%
• Gypsum Board and Plaster: 20-30%

What is a Bad Moisture Reading?

Moisture levels that exceed or fall below acceptable ranges can indicate potential problems:

• High Moisture: > 60% RH. Can lead to mold growth, rot, and structural damage.
• Low Moisture: < 40% RH. Can cause materials to become brittle, crack, and warp.

Identifying and addressing moisture problems promptly is crucial to maintaining building integrity, occupant health, and cost-effective operations.