Thermal/Moisture Roof and Deck InsulationRoof R-value to be R40Weather Barriers Air Barriers All air/vapour barrier membrane installations shall be orientated according to manufacturer‟s specifications.In all circumstances the air/vapour barrier shall overlap the foundation wall a minimum of 150 mm.All joints must be overlapped (minimum 150 mm) and rolled to eliminate all creases and as per the installation manual.All installations must meet the approval of the design Architect and the University of Lethbridge Building Envelope Commissioning team.Membrane RoofingElastomeric Membrane Roofing option: Elastomeric modified bitumen fully adhered roof type.Thermoplastic Membrane Roofing Roof option: Thermoplastic polyolefin membrane roof type.
