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Flashing Details for Panel Siding

9aSApwW9w5 | Posted in GBA Pro Help on

I am wondering if anyone has any advice on properly flashing window and door penetrations when using a panel type siding. My specific project specifies LP Smartside reverse board and batten siding in 4×8 sheets. The windows and doors are aluminum clad, with a 1×4 picture frame trim detail.
I am mainly concerned about the detail at the head, where it should be flashed. I would like to avoid just cutting out a hole in the panel for the trimmed and flashed unit, then relying mainly on a caulk joint, but maybe properly detailed, this is the simplest option.
Thanks for any help.

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Replies

  1. GBA Editor
    Martin Holladay | | #1

    Pete,
    It's not clear from your question whether this is new construction or a window replacement job.

    Do these windows have flanges?

  2. 9aSApwW9w5 | | #2

    This is for new construction and the windows are flanged.

  3. GBA Editor
    Martin Holladay | | #3

    Pete,
    Your question is unclear. I don't know why you would depend on a caulk joint. You want metal Z-flashing at the head.

    Here are some details from Hardie (see below). You can see more details at
    http://www.jameshardie.com/pdf/best-practices/hz/hz5-canada-panel.pdf

  4. 9aSApwW9w5 | | #4

    Thank you, I had not seen that shim out detail before and seeing it drawn out now makes perfect sense.

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