Replies

1. GBA Editor
   Kiley Jacques | Apr 07, 2022 09:58am | #1

   Hi Joe,

   Read this thread: Fastening Rigid Foam: Glue vs. Fasteners. Martin Holladay, Mike Maines, and others share their ideas on best practices.

2. Expert Member
   BILL WICHERS | Apr 07, 2022 10:20am | #2

   With faced EPS, adhesive will probably work reasonably well. Try Loctite's Foamboard adhesive in their PL line. If you were using low-density unfaced EPS, then I'd recommend against adhesive since low-density EPS tends to pull apart too easily.

   Personally, I like the drive-in plastic fasteners Hilti makes for this purpose. You just drill all the way through the foam board and the masonry, then pop in one of these plastic anchors and give it a few whacks with a mallet. It's fast, and it's easy. I couldn't find a quick link to the Hilti fasteners, but these ones on Amazon are the same basic design:
   https://www.amazon.com/Plastic-Masonry-Fastener-250-pcs/dp/B00IMG3L4G/ref=sr_1_14?crid=125JZRKJK9W8X&keywords=insulation+fasteners&qid=1649341198&sprefix=insulation+fasteners%2Caps%2C77&sr=8-14

   Bill

1. 
   JC72 | Apr 07, 2022 03:12pm | #3

   Ta-da!

   https://www.hilti.com/c/CLS_FASTENER_7135/CLS_INSULATION_FASTENERS_7135/CLS_BASEMENT_PERIMETER_INSULATION_7135/r217

3. 
   joenorm | Apr 07, 2022 07:28pm | #4

   Thanks! I've never seen those fasteners. Just the right thing for the job.

4. Expert Member
   Akos | Apr 07, 2022 08:57pm | #5

   Search for "PMF anchors". Your local friendly EIFS supplier will sell them to your for a fraction of the cost of the Hilti stuff.

1. 
   JC72 | Apr 08, 2022 03:14pm | #6

   https://insulation4us.com/products/plasti-grip-pmf-anchor-all-lengths?variant=32339378536497