Modern Precast home
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Samples of smooth, rockface, and double-wing keystones


Double-wing and regular rockface keystones are used on this home with bullnose sills at the base of the windows.

Precast concrete keystones are placed above entries, windows, and garages in all types of homes and commercial buildings. Keystones add richness to a building and accent the brick or stone. They allow you to accentuate one window or entry over another and can create additional focal points for a building. Several standard colors are available.

Standard sizes are available in both smooth and rockface finishes. Keystones stack in with brick of all sizes. Standard sizes are:

Keystone Name
6" Smooth
7" Trimmed
9" Rockface
9" Smooth
9" Trimmed
10" Smooth
11" Smooth
11" Trimmed
12" Rockface
12" Smooth
12" Rockface
13" Double-Wing Rockface
13" Double-Wing Smooth
15" Rockface
15" Smooth

Keystone Colors

Keystones are available in these standard colors and other desired colors. Colors may vary depending on monitor resolution.

Colors Mixed In White Cement
White Ash Almond
Blond Wheat Light Tan

Colors Mixed In Gray Cement
Regular Slate Gray Charcoal
Oak Burnt Orange Honey Slate
Cypress San Diego Buff Peach
Sunset Rose Red Brick Copper Canyon
Sand Beige Coral Reef Adobe
Mustard Buckskin Carmel
Taupe Redwood Chocolate