Cast Stone Colors
For samples please visit our cast stone samples page
Our Standard Cast Stone Color Chart
- Antique Terracotta
- French Provincial
- Jerusalem Stone
- Neutral Beige
- Tuscan Light
- Vintage Gray
About Our Cast Stone Colors
Premier Stoneworks uses a wet casting technique that incorporates integral powdered iron oxide pigments to create our cast stone colors.
ASTM C 979 – Standard Specification for Coloring Pigments for Integrally Pigmented Concrete. As a Certified Producer Member of the Cast Stone Institute, our cast stone product is certified to comply with ASTM C1364. This ASTM standard requires that our pigments comply with ASTM C 979.
To improve color consistency, cast stone companies should also employ the following best practices.
- Using the same white cement each time
- Using the same carefully selected aggregates within the concrete
- Using a high quality iron oxide pigment meeting ASTM C979
- Color matching with physical samples
- Regular testing and quality control
- Utilization of a computer operated batch plant to improve concrete mix consistency
In conformance with the Cast Stone Institute’s standards, we do NOT use any topically applied coloring method such as acid staining, color washing, sponging or painting.
Please note: Even when following Cast Stone Institute’s best practices, color in cast stone can and will vary, just as color in natural stone varies. Please keep in mind that the Cast Stone is intended to simulate natural cut stone by definition.
The ASTM C1364 standard includes limitations as to the variation in color difference. The hue is to be no more than 2 units difference from the original sample, and the total color difference is to be no more than 6 units difference from he original color sample. The method for measuring the units of measure are calculated using the ASTM D 2244 standard.
Color Matching Custom Cast Stone Colors
Even though many of our projects use one of our standard cast stone colors, a large percentage of our work requires a custom color that is color matched to a swatch, pantone or physical sample. We can take your color specifications and create sample pieces of cast stone that a customer can review and approve.
Here is a good resource for selecting colors that we can match: http://ncscolour.com/design/work-digitally-with-ncs/colouring-to-a-new-level/ . This tool can help create harmonious color palettes and give you the appropriate RGB or CMYK values.
Our colors are formulated from iron oxide pigments which are relatively stable. One exception is black which can sometimes fade. Black pigments without carbon black will experience less fading. For brighter whites, we can use titanium dioxide tint (TiO2) and, sometimes, a bit of blue. Both titanium dioxide and blue pigments are premium, more expensive pigments.
Ultimately all surfaces will fade, especially here in Florida, under our harsh UV light conditions. This will be particularly noticeable if a recently made piece of cast stone is placed next to one that has been in place for any significant length of time. Technically, the iron oxide pigments don’t fade. Rather, just as natural stone will bleach over time, so do the natural stone aggregates in a concrete mix.
Cast Stone Textures
Please note, colors appear slightly different for each texture, please make sure we give you the color sample with the texture you require.
Our available cast stone textures are:
- limestone – acid washed smooth cast stone
- keystone – antiqued texture resembling coral stone or aged stone (heavy or light)
- simulated coquina – we add real shells
Please see our cast stone color samples page for more images
Cast Stone Color Trends for Florida
Cast stone in Palm Beach and South Florida continues to favor neutral tones – predominantly off white with hints of tans, creams and grays of varying shades. These colors mimic the natural stone colors, and are dramatic when paired with brighter colors or foliage.