Maximize South Africa’s solar potential with Stonecrete’s Solar Ballast Blocks. Our non-penetrating concrete solutions provide a durable, damage-free foundation for domestic, industrial, and commercial flat roofs.Trusted by professional installers, our blocks feature an industry-leading cast-in threaded socket. This innovation eliminates the need for heavy equipment on-site and significantly reduces installation time, allowing for seamless bracket mounting in a range of sizes and weight increments.