Installation Guide
Some installaons may require a new negave shiplap edge to 
be cut into a piece. This can be done with a table saw, router or 
router table, or if neither are available, a circular saw preferably 
with a guide. Use a panel to determine the height (on the table 
saw) or depth (with a circular saw) to set the blade. This should 
be equal to the horizontal cut of the shiplap edge (approximately 
1”). Once the blade is set, make the cut, then reset the height or 
depth to match the depth cut of the shiplap edge (approximately 
1/2”) eecvely cung a rectangle of material out of the corner. 
A router or router table can also be used to remove this material 
leaving the new negave shiplap edge.
The screw used for shoong through the ledger will be 
longer than the screws used for panel installaons in order 
to provide good bite into the substrate. We recommend 
2.5” screws. To install a piece of ledger, apply adhesive to 
the back of the ledger and to the top of the posive shiplap 
edge of the panel that is already aached to the substrate. 
Then t the negave shiplap edge of the ledger down 
onto the posive edge of the panel. Proceed by placing 
screws at an angle through the face of the ledger at both 
ends, countersinking the screw 1/8”. Connue by shoong 
the longer screws in the center of the ledger through the 
face, countersinking 1/8”. Once installaon is complete, 
GenStone Color Matched Caulking should be used to cover 
any line between ledgers and to ll all screw holes. Use 
GenStone Color Matched Touch-Up Paint to blend colors.
Measure the gap from le to right. Measure from grey to 
grey. Do not measure the ngers. This represents the overall 
panel length that should be cut. When cung a panel to t, 
you will want to use the factory edges on each of the end and 
cut what needs to be removed from the middle of the panel. 
Be sure when making your cut to cut in a place that will be 
cung through the bricks not the mortar. Mark your panel on 
the back side and cut to size. Once you have your panel cut 
down to the correct lengths, install to you substrate. Paint all 
exposed foam with GenStone Color Matched Touch-Up Paint. 
Install as previously directed.
NEGATIVE SHIPLAP EDGES
LEDGERS
FITTING PIECES TO FILL IN THE GAPS










