Duct penetration into roof curb horizontal



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Duct penetration into roof curb horizontal

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Roof Curbs

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Small vent pipes and ducts less than mm do not require additional . The back and side curbs of roof penetrations must be regarded as internal gutters and ..

cleansing, they should be made in the horizontal plane, i.e. across the roof.

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9.9A. Ventilator Flashing

Description:The minimum weight for copper sheets used in flashing roof penetrations is 16 oz. This sleeve runs up to the top of the vent pipe. The cap flashing is sealed at its top edge where it meets the pipe. The horizontal portion is nailed to wood blocking or to a nailable deck. Effective separation of the aluminum and the copper is provided with the use of butyl tape. A copper sleeve is soldered to the base flashing.

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Views: 5062 Date: 2018-06-18 Favorited: 93 favorites

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