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.
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.