RTU

RTU is Northern Ireland’s leading manufacturer and supplier of high-quality, ready mixed building materials, serving the construction and self-build sectors.

RTU is also the parent company of Colinwell, further strengthening its position within the concrete products industry across the UK and Ireland.

Our product range includes Ready Mix Concrete, high-performance Floor Screeds, factory-produced Mortar and Plaster, and advanced screed systems such as Ultrabead, Ultracem, and Ultraflo® – each designed to enhance performance, speed, and efficiency on site. We also offer Zircon, a seamless concrete flooring solution, and Exposa®, our award-winning decorative concrete range.

With a dedicated delivery fleet, expert support, and a customer-first approach, we work in partnership with contractors, architects, and homeowners to ensure every product is delivered on time and to spec.