Retaining Wall Materials for a 20' × 2' Wall

A 20-foot wall 2 ft high is 40 sq ft of face — about 60 standard 16×6" blocks plus caps and base gravel. Pick a different block size, a custom block, or poured/timber/stone above.

You'll need

60 blocks

Wall area

40 sq ft20' long × 2' high

Wall blocks

6016" long × 6" high × 10" deep

Cap blocks

15~16" units

Gravel base / backfill

1.0 tons6"-deep leveling base + drainage backfill

Block cost (est.)

$300~$5/block material

Planning estimate. Adjust allowances and sample prices for your supplier; tax, delivery, and labor are not included.

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Retaining Wall Materials for a 20' × 2' Wall

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