High rise┬áExpertise and innovation in construction services help Aluma Systems stay on top in its chosen marketplace. Ruari McCallion speaks to president Stephen Tisdall. ItÔÇÖs not that often that something comes around in the construction industry that has what could be described as a transformational effect. But it does happen from time to time, and the Hi-Flyer from Aluma Systems looks like it fits the bill.