Installation Guide
 21 
RANDOM ROCK PANEL  
Step 1 
Starting from the left, take a full panel and attach the bottom tongue into the starter strip groove, 
lock in place, and slide the panel behind or against the accessory piece. Using the screw guide 
points, screw through the substrate and into a stud, when practical, with a minimum of 6 screws 
per panel and a screw no less than 1" from each end of the 
tongue as well as in the bottom right corner of the tongue. 
Working left to right continue installing panels to the bottom 
course making sure each panel is properly set in the starter 
strip. For the last panel in the course, measure from the edge of 
the grout line to the accessory piece and add 1". If installing 
behind corners, cut the last piece and slide behind or against 
the accessory piece until the panel is locked in the starter strip, 
then slide panel back to the left until the shiplap sides are joined. Check for level. 
Step 2 
Install the remaining courses by beginning the second course from the 
left using the off fall from the previous course if possible. Slide the 
panel down over the tongue of the first row. Then slide the panel left 
behind or against the trim piece and screw in place as before. Install 
remaining panels in the course, end row as before, and check for level. 
Align panels using the alignment mark at each side on the tongue. Do 
not align panels using the top of the tongue. The remaining courses are 
installed the same way. Stagger the NextStone butt joints so that no 
two courses are aligned vertically unless separated by three courses.  
All exposed edges should be behind trim pieces or painted to finish. 
Step 3 
Cut panels around fixtures and other wall protrusions (hose bibs, 
electrical boxes, dryer vents, etc) to accommodate NextStone 
Mounting Blocks. See page 25 for details on how to cut panels 
and install the mounting blocks. 
  PANEL INSTALLATION 
OPTIONAL ADHESIVE INSTALLATION 
Step 1 - Lightly sand ridges on the back of the panel to remove any mold release agent that may 
have adhered to the panel. The mold release agent will interfere with the adhesion of the panel. 
Step 2 - Apply a ⅜" bead of adhesive along vertical ridges of the panel. 
Step 3 - Remember to always use a quality adhesive and is compatible with polyurethane. See 
page 8 for manufacturer’s recommendations. In order for adhesives to set properly, mechanical 
fasteners may be required to hold panels in place. 
2  3  4  1 
1  2  3 
 4 
All products must be allowed to acclimate; removed from boxes and stored flat at the 
installation site for a minimum of 48 hours or until properly acclimated prior to 
installation. Heat and moisture cause expansion. Best results are obtained by installing 
cool, dry product. NextStone does not warrant against gapping caused by expansion 
and contraction. 










