Metal Roofing Chimney Flashing Detail

Install two layers of butyl tape sealant under perimeter of pan flashing.

Metal roofing chimney flashing detail.

The bottom base flashing is made of a single piece of metal extending 3 to 6 inches down over the shingles that already have been installed and 12 inches some say less up the bottom face of the chimney. To provide a drip edge allow an overhang of 1 to 2 inches at the eave. The lead gutter lining is then overlapped by the cover flashing of the chimney stack. This flashing wraps a few inches around the sides of the chimney.

Section 07620 metal flashings 4 4 section 07900 sealants 4 8 5 cad detail library overview 5 1. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim. The base flashing for the sides of the chimney is called a step flashing. The ezi seal is also suitable for profiled and corrugated roofs and is simply screwed fixed down to the roof with no need for silicone.

A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Ridge vent sloped shingle roof 2 65. The back gutter is fitted to carry water from behind the chimney. This takes place at all edges the perimeters penetrations walls and valleys.

At the gable edge use a gable or sidewall flashing. Flat roof edge flashing 2 61 detail 2 25. Sloped shingle roof eave 2 63 detail 2 26a. This will keep weather out prevent lifting in high winds and provide a neat finished appearance.

Others call these soakers or baby tins. The trim and roofing sheet should be fastened every 12 to 24 inches along the gable edge. Roof penetrations brick chimney 2 33 detail 2 13b. The sponge gasket on the dektite ezi seal flashing make it the ideal flashing for polycarbonate roofs.

Apply sealant to sidewall flashing where pan flashing tabs will overlap. This is also used in other places where the roof covering is interrupted or terminated. Visit our dektite ezi seal flashing page or click on the picture for more details. Roof flashing is typically used to describe the metal components that weatherproof or seal the roof system.

Pan flashing should extend at least 12 inches up the roof plane. Rivet the pan flashing to the sidewall flashing.