Upstand Verge Trim is designed to be used in applications where you are fixings from above, such as the connection to a flat roof or where the upstand can slide up behind the fascia board. It is available in various different widths to house different thicknesses of insulation. The Upstand Verge Trim creates a completely waterproof seal without the need for silicone sealant or expanding foam tape, thus ensuring water falls away from the EWI system. This particular Verge Trim should be attached to the wall using screws at 300mm centres.