Decorative gravel and driveway stone from Ottr are screened and washed. Aggregate base materials (Dense Pack ¾" to minus, Crushed Concrete) intentionally include fines because the fines are what lets the material lock together under compaction.
What's screened/washed and what isn't (by intent)
| Material | Screened? | Washed? | Why |
|---|---|---|---|
| Decorative river rock (Riverbed ¼", ⅜", ¾", 1.5") | Yes | Yes | Visible landscape use — needs to look clean |
| Crushed driveway stone (Gray Crushed ⅜", ¾", 1.5"; Blue Stone ⅜", ½", ¾") | Yes | Yes | Top-coat use; minimal dust at delivery |
| Decorative specialty (White Marble, Mexican Beach Pebble, Granite, Creek Rock) | Yes | Yes | Premium decorative — high quality standard |
| Dense Pack ¾" to minus | Yes | NO (intentional) | Base material — the fines are required for compaction |
| Crushed Concrete 1" to minus | Yes | NO (intentional) | Base material — fines bind the recycled aggregate |
| Mason Sand, Paver Sand, Concrete Sand, Septic Sand | Yes | Yes | Construction-grade sand — washed for spec compliance |
What 'fines' means in delivered material
Even washed and screened materials can have a thin layer of dust at delivery from transit handling. This usually washes away with the first rain. For decorative installs where appearance matters immediately, a quick rinse with a hose after spreading clears it.
Browse the full product catalog — each product page describes the screen size and prep.
