Roof Chimney Flashing Details

Mc15 chimney cricket flashing pan type.

Roof chimney flashing details.

Counterflashing will cover the tops of the step flashing. Chimneys have a foundation which may be independent from the house. For extra protection run a bead of urethane between the step flashing and the chimney. One common method is to lay the edge metal under the eaves membrane and over the rake.

Order about 12 in. Mc15a chimney cricket flashing step type. Mc14a chimney flashing step type. Mc16 skylight underlayment detail.

Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Chimney flashing kits are normally composed by 3 parts. Aluminum generally is not used since it is not compatible with masonry mortar. Mc12b metal flashing options.

The base of the counterflashing should include a hemmed drip edge to manage the water figure 12. It extends at least 8 up the wall and at least 4 onto the roof on all sides of the chimney. Details roofing wrb flashing. Kits made from copper lead coated copper freedom gray and tcsii are always soldered while aluminum parts are riveted and can be sealed before installation.

Roofers call these shingle tins. Some lumberyards stock a dormer flashing. Masonry chimneys allowing for movement. You ll need one for.

The minimum depth of the reglet should be 1 in but 1 in. More than the width of the chimney. Two ways to flash roof edges. Flashing is installed to surround roof features such as vents chimneys and skylights.

Bottom before the base. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Mc14 chimney flashing pan type. In addition to the saddle you ll need the following sheet metal parts see figure a.

On a chimney flashing. Press the flashing into the urethane to achieve a positive seal. Copper cap flashing then covers the upper edge. This section of the primary flashing extends across the face of the chimney to divert runoff around the chimney.

The flashing should extend away from the chimney past the base or step flashing before taking a sharp bend downward to create a capillary break an air space that will not allow capillary suction of water from below. Prebent step flashing 8 x 8 in. The front back and side flashing metal. In any case the roof deck.

Here is a specific side view of the primary flashing head flashing detail with a shingle roof covering the base of the head flashing. The front and back are custom fabricated to order for an exact fit.