Ideal Thickness for Cordwood Cabin Walls?

Cordwood Wall Composition

When building a cordwood cabin wall, it’s essential to achieve the right balance of cordwood material, insulation, and mortar. A general guideline for a cordwood wall is to have 8-10 inches of cordwood material, which can be achieved by stacking 4-5 courses of cordwood. This thickness provides sufficient structural integrity and thermal mass to the wall.

Insulation and Mortar Requirements

In addition to the cordwood material, you’ll need to incorporate insulation and mortar to ensure a well-insulated and durable wall. A good rule of thumb is to use 2-3 inches of insulation, such as recycled denim or wool, in the core of the wall. This will provide adequate thermal insulation to the cordwood material. The mortar mix should be a blend of 1 part cement to 2 parts sand, with a 10% additive of sawdust or wood fibers to improve breathability and reduce shrinkage.

Construction Techniques

When constructing cordwood walls, it’s crucial to use proper techniques to ensure a strong and durable structure. Start by building a foundation of compacted gravel, followed by a layer of compacted sand. Then, begin stacking the cordwood material, applying a thin layer of mortar between each course. Use a level and a string line to maintain a straight and level wall. As you build, be sure to leave space for the insulation and mortar, and use a mix of large and small logs to create a stable and aesthetically pleasing wall.