Application, installation practices and methodology often carry the blame for membrane failure but often downright poor engineering design is to blame, especially where design does not take cognisance of the risks attendant on site with specific reference to installation risk and practice. One such labour practice or technique employed by technicians on site during geomembrane installations to speed up their productivity especially employed while installing geomembrane panels of irregular size, is to cut off the un-wanted material by simply “scoring” the surface with a blade, then folding the geomembrane over ever so slightly and then proceeding to simply “tear” the unwanted piece off. This phenomena dictates that one reconsiders the application of finishes above and below the geomembrane. Mechanically induced “scoring”, is a reality on possibly more projects than one would care to entertain. Scientific and engineering stature can be unceremoniously questioned when failures present themselves on a project where such evidence is uncovered.