Installation Guide
Install Instructions
1.  Installation of Inside Corner Reinforcements (J)
A.  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. 
B.  Apply a bead of adhesive onto both walls about 3/4 inch 
away from the corner. Fold the ashing 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, atten out the tape to create a at, smooth inside cor-
ner. Wipe away any excess adhesive.
2.  Installation of Back Wall Panels (A)
A.  The back panel must be t 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 t until a tight t 
is achieved. 
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!
B.  When satised with the t, peel protective masking back 
from the edges of the panel (approx. 4") and clean burs from any 
rough edges. Apply adhesive in lines or dollops to the back of 
the panel in a pattern every 4 to 6 inches. Use approximately 
one 10oz tube per 12 square feet following the adhesive 
directions on the tube. Push the panel in place, lightly 
pounding to achieve good bond.
NOTE: It is not necessary to cut the top edges of panels to be level, 
as they will be covered by trim moldings.
– 3 – 
L1
L2
L3
R1
R2
R3
D1 D2 D3
Vertical Plumb Line
V.4 03/2022








