Dimple membrane and extruded polystyrene
I’m in the process of insulating my basement on the path to finishing it for more livable space. I have an interior basement drain that leads to a sump pit, and with having the drain I have about a 1/2 gap between my basement floor and the foundation wall. Due to this gap I’m installing Superseal Dimple Membrane (http://www.superseal.ca/all_in_one_subfloor.html) on the walls to divert any moisture that may come through the wall directly into the drain. I have installed the dimple membrane using Hammer Drive Pin Anchors (https://www.menards.com/main/tools-hardware/fasteners-fastener-accessories/anchors/hammer-drive-pin-anchors/tools-hardware/fasteners-fastener-accessories/anchors/hammer-drive-pin-anchors/red-head-reg-1-4-x-1-1-2-steel-hammer-drive-pin-anchor-50-count/35303/p-1444436195276-c-8715.htm?tid=-2141720201970077529&ipos=10 ). My main question is: Can I use a PL Foamboard adhesive to attach the 2″ Extruded Polystyrene to the Dimple Membrane or what would be the best practice for that assembly? Thanks
-Brent
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Replies
Brent,
If I were you, I would use mechanical fasteners with large insulation washers. For more information, see this article: "Fasteners for Concrete and Brick."
You could try the adhesive, but be warned that many/most adhesives won't adhere to polyethylene at all. You'll be better off using mechanical fasteners as Martin suggested. I like the Hilti PMF system which is made for this purpose. It's fast, easy, and not too expensive.
Bill
I have found most polyurethane constuction adhesives do not eat foam, and grab better than the blue foam adhesive
Ditto on the nothing sticks to polyethylene tho...