1 Inch Drain Rock

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1 inch drain rock is one of the most commonly specified materials in civil and site construction, and for good reason — it drains fast, stays open, and doesn't break down under load or moisture. The angular shape locks the rock together so it holds its position in a trench or along a foundation wall without washing away.

We run our drain rock clean, which means no fines or dirt mixed in to clog the void space over time. When you're installing a French drain, bedding a utility pipe, or building a free-draining base for a retaining wall, you need material that actually does the job five years from now, not just on day one.

Common Uses

  • French drains and subsurface drainage systems
  • Pipe bedding for water, sewer, and storm drain installation
  • Foundation drainage and perimeter drain systems
  • Retaining wall backfill and drainage layer
  • Infiltration beds and dry wells

Product Specifications

Material Clean, crushed angular rock
Size 1 inch (nominal)
Fines Washed clean — minimal fines
Best Use Drainage systems, pipe bedding, free-draining backfill
Availability Available in bulk; call for pricing and scheduling
Delivery Delivered across the Inland Northwest and surrounding region

Note:

If your project requires a specific gradation or DOT specification for pipe bedding material, give us a call and we can confirm whether this product meets your spec or recommend an alternative.