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. Cure time is dependent on temperature and humidity. Ensure sufficient time for the adhesive to set and cure before attaching exterior finishes or use mechanical fasteners. PL Premium 3X is freeze-thaw stable but it does not cure during freezing temperatures. On the back of the panel, apply a 3/8″ bead of PL Premium 3X along the dove-tailed ribbing of each InSoFast stud. Rougher or uneven surfaces may require a thicker bead. Press panels firmly into place against the wall. On windy days, the panels may need supplemental bracing or mechanical attachment to secure the panels until the adhesive has set.
When using liquid applied WRB, panels may be applied using a compatible adhesive/base coat. See adhesive/base coat data sheet and www.InSoFast.com 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.