We have tested and recommend PL Premium 3X Construction Adhesive® for bonding to the InSoFast studs. Other formulas and brands may not work as expected.
Use above 40°F (4°C). Surfaces must be clean, dry and free of frost, grease, dust and other contaminants. Pre-fit all materials and protect finished surfaces. If using cartridge format, cut nozzle at a 45° angle to desired bead size and puncture inner seal. Be very careful not to allow Loctite® PL® Premium to cure on a finished surface. Cured or uncured, interior or exterior, moisture has no negative effect on PL Premium. In fact, it actually uses moisture to cure. The adhesive remains stable in all sorts of extreme freeze/thaw weather conditions.
Apply adhesive to the ribbed stud surface on the InSoFast panel/insulated stud. Press the bonding surfaces firmly together. The panels/studs may be repositioned within 30 minutes after applying the adhesive. If bonding two non-porous surfaces (such as InSoFast panel/studs, to metal or fiberglass), add water in the form of a very light or atomized spray from a plant mister bottle to the adhesive extruded on the stud, this accelerates the adhesive’s set time. When adding moisture re-positioning time is reduced. If needed use mechanical support for 24 hours while the adhesive cures. When bonding InSoFast panels/studs, avoid cure and surface temperatures above 90°F (32°C).
Testing was conducted using Loctite PL Premium’s 3X Stronger Construction Adhesive, (in Canada it is marketed under the LePage PL Premium brand,) on clean concrete surfaces. It is the only adhesive we have tested. Other formulas and brands may not work as expected.
Important read the adhesive manufacture’s information before proceeding.
Calculate the number of tubes necessary for your project (adhesive coverage may vary):
Even though the adhesive is odorless, it is important to note its strength and abilities. Always wear disposable gloves and never allow PL Premium to cure on a finished surface.
If you are unsure about the conditions of your walls, we recommend performing an adhesive test. Find a scrap 2×4 measuring at least 6 inches long and run a 3/8-inch bead of adhesive along it. Press the “test block” against the wall with one end resting on the floor to keep it from sliding down. Support it in place if necessary. You’ll need to wait 24-48 hours for the adhesive to cure, but keep in mind that PL Premium takes 14 days to reach it’s full strength.
When the curing time has passed you are ready to test the strength of the bond. Try to pry the test board off the wall. If you can manage to pull it off with your hands, you will need to mechanically fasten the panels to the wall.
When you begin your InSoFast installation, check to make sure you are using the right amount of glue. Pull back a freshly adhered panel and check for adhesive transfer to the wall. You should see about 1/4-inch wide adhesive transfer to the wall.
Do not install screws or mechanical fasteners until the adhesive has completely cured. (usually about 24hrs)
When using liquid applied WRB, panels may be applied using a compatible adhesive/base coat. See adhesive/base coat data sheet for technical data and information sheet.
If you choose to mechanically attach InSoFast panels to concrete or masonry walls, screws are to be placed 12″ o.c. along the InSoFast studs. Powder actuated tools are not recommended.