Building a wooden pond

Joshaeus

Water hawthorn, Aponogeton Distachyos
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OK! So...cover the plywood with some sort of sealant to improve its lifespan?
 

sissy

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mine was on the inside because the people wanted it water tight and did not want a bulky liner in it .But I did seal the outside with marine varnish
 

Joshaeus

Water hawthorn, Aponogeton Distachyos
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I'm planning on using a liner anyway, but I will find an attractive marine varnish and waterproof the outside with that. Do I have to varnish only the outermost plywood or all the 2 by 6's and both layers of plywood?
 

Joshaeus

Water hawthorn, Aponogeton Distachyos
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Here's a side diagram of the water garden, assuming I go the 6 foot by 16 inch by 16 inch route. The orange is plywood, the brown is 2 by 6's, and the maroon is the lid. The blue is just empty space. The scale is 10 pixels equals 1 inch;

6ft water garden diagram.png
 

sissy

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the side ones if pressure treated will not need it .But get a moisture meter for wood because if it is not dry it will peel ,any moisture meter for wood will do
 

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