Things You'll Need:
- Plywood
- 3-inch diameter PVC Pipe
- Blast valves
- Large sheet of composite flooring material
- Gypsum board
- 2-by-4's of rot resistant lumber
- Insulation material
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Step 1
Determine dampest section of your basement. Crops need high humidity. The area where the sump pump is located is often the dampest. If possible, select a corner area for your basement root cellar as this offers the maximum coolness while requiring the minimum construction.
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Step 2
Create a ventilation system that allows cold outside air to enter. Select a section of the basement that includes a window. The window is essential to the cooling process as cold fresh air preserves the freshness of stored items. Remove the glass from the window.
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Step 3
Cut a piece of plywood to fit the window and cut two 3-inch diameter holes in the plywood. Cut the two pieces of pipe to fit through the holes while leaving plenty of room for adjusting the piping. Install a blast valve in each pipe, or another device for sealing off the pipes to prevent temperatures falling below freezing. Place the exhaust and intake pipes as far apart as possible.
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Step 4
Mark off the area for your root cellar using a large felt tip marker. Build the walls from a rot resistant material, such as 2-by-4's of cedar. Frame in the root cellar.
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Step 5
Use a plastic composite material for the floor since basement floors are damp. Add gypsum board to the interior and exterior. Use fiberglass insulation and foam to insulate the walls and make them as air tight as possible.
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Step 6
Add shelving to the root cellar for storage. The shelves should be spaced to allow air to flow between them. Lower shelves will be the coolest and upper shelves will be the warmest. Wire baskets are a good way to organize items stored in the cellar.
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Step 7
Hang a door. A root cellar does not need a fancy door. A piece of plywood can be used for the door and can be hung directly from the wall studs. The door could be built in two-sections to allow for quick removal of small items without letting cool air escape.
