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69953Re: [bolger] cedar paneling

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  • Roger Padvorac
    Nov 14, 2013
      A critical issue is checking if the wood plies are heartwood or sapwood. This could vary from sheet to sheet, so people's experience with it could vary.
      While the heartwood of the western red cedar is more resistant to rot than the heartwood of Douglass fir, the sapwood of western red cedar rots faster than the heartwood of Douglass fir.
      Confusing this situation is that while the western red cedar is in the cypress family, in the genus Thuja, and cedars are in the pine family in the genus Cedrus.
      It seems possible that the difference in rot resistance between sapwood and heartwood is a common issue, and with the general lowering of standards, that there could be more sapwood in plywood than there used to be. As a general rule of thumb, the sapwood is lighter in color than the heartwood.
      It seems likely the sapwood of western red cedar is so vulnerable to rot in part because it is so soft. While its hardwood of western red cedar is also comparatively soft, it is also saturated with very toxic chemicals (unlike the sapwood), and so is very resistant to rot. These issues might affect other Thuja and Cedrus species.
      May your day be filled with clarity, grace, strength, insight, balance, cooperating, and warm laughter,
      ----- Original Message -----
      Sent: Thursday, November 14, 2013 5:53 AM
      Subject: [bolger] cedar paneling

      Has anyone use 8mm x 48" x 96"  cedar paneling (see Home Depot) to build a boat ?


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