Our specialised paving crews are fully trained in the laying of all bituminous materials We are now one of Ireland's largest contractors and have built a strong reputation and growing business in Ireland and the UK We can offer clients a pleasing aesthetic finish with the benefits of using a durable, strong, flexible material Since laying our first 'blacktop' road in the 1920s, our business has developed and expanded into Civil Engineering projects, Structural Steel manufacture, Roofing & Cladding, PPPs and Slipform Paving Originally the South of Ireland Asphalt Company, from which SIAC is an acronym, the manufacture of Mastic Asphalt was our main business