Plywood recommended for under quartz countertop?
I am helping my sister install her 3/4” quartz countertop this week. I bought 5/8” Cdx for the counter to sit on. She is complaining about the smell of the cdx and that she would like to use something without added formaldehyde because that’s what all her cabinets are .
What would you guys reccomend ? In your experience how long does it take for the smell of cdx (fir) to go away? Is cdx less toxic than other plywood boards ?
I could get some purebond plywood but they only make it 3/4” which I believe will be too thick.
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