Yes, Karaja Grey Sintered Stone can be used in heavy use areas. Sintered stone is known for its high strength, durability, and resistance to scratching, staining, and heat. It is also non-porous, making it suitable for areas with high moisture and traffic, such as kitchens, bathrooms, and commercial spaces. However, it is always recommended to check the specific manufacturers guidelines and recommendations for the product before installation in heavy use areas.