Replies

1. 
   florida | Apr 23, 2022 03:18pm | #1

   I'd use stainless ring shank 8# nails or if time is not a factor you could screw it down. I'd want something tougher than plastic though. I would think that a self-adhering membrane that would seal around nails would be more desirable but I know almost nothing about basements. I did find this, and several more, doing a quick search.

   https://www.wrmeadows.com/mel-rol-waterproofing-membrane/

   I've never used it but I think it would be time well spent to find out more.

1. 
   jonc53 | Apr 23, 2022 03:46pm | #2

   Thanks Florida,
   To be clear, the 6 mil plastic goes down first, then the sleepers and rigid foam. I'll do the research you suggest.

2. 
   unclemike42 | Apr 24, 2022 07:29am | #3

   You might consider a full layer of foam, topped by two layers of floor decking with staggered joints.

   https://www.finehomebuilding.com/2010/03/11/finishing-a-basement-floor

   and links from there will inform you on the alternative.

1. 
   patrick1 | May 03, 2022 09:50pm | #5

   I used this idea for my basement, with a few modifications: Dorkin Delta-FL under the foam to allow any vapor coming up from the slab to dry and slowly diffuse into the interior air. High compressive strength XPS foam and only 1 layer of OSB, attached with tapcons to the slab.

   The setup is super strong. We have a full gym in the basement and I haven't detected any issues with spongy floors, squeaking, or denting due to point loads of my treadmill.

3. 
   tfarwell | Apr 29, 2022 10:36pm | #4

   I agree with above: SS Ring Shank Nails. Use a coil gun if possible.

1. 
   Tim_William | May 04, 2022 01:43pm | #6

   Is a coil gun preferable to a framing gun shooting 2" nails? 2" is the minimum my framing nailer can handle, which overlaps with longer roofing/siding nails