| Primary Purpose |
Selected primarily for appearance, landscape enhancement and use as a visible finished surface. |
Selected primarily for structural support, compaction, drainage and construction performance. |
| Typical Shape |
May be rounded, smooth, naturally irregular or specially processed, depending on the particular material. |
Typically angular, with fractured faces and edges created during the crushing process. |
| Surface Texture |
Often smooth, weathered or visually distinctive, with texture playing an important role in product selection. |
Generally rough and coarse, helping individual pieces grip and interlock with one another. |
| Color and Appearance |
Available in colors and blends chosen to complement buildings, planting beds, hardscapes and other landscape features. |
Usually valued more for performance than appearance, although color varies according to the source stone. |
| Size Consistency |
Commonly screened into defined sizes to create a clean and visually consistent finished surface. |
Produced in specified aggregate sizes or gradations based on the intended construction application. |
| Compaction |
Rounded decorative stone generally does not compact tightly and may remain somewhat movable. |
Angular pieces can interlock and compact effectively. Materials that include fines generally compact more tightly than washed stone. |
| Drainage |
Provides good drainage when the stone is clean and contains little or no fine material. |
Drainage performance depends on the gradation. Clean crushed stone drains readily, while dense-graded material is designed primarily for compaction. |
| Stability Underfoot |
Rounded stone may shift, roll or migrate, especially in frequently traveled areas. |
Angular stone usually provides greater stability because the fractured pieces lock together. |
| Common Applications |
Landscape beds, borders, walkways, drainage accents, water features, exposed ground cover and decorative installations. |
Driveway bases, road bases, building pads, drainage systems, pipe bedding, trench backfill and other construction applications. |
| Finished Appearance |
Intended to remain visible and contribute color, texture and visual definition to the completed project. |
Often installed beneath another surface or used where dependable performance is more important than decorative appearance. |
| Maintenance |
May require edging, occasional raking, replenishment or redistribution to maintain a uniform appearance. |
Properly installed and compacted material generally remains stable, although heavily used surfaces may occasionally require additional stone. |
| Typical Installation |
Commonly installed as a visible surface layer over prepared soil, compacted base material or landscape fabric. |
Commonly installed in prepared lifts and compacted to achieve the required depth, density and structural performance. |
| Use With Geotextile Fabric |
Fabric may help separate the stone from soil and reduce mixing or settlement in landscape applications. |
Geotextile may be used to separate aggregate from soft subgrade, improve stability and reduce contamination between materials. |
| Primary Selection Factors |
Color, size, texture, shape, architectural compatibility and the desired finished appearance. |
Gradation, compaction, drainage, load requirements, installation specifications and intended use. |