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Stone and Stucco

InSoFast panels are ideally suited as a drain and dry insulation board for use under traditional stucco and thin-veneer stone applications. The panels utilize tongue and groove edges to provide a smooth continuous insulation substrate and include built-in studs for lath attachment. The InSoFast panel has drainage channels which are flashed to drain bulk water.

Attaching Intersecting Walls to InSoFast Panels

Install all of the InSoFast panels around the perimeter walls before building interior partition walls. Butt intersecting wall stud up to the InSoFast panels. Apply a bead of construction adhesive to the backside of the stud where it will come in contact with the InSoFast panels. Note your stud is fastened at the bottom plate

Installing Drywall

Drywall can be installed over InSoFast panels in the same exact way it is installed over traditional wood framing. Simply attach drywall to the InSoFast studs using all-purpose drywall screws. You should nail base and trim boards into the studs using trim nailer or hand nails. Important: InSoFast panels, like all rigid foam insulation boards,

Exterior Windows, Doors and Openings

In order to ensure attachment for siding and trim, you should frame all windows, doors, and corners to meet the thickness of your InSoFast panel. The EX 2.5 panel is 2½” thick. There are many ways to accomplish this task. Example with 2×6 Framing Here, the contractor chose to install a 1″ thick extruded insulation

Interior Windows, Doors and Openings

Frame all openings to ensure there is a sturdy attachment surface for drywall or trim in case the InSoFast studs do not perfectly meet the edges. Important: EX 2.5 panels are easier to frame than UX 2.0 panels because they are the same depth as commonly available framing lumber. UX 2.0 panels will require additional

Turning Corners

We recommend starting an InSoFast project on an inside corner Important: some steps of this process will involve applying adhesive directly to a panel’s foam surface. We strongly recommend using PL Premium 3X Stronger Construction Adhesive for this purpose. This glue has been tested to work with the EPS foam. Inside Corners Corners that form

Using Screws & Fasteners

Mechanical attachment may be the primary method for securing the InSoFast panels to the wall surface if the concrete conditions do not allow adhesive usage. Use Tapcon® screws or Perma-grip nails in the center recessed attachment point on each stud, for a total of three screws per panel for interior drywall applications. Adhered stone applications

Recommended Adhesive Attachment

InSoFast panels were designed with simplicity in mind and we would argue that gluing them is not only the easiest method of installation but often the most effective. Third-party testing has shown the adhesive bond strength of our studs to have 108psi of holding power. This means each adhered panel is capable of holding over

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