It is a 2 part trim sold together and comes in 2 5m lengths. This is normally done with the plastic coated metal flashing strip called a wall trim but can also be the metal gutter drip trim as they are sometimes universal. Used along the gutter edge.
Permaroof Edge Trim Available In 2 5m X 65mm And 3 5m X 65mm As Well As Black White And Antracite Grey Designed To Fit Over The Ed Roof Edge Edges Foam Tape
Epdm Edge Trim 2 5m X 65mm Pre Foamed Designed To Fit Over The Edge Of The Roof The Profile Of The Trim Forms The Upstand And Ensures The W Foam Gutter Design