Roofing Case Studies

AlkorDesign at Lisnagelvin Primary


Lisnagelvin Primary School

Product used:

AlkorPlan 35176 1.5mm


Charcoal with matching AlkorPlan profiles L in Charcoal

Size of project:



Gleeson Roofing

Project Description:

AlkorDesign system was recently used on Lisnagelvin Primary School, Londonderry.

The roofing contractors were Gleeson Roofing of Lisnaskea and the main contractors were Tracey Bros. of Enniskillen. The roof had originally been specified as a metal standing seam however the architects, Isherwood & Ellis, and WELB were looking for an alternative to metal for value engineering reasons whilst achieving the same aesthetics.

Laydex NI Limited supplied the roofing contractors with 2500m² of AlkorPlan in Charcoal which was mechanically fixed through the insulation to the metal deck.

The AlkorDesign system was the perfect choice for this project since it simulates the appearance of standing seam without the weight and expense of Aluminium or Zinc.

The roof over the two storey block was a sloping courtyard roof and forming this in metal would have required the liner and the outer sheet to be rake cut at the valleys and a membrane lined insulated gutter to be installed. AlkorPlan PVC Membrane was both an easier solution for detailing and also proved to be a more economical solution for this roof.