Moisture Mapping The Ultimate Guide to Wood Moisture Content

What is Wood Moisture Content?

Wood moisture content (MC) refers to the amount of moisture present within the wood's structure. It plays a crucial role in determining the wood's physical properties and performance.

When wood is freshly cut, it typically has a high MC, which is gradually reduced as the wood dries. The ideal MC for various purposes differs greatly, with firewood requiring specific moisture levels for optimal burning efficiency.

What is the Ideal Moisture Content for Firewood?

Firewood with a lower MC is preferred as it burns more efficiently, produces less smoke, and generates more heat. The ideal MC for firewood typically ranges between 15% and 20%. At this moisture level, the wood has lost most of its bound water, making it easier to ignite and sustain a flame.

• Below 15%: Wood with MC below 15% is considered "seasoned" and produces excellent burning characteristics, including easy ignition, reduced smoke, and higher heat output.
• Above 20%: Wood with MC above 20% is considered "green" or "wet" and exhibits poor burning qualities, such as difficulty igniting, excessive smoke production, and lower heat generation.

Monitoring the MC of firewood is essential to ensure optimal burning performance. This can be achieved using specialized moisture meters or by observing physical characteristics such as the wood's weight, cracking sounds, and color.