Coolestone, established by Alan Herron are Northern Ireland’s only stone masonry and stone supply company. Based in Dungannon, County Tyrone. Coolestone have an envied reputation as house builders, creating distinctive homes. Coolestone prides itself on the quality craftsmanship. Each of its stone masons offers a full in house service comprising of design, manufacture, supply, delivery and building of stone, providing you with the complete package for all your stone requirements.