Crushed Drain Rock 3/8"
Best for: Fine drainage and pipe bedding where bigger rock will not fit.
Type
Crushed drain rock
Size
3/8" (pea-sized) — smallest
Shape
Angular, washed
Drainage
Excellent
Overview
About Crushed Drain Rock 3/8"
Crushed drain rock three-eighths inch is the fine end of the drainage family — roughly pea-sized angular stone, washed clean of fines so water runs straight through the voids instead of clogging. Its small size is the whole advantage: it beds neatly around pipe, packs into narrow trenches and tight spaces, and leaves a more uniform, walkable surface than larger rock while still draining freely. Reach for it wherever the bigger sizes simply will not fit or sit right — fine pipe bedding, slim trench drains, the drainage layer beneath pavers, and planter and pot drainage. It is the precise, close-tolerance choice in our three-size drain-rock lineup of three-eighths, three-quarter and one-and-a-half inch.
- ✓Small angular crushed rock — pea-sized.
- ✓Fine drainage and pipe bedding.
- ✓Fits narrow trenches and tight spaces.
- ✓Clean and washed for free water flow.
Crushed drain rock 3/8" is the smallest of our three drainage sizes — roughly pea-sized angular stone, washed clean of fines so water runs straight through the voids instead of clogging. Its small size is the whole point: it beds neatly around pipe, packs into narrow trenches and tight spaces, and gives a more uniform, walkable surface than larger rock while still draining freely.
Reach for the 3/8" where the bigger drain rock simply will not fit or sit right — fine pipe bedding, slim trench drains, the drainage layer under pavers, planter and pot drainage, and similar close-tolerance work. For a standard French drain or wall backfill, step up to our 3/4". Sold by the ton at roughly 1.4 tons per cubic yard. (Tip: 3/8" is the smallest, 3/4" the everyday standard, and 1½" the largest, high-volume size.)
Specifications
The details
- Type
- Crushed drain rock
- Size
- 3/8" (pea-sized) — smallest
- Shape
- Angular, washed
- Drainage
- Excellent
- Unit weight
- ≈ 1.4 tons / cu yd
- Sold by
- Ton
Applications
Common uses
- ✓ Fine pipe bedding
- ✓ Narrow trench drains
- ✓ Paver base drainage layer
- ✓ Planter & pot drainage
- ✓ Tight-space drainage
- ✓ Walkable gravel fill
Need Crushed Drain Rock 3/8" on site?
Priority delivery across French Camp & San Joaquin County.
Questions
Crushed Drain Rock 3/8" — FAQ
- What size is 3/8" drain rock?
- Roughly pea-sized — the smallest of our three drain-rock sizes (3/8", 3/4", 1½"). It fits narrow trenches and beds pipe neatly.
- When should I use 3/8" instead of 3/4"?
- Use 3/8" for fine bedding, narrow trenches, planter drainage and tight spaces; use 3/4" for standard French drains and wall backfill.
- Does small drain rock still drain well?
- Yes — it is washed clean of fines, so water moves freely through the voids even at the smaller size.
More materials
Explore the rest of the yard
QuarryVirgin Baserock (AB Class 2)
Virgin baserock is the structural backbone of paved construction — a quarry-fresh Class 2 aggregate base crushed from solid stone and graded continuously from three-quarter inch down to fines. Because every particle is freshly fractured and angular, the blend keys together and compacts into a dense, rigid platform that distributes traffic loads down to the subgrade without rutting, pumping or settling. It is the same material specified beneath California highways, parking structures and building pads — certified to a minimum R-value of 78 and a sand equivalent of 22 under Caltrans Standard Specifications Section 26. When your project demands a clean, certified, load-bearing foundation engineered to perform for decades, this is the base to build on.
QuarryWash Baserock
Wash baserock delivers the structural performance of Class 2 aggregate base with a cleaner, free-draining character. It is the same crushed base material run through a wash plant to flush out excess silt and clay fines — the result is a low-dust product on the jobsite and a more permeable platform that lets water move through rather than perch on top. It still keys together and compacts under pavement and pads, but it is the smarter specification wherever drainage, cleanliness and a tidy backfill matter as much as raw stiffness. Crews choose it under permeable pavers, behind retaining walls and as pipe and utility base where washed material is preferred or required.
RecycledRecycled Base (Class II)
Recycled base is reclaimed concrete and asphalt, crushed and screened back into a graded three-quarter-inch aggregate that meets Caltrans Class II strength — engineered performance at a materially lower cost. The crushing process leaves the same angular, interlocking particle shape as virgin rock, so it compacts into a hard, stable platform that carries load just like quarried base, with a mild self-cementing tendency that can stiffen it further over time. For the vast majority of driveway, lot and pad work it performs on par with new base while diverting demolition debris from the landfill — a genuine sustainability advantage that can also support green-building credits. Produced on site at our French Camp yard, supply stays steady, local and competitively priced.