Soil

Select Fill Dirt

Select fill is a controlled sand-clay blend engineered to compact. Where standard fill dirt is bulk volume, select fill is what goes under a slab, a driveway subgrade, or a building pad that has to hold its shape under load.

What it is used for

Building pads under slabs and shops
Driveway and parking subgrade
Structural backfill that must not settle
Raising pads above the surrounding grade

Depth & coverage

Recommended depth

6 to 8 inch lifts, compacted to spec on each lift.

Coverage

One cubic yard covers about 54 square feet at 6 inches deep.

Installation tips

1Moisture-condition each lift. Bone-dry select fill will not reach density.
2Test compaction if the pad is engineered. Guessing costs more than testing.
3Extend the pad at least a foot past the slab edge on all sides.

Need help with quantities? Our material calculator converts your bed dimensions into cubic yards, or read the installation guide before you start.

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