The capex snap down has a rigid, flat aluminium base bar, combined with a UV stable pvc clip down or 'snap down' cover. It is used to install roofing sheet across horizontal rafters and is ideal for roof canopies, lean-to roofs and outdoor shelters.
The Lean To Flashing profile or LTF, is a rigid aluminium bar designed to sit against a flat wall and extend at an angle to meet the surface of the roofing sheet. Many installers apply a bead of silicone on the top edge to ensure a waterproof seal where the profile is touching the wall or substrate.