Standard roof duct penetration detail


Lightning Conductor Down Lead Penetration. Dry Type Transformer V or Less Grounding. Piping Support Above Ceiling. MP Vertical - Flash Tank Piping. Biomedical Research Laboratories Volume 3: Roof Area Divider 9. In Line Pump Piping Installation.
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Penetration Details

The copper base flashing extends a minimum of 6" onto the roof in all directions. This detail illustrates a method of flashing a ventilator on a sloped roof. Eave Snow Flashing 9. A copper cap is placed over the exposed edges and is soldered to the sleeve. Ridges and Hips 9. Pipe Penetration with Wood Curb This detail shows a penetration with a wood curb.
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Architectural Details: Flashings and Copings - Roof Penetrations

This detail shows the head of an aluminum skylight with a wood curb installed in a standing seam copper roof. Ridges and Hips 9. The lower edge is hemmed for stiffness. A copper sleeve is soldered to the base flashing. The roof edge of the flashing is locked and soldered into a copper apron.
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Standard roof duct penetration detail
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Standard roof duct penetration detail



Description: The apron is cleated at its upper edge and is joined to the copper roof pans with a transverse seam. The copper base flashing extends a minimum of 6" onto the roof in all directions. Effective separation of the aluminum and the copper is provided with the use of butyl tape. The preferred method of flashing penetrations through flat roofs involves the construction of a curb around the opening.

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