How to Properly Maintain Mortar in Cordwood Walls?

Inspecting and Repointing Mortar Joints

Regularly inspect the mortar joints in cordwood walls to identify areas of deterioration, such as crumbling or spalling. Repointing involves removing damaged mortar and replacing it with a new mixture, ideally done before water can seep into the walls and cause further damage. For repointing, use a mortar mix specifically designed for exterior applications, with a 1:3 ratio of type S or N cement to sand, and add a dash of hydrated lime for improved flexibility.

Addressing Water Damage and Leaks

Address any water damage or leaks in cordwood walls promptly to prevent further deterioration of the mortar. Use a sealant, such as caulk or silicone, to fill gaps and cracks, and ensure proper drainage around the walls. If water has compromised the integrity of the mortar, consider removing and replacing the affected section, taking care to match the original mortar mix and technique.

Providing Proper Protection and Maintenance

To maintain the integrity of cordwood walls, ensure they are properly protected from the elements. Install a durable roof, use weather-resistant flashing, and apply a waterproof sealant to any gaps or seams. Regularly inspect and clean the walls to prevent debris accumulation, and consider applying a breathable, water-repellent coating to the exterior surface to enhance durability.