12.4. Flat Siding

Description: This type of siding is fabricated from 24-ounce copper. Its profile is designed to provide very tight joints between panels, and very flat wall appearance with minimal shadows. Panel depth is approximately 1/4". This system is self-flashed at horizontal seams, using a double-fold detail.

The panels are installed from the top down. The bottoms of the panels are fastened to the substrate with screws through slotted holes in the siding. The screws are not fully tightened to allow the siding to expand and contract.

Transverse seams are lap joints with a minimum of 6 inch lap. The seams should be staggered on successive runs to prevent build-up of copper material.

Lock strips and flashing are of the same weight as the siding.

Substrate: Continuous nailable substrate.

Fastening Method: Screwed to substrate through slotted holes in panels.

12.4A. Typical Section

This section shows how the top edge of successive runs of copper siding are held by the double-fold and punched dimple of the run above. The bottom edge is screwed with stainless steel screws through slotted holes in the siding.

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12.4B. Typical Axonometric

The seams should be staggered as shown.

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12.4C. Parapet Detail

The installation of this siding begins at the top and work progresses down the wall. The top of the upper run of siding is held by a 24-ounce copper flashing and trim piece. This trim extends up and over the wood blocking, where it is nailed. A continuous copper lock strip is soldered to it. The coping cover then locks into this strip, extends over the coping and is locked into an edge strip on the opposite side of the wall.

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12.4D. Base Transition Detail

A continuous copper lock strip is nailed at the bottom of the substrate. The copper siding is then locked into this strip.

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