Grading Fill Against Foundation: Soil Type & Compaction

To build up grade against a foundation: use sandy or clay fill—avoid black dirt/organic topsoil (decomposes, settles). Compact in 6–8 inch lifts with a vibratory plate compactor (rental). Each lift: spread, compact, repeat to final grade. Slope ¼ inch per foot away from house.

Proper compaction prevents future settlement. Organic soils shrink as they rot—never use them against structures.