Panel Siding Flashing

The windows and doors are aluminum clad with a 1x4 picture frame trim detail.

Panel siding flashing.

My specific project specifies lp smartside reverse board and batten siding in 4x8 sheets. The large leg of the metal goes against the wall leaving the seat and face covering the top edge of the siding. Using metal window head flashing directs the water away from the wall and eliminates that problem. Corrugated metals incorporated proudly introduces metal flashings as the latest addition to its product line for metal roofing and siding.

Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud. The flashing can be used over window trim band boards panel intersections and other vertical. It is used to protect the horizontal joints between sheets of siding from water infiltration. I am mainly concerned about the detail at the head where it should be flashed.

Begin at either end of the wall and set the level middle section of the z flashing onto the top edge of the siding panel with the wider flange upward and against the wall framing. Galvanized steel z flashing is made from 28 gauge galvanized steel. The seat dimension 3 8 in corresponds to the siding thickness.