Granite curbing is made from gray granites that range from lighter colors to almost charcoal. Grey granite curbing is very common on public streets, including radius curb and catch basin stones,
Granite has been used as curbing for over 100 years. Years of wear, combined with exposure the elements and give the material its earth-tone color palette.
Widths: 4 inches and wider
Depths: 4 to 24 inches
Lengths: up to 10 feet *
Radius curves: 1 to 125 feet
* Standard curbing are typically random in length (3 - 10 feet); however, cut-to-length units are available upon request.
There are a variety basic finish options available which may be applied to the top and face of a vertical curb. Any combination of these finish treatments may be specified, i.e., sawn top & split face; thermal top & split face; etc.
Sawn top: most common; slabs for curb are typically sawn top and bottom; the top of the curb has a smooth finish created by saw cutting.
Split face (standard): a natural face created when the slab is split on a guillotine; the resulting face of the curb has a rough finish.
Spit top: the top of the curb has a rough finish created by being split; for an historic look
Thermal top: fine stipple finish for aesthetic look or traction in pedestrian areas. Slab is processed through a thermaling machine, then split or sawn into curb.
Sawn face: the face of the curb has a smooth finish created by saw cutting.
Clean back: protrusions greater than 1/4-inch are removed using hand tools to create a tighter tolerance for when pavers are abutted to curb.
Sawn back: provides the tightest tolerance for when pavers are abutted to curb.
Edge Detail Options
There are five basic edge details that may be specified to the exposed edges of a vertical curb:
Straight edge (standard).
Buzzed: 1/4-inch camfer (or eased) edge.
Rounded edge: one or both edges are camfered and then rounded off to 1/2-inch or greater radius.
Chamfer: 45-degree bevel is standard, 1/2", 3/4" or 1".
Beveled mountable: 45-degree chamfer is standard, 3" x 3", 4" x 4" or 5" x 5".
There are three basic joint options that may be specified on vertical curb, depending on whether it is straight or curved:
Standard: a straight 90-degree cut, with each bottom corner knocked off to aid installation and provide a point to mortar one curb to another.
Full: a straight cut with 90-degree angles at top and bottom.
Mitered: an angled cut, top to bottom of curb reveal, allowing the end of one curb piece to butt.