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Unread 06-09-2015, 03:19 PM   #17
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Join Date: Jan 2013
Location: Virginia
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You'll need to cut down a full sheet of AC grade plywood to size. Lowes sells Plytanium 23/32" plywood which should work fine and they will cut it down for you.

Originally Posted by AM
(I have a small car at the moment)
That's what neighbors are for. Living in Missouri, your never more that two houses from a pickup!

Once you have the plywood cut to size, cut the 5" hole for the Kerdi drain centered over the existing pipe and bond it to the concrete using a quality adhesive.

Per their technical data, LOCTITE® PL PREMIUM® POLYURETHANE CONSTRUCTION ADHESIVE should work well. I'd trowel it out on both the concrete and the plywood using a 1/8" v notch or similar. You can get the technical data sheet here with usage instructions.

Originally Posted by LOCTITE
Recommended For bonding most common construction materials such as wood, treated wood, hardwood flooring, concrete, stone, marble, slate, masonry, brick, foam insulation of all sorts, carpets, metal, lead, cement-based products, ceramic, fiberglass, drywall and mirrors
Go with the Kerdi drain system, c'mon, you know you want to! This thread provided an interesting primer on the Kerdi drain system including tips on cutting off the drain line.
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