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Whether or not to cover plywood bottoms?

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Whether or not to cover plywood bottoms?

Post  Bobbi on 3/21/2014, 4:02 pm

We have recently made new SFG boxes to replace our old ones that had rotted.  I had lined the old boxes with a thin landscape liner thinking that might help the plywood last longer. However, I have recently read that moisture can get trapped between the liner and plywood causing the plywood bottom to wear out sooner. My sweet potato roots also grew into the fabric and some small tubers also grew under the cloth. My boxes are raised and sit on cinder blocks. Do any of you have an opinion on whether or not the liner would improve the longevity of the plywood or am I just adding an additional moisture problem?
Thanks.
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no more plywood

Post  Big Larry on 3/22/2014, 3:46 pm

home depot has barn board 16' to make planks for bottom. lasts longer. put screen down if you have gaps. the boards are also a lot cheaper than plywood and no gluey chemicals.
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Re: Whether or not to cover plywood bottoms?

Post  Bobbi on 3/23/2014, 8:58 pm

Thanks, Big Larry. Since we have already made the boxes, I will keep your barn board idea for new boxes or replacements.
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Re: Whether or not to cover plywood bottoms?

Post  sanderson on 3/24/2014, 2:41 am

Big Larry, thanks for the tip.
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Re: Whether or not to cover plywood bottoms?

Post  ralitaco on 9/13/2014, 1:00 pm

Larry,
What is barn board. I came up with nothing when I searched home depot or lowes.
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