Foundation Types for 6x6 Garden Shed
Concrete Slab Foundation:
- Slab must be at least the same size as assembled floor frame (70” x 75”) or larger.
- 6” Deep foundation.
- 0.7 Cubic Yards of concrete required.
- A concrete slab will have the longest durability out of your foundation options.
Once level, a concrete slab is the easiest surface to build on.
Gravel with 4x4 Pressure Treated Stringers:
- Excavate at least 6” deep, and 6” wider than floor frame on each side.
- 1.0 Cubic Yards of gravel required, approximately 9 wheelbarrows.
- 4 - 4x4 Pressure Treated Stringers 75” long required.
- Evenly spaced, with one at each end of floor frame.
Saves money on materials, easy to level and work with.
Gravel with Patio Paver Stones:
- Excavate at least 6” deep, and 6” wider than floor frame on each side.
- 1.0 Cubic Yards of gravel required, approximately 9 wheelbarrows.
- 12 patio pavers (8” x 8” or larger).
- Center patio paver stones underneath floor runners and underneath seams in floor joists.
Patio paver stones are widely available from most landscape stores.
70”
75”
6” Deep
82”
87”
4 - 4”x4”x75”
12 Patio Stones
Floor Frame
Concrete Foundation
Completed Foundation
18 5/8”
Gravel Foundation
Gravel Foundation with treated stringers
Completed Foundation
Gravel Foundation
Gravel Foundation with Patio Pavers
Completed Foundation
Front Side
70”
75”
Front Side
Front Side
Front Side
Front Side
Front Side
82”
87”
Front Side
Front Side
Front Side
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