Is It Possible to Build a Root Cellar Under an Existing Structure?

Assessing Structural Integrity

When considering building a root cellar under an existing structure, the first step is to assess the structural integrity of the building above. This involves evaluating the foundation, walls, and roof to ensure they can support the weight of the additional space and any potential loads from adjacent buildings or environmental factors. A qualified engineer or builder should inspect the structure and provide a written assessment of its capacity to support the additional loads.

Designing the Root Cellar

Once the structural integrity has been confirmed, the next step is to design the root cellar. This involves determining the optimal size, shape, and layout of the cellar to accommodate the desired storage capacity and ensure proper ventilation and drainage. A good rule of thumb is to design the cellar with a minimum ceiling height of 7 feet (2.1 meters) and a width and length that allows for easy access and aisle ways. The cellar should also be designed with a slight slope to allow for water to drain out.

Excavation and Construction

Excavation of the root cellar typically involves digging a trench or pit under the existing structure, taking care to avoid any utilities or obstructions. The walls and floor of the cellar should be constructed using durable materials such as concrete, brick, or stone to provide insulation and protect against moisture. A waterproof membrane should be applied to the walls and floor to prevent water from seeping into the cellar. The ceiling can be constructed using insulation and a waterproof material to create a dry and climate-controlled environment.