Chimney Back Gutter Flashing

It is the metal or sealant layers that are meant to provide a watertight seal between the chimney and the roofline.

Chimney back gutter flashing.

Repeat for the back use the same letters unless otherwise indicated. It must be watertight. Chimney flashing exists at the base of the stack. It is installed to ensure that the lead flashing wraps around the tilting fillet and is overlapped by the roofing underlay.

Describe the direction of the line as you draw it. The back gutter is fitted to carry water from behind the chimney. However the most critical attribute of the flashing is simple. Begin drawing the flashing at the centre of the page.

This protective system is made in a variety of different means and techniques. Leadworx back gutter chimney flashings are designed and fabricated to suit any chimney size and orientation using code 4 sheet lead milled to british standard bs en 12588. Where the pen stops becomes the centre of the clock for the next line. For tapered flashings quote nearest edges first.

This forms a secret gutter behind the chimney extending at least 125 mm up the chimney framing. It is then dressed down over the lower flashing see figures 1 and 2. The lead gutter lining is then overlapped by the cover flashing of the chimney stack. Next the step flashing is cut and fitted to go over the sides of the soakers the final piece of leadwork is the back gutter and this is installed underneath the course of tiles and turned up the back of the chimney stack and into a course of bricks.

At the rear of the chimney a butyl epdm or lead gutter lining is carried over an anti ponding board.