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Plywood for flooring
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<blockquote data-quote="FuzzyGrub" data-source="post: 492150" data-attributes="member: 3438"><p>I had to look up RTD plywood. Looks like it is replacing CDX in home constuction. It is rated for mild moisture contact. </p><p></p><p>I wouldn't use it, even glassed in. 3/4" is probably overkill and heavy. Use foam between the ribs for flotation and floor support. If you have to use plywood, go 1/2" exterior grade, ACX. If the foam sheeting is the same thickness as the top of the ribs, you can go with a thin sheet of aluminum. I went with 0.040" thick aluminum over foam more than 10 years ago. Still going strong.</p></blockquote><p></p>
[QUOTE="FuzzyGrub, post: 492150, member: 3438"] I had to look up RTD plywood. Looks like it is replacing CDX in home constuction. It is rated for mild moisture contact. I wouldn't use it, even glassed in. 3/4" is probably overkill and heavy. Use foam between the ribs for flotation and floor support. If you have to use plywood, go 1/2" exterior grade, ACX. If the foam sheeting is the same thickness as the top of the ribs, you can go with a thin sheet of aluminum. I went with 0.040" thick aluminum over foam more than 10 years ago. Still going strong. [/QUOTE]
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