
Del Castillo Gray
DESCRIPTION
Del Castillo Gray comes from Spain’s oldest operating quarry dating back to the 16th century. The stone is Bernardos phyllite which the International Union of Geological Sciences named as a “Heritage Stone” in 2022.
Del Castillo Gray is a refined phyllite slate quarried near Segovia, Spain. It has a medium gray tone with silver/blue undertones, sourced from a single origin quarry with roots dating back to the 1500s. Offered in 7–8 mm and 8–10 mm thicknesses, it’s robust yet elegant, suitable for both roofing and interior applications




Color representation is for reference only. Monitor variations may affect accuracy. Contact California Slate Company for accurate color samples before final selection. Please contact us for tile selection guidance.
KEY FEATURES
CHARACTERISTICS
- Color & Texture:
Medium-to-dark gray with a smooth, lightly textured surface; uniform appearance with subtle tonal variation.
Durability:
High-density, non-fading, resistant to severe weather and freeze-thaw cycles.
Workability:
Reliable quarrying ensures consistent thickness; cuts cleanly with hand tools. Longevity: Service life of 100+ years with minimal upkeep.
Standards:
Meets ASTM C406 (S1 Grade) for strength, absorption, and weather resistance.
Cool Roof:
Meets Title 24 requirements (high Solar Reflectance Index).


Even Medium Gray
Smooth surfaces, rough edges

16″ × 10″ and 16″ × 8″

1⁄4″ to 3⁄8″ (7 to 8mm)

100-year limited warranty