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Trim Thickness With Hardie Panel and Batten Siding

bsandersga | Posted in General Questions on

I will be doing a Hardie panel board and batten siding for my garage. If I use the 3/4 inch Hardie battens over 5/16 inch panels, that adds up to 17/16 inch thickness. That will stand proud of the 5/4 (one inch) trim by 1/16 inch. Am I missing something or is this the way it is? Does it matter?

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Replies

  1. Expert Member
    MALCOLM TAYLOR | | #1

    bsandersga,

    The 5/4 trim is going where? Around windows and doors?

  2. bsandersga | | #2

    Yes, windows, doors corners, water table.

  3. Expert Member
    MALCOLM TAYLOR | | #3

    bsandersga,

    It only matters aesthetically. It usually looks better if the trim is deeper than the siding.

    You have a couple of alternatives I can think of:
    - You can back the trim with 1/4" plywood.
    - Or more typical is to mount the trim on top of the Hardi-panels - and then use Hardi-Trim if you want.

    1. bsandersga | | #4

      I just discovered that Miratec trim
      comes in a 1 1/4 thickness, so that might be the solution.

  4. TylerR55 | | #5

    Allura and the old version of LP also have the same issue, I just learned today while shopping for B&B at Menards. LP shows how to go around this in a Youtube video, they cut a strip of the panel to put behind the header, then header trim, then Z-bar above the header trim, then you put the panel over the Zbar and flush with the window sides. Lastly, you put the 5/4 trim around the whole window. if you don't cut the strip to go behind the header trim, you can't properly install the Z flashing above the header. New version of LP changed the thicknesses so that batten + panel are less than thickness of 5/4 trim. I plan to do the strip behind the header trim.

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