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Unread 02-22-2007, 04:21 PM   #1
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Location: Knoxville, TN
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Subfloor Question

Hello all. I have been reading these forums for a while and they are a great help for all of us DYI guys and gals.

I am in the process of cutting up a partical board sub-floor and replacing it. My question is if I should go with 3/4" TG plywood or 3/4" TG Advantech or similar. My house has a crawl space, and the joists are 16" OC. I have installed new headers to reduce my longest span to 8ft. I will be installing ceramic tile (over Ditra) in the kitchen, laundry room and baths and hardwood everywhere else. I have searched the forums and couldn't really find an answer on this question.

Thanks in advance for your help.

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Unread 02-22-2007, 05:11 PM   #2
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Howard, both products will serve you well under Ditra. At least that what Schluter has to say about it. My own personal preference is plywood because I think you get a better bond to it and there is less likelihood of edge swelling if the panels ever get wet.
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Unread 02-22-2007, 06:31 PM   #3
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Hi Howard,
Welcome to the Forum....
mm (aka "Paco")
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Unread 02-23-2007, 11:46 AM   #4
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Thanks for the reply. In looking at both products, the manufactured (Advantech) looks more uniform and appears to be stiffer. But, I'm leaning towards the old faithful plywood.

I know this is a tile forum, but does anyone have any experience with Advantech and nail down hardwood?

Many more posts coming as my projects continue.

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Unread 02-23-2007, 12:13 PM   #5
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I used Advantec on my remodeling. Part of that area is tiled. The manufacturer's site has test results that show it holds fasteners as good as or better than normal plywood.

The stuff is heavier than plywood, doesn't have any voids, and lays flatter. If you really want a super subfloor, it is available in thicker sheets (1-1/8" I think), but that would be REALLY heavy. I didn't have any trouble getting things to stick to it, and for remodeling, you wouldn't expect a week of rainstorms to give you grief, and ply would have problems, too. The stuff is fairly impervious to typical water exposure and isn't like most other chipboard products.
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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