How do I keep cedar boards from cupping?

Bob Watson
by Bob Watson

Using cedar boards 1x6.

  6 answers
  • Redcatcec Redcatcec on Jan 06, 2019

    Hi Bob,

    What is your project?

  • Kim Richardson Kim Richardson on Jan 06, 2019

    If you are drying them put strips between them then put weight on them

  • Galen W. Yoder Galen W. Yoder on Jan 06, 2019

    If you don't use the 1x6's rite away, keep them stacked flat,and covered. Direct sun light is going to dry the exposed surface of any wood more rapidly causing warpage, twisting, and shrinkage. ( with some low grades of hemlock, it may begin to just crawl off the pile and slither away!!) Just Kidding!!, When it is time to use your material, Exterior or interior, fastening at point of contact within the outer inch/--3/4" with galvanized nails or treated screws. If it is strictly an interior application Kim's suggestion of Re- stacking in a controlled environment with spacing and "stickering", between each layer for a more controlled drying!

  • Kmdreamer Kmdreamer on Jan 06, 2019

    Glue the whole board down or nail it

  • It depends on how you're using them. One thing to note though, is to pay attention to the ends of the boards. The wood will have curved ridges. The curves should face down like an upside cup, so that any warping happens towards the bottom and not the top. Hope that makes sense.

  • Bob Watson Bob Watson on Jan 07, 2019

    Thank you for your