Installation Guide

FlexStoneProducts.com - 4 - 5/18
Install Instructions
1 INSTALLATION OF INSIDE CORNER REINFORCEMENTS (J).
1.1) Flashing Tape Corner Reinforcements go behind
the panels in the back vertical corners for added
leak protection. This tape has been cut to length,
matching the height of the panels of your kit.
1.2) Apply a generous bead of adhesive onto both walls
about 3/4 inch away from the corner. Fold the
flashing tape at the center crease with the print
side together, then press the tape into the corner
using a taping or putty type blade. Using the same
blade, flatten out the tape to create a flat, smooth
inside corner. Wipe away any excess adhesive.
2 INSTALLATION OF BACK WALL PANELS (A).
NOTE: It is not necessary to cut the top edges of panels to be level,
as they will be covered by trim moldings.
2.1) The back panel must be fit to both the left and
right corners, and to the tub or shower base.
Keep in mind that walls may not be square or
plumb, so you will want to measure width of the
alcove at both the bottom and top of the alcove
prior to trimming panel. (See TIP on right for a
technique for achieving good fit measurements.)
Trim the panel to size with a utility knife, jigsaw,
or power plane and dry fit until a tight fit is
achieved.
2.2) When satisfied with the fit, peel protective
masking back from the edges of the panel
(approx. 4”) and clean burs from any rough
edges. Generously apply Performance Pro
Adhesive in lines or blobs to the back of the
panels in a pattern every 3 to 4 inches. Use
approximately one 10oz tube per 8 square feet
following any adhesive directions on tube. Push
the panels in place, lightly pounding to achieve
good bond.
TIP: Draw a vertical plumb line directly on the middle of the
sheetrock from top to bottom of wall. Now draw a horizontal level
line crossing the plumb line about halfway up the wall. Record
measurements left from the vertical line to corner at top, middle and
bottom (L1, L2, L3), then right from the vertical line to corner (R1,
R2, R3.) Now record measurements down from the horizontal line
to the tub (D1, D2, D3.) Transfer these measurements to your back
wall panel (A). These 9 measurements will account for out of plumb
walls AND out of level tubs!