Yes, Crystal Light Gray Terrazzo can be used in heavy use areas. Terrazzo is known for its durability and strength, making it suitable for high-traffic areas such as commercial spaces, airports, train stations, and shopping malls. It is resistant to stains, scratches, and other damage, making it a practical choice for heavy use areas.

Crystal Light Gray Terrazzo is not recommended for exterior applications in very sunny climates. Terrazzo is made up of a combination of natural stone aggregates and cement, which can be susceptible to fading, discoloration, and deterioration when exposed to excessive sunlight, heat, and UV rays. Additionally, the cement matrix used in terrazzo can be prone to expansion and contraction, which can lead to cracking or damage when subjected to extreme temperature fluctuations. It is best to consult with a terrazzo professional or manufacturer for specific recommendations and alternatives for exterior applications in very sunny climates.