Replies

1. Expert Member
   MALCOLM TAYLOR | Apr 17, 2022 01:21pm | #1

   Micheal,

   Yes, it's an either/or thing. If you want to glue down the partition walls you could use pt lumber for the plates. This would prevent rot, but still allow some moisture movement by capillary action if the slab was damp.

   Any particular reason you want to glue the plates rather than use a mechanical attachment?

2. 
   mritterjr | Apr 17, 2022 01:34pm | #2

   Malcom,

   Thanks - re, mechanical fasteners, I was planning to glue and use Tapcons. I'm also using PT so belt and suspenders all the way around. Capillary break / PT lumber / adhesive / fasten. House is 60 years old and while there is the likelihood of some moisture in the slab, it's minimal due to interior perimeter drain tile. Actually, I might have just answered my own question and opt to go for the capillary break since parts of the plate will basically rest directly above the drain tile, thus increasing whatever minor risk of wicking there is.

1. Expert Member
   MALCOLM TAYLOR | Apr 17, 2022 01:56pm | #5

   Michael,

   Save yourself some annoyance and consider using these instead. They are a lot stronger, rated for pt lumber, and much easier to install than Tapcons. https://www.grkfasteners.com/products/caliburn-concrete-screw

1. 
   mritterjr | Apr 17, 2022 02:13pm | #6

   Yes, will look into these as I love GRKs other fasteners. Thanks for the link.

1. Expert Member
   MALCOLM TAYLOR | Apr 17, 2022 02:58pm | #7

   Michael,

   I probably sound like a shill for GRK sometimes, but I find them all great too.

3. Expert Member
   BILL WICHERS | Apr 17, 2022 01:40pm | #3

   I would go with the capillary break over glue. Capillary action might hurt you down the road, but I've never had good luck with long-term use of glue in an application like this, so I don't trust it and don't think it gains you much if anything. I'd use bolts. I'm not so sure tapcons are rated for use with pressure treated wood, and that rating usually has to do with corrosion, so you risk the tapcons rotting away due to the preservatives used in the PT wood.

   Bill

1. 
   mritterjr | Apr 17, 2022 01:50pm | #4

   Good advice, thanks Bill. I was debating between Tapcons and using a Ramset. Per their website the blue screws are rated for use in PT lumber, just FYI but good point I hadn't thought much about.