Installation Guide
 FlexStoneProducts.com  - 7 -         5/18 
7 INSTALLATION OF SIDE WALL TRIMS (C, D, E, F). 
Note: Vertical trim moldings are designed to be installed  either: 1) 
resting  on  top  of  the  shower  base  threshold,  or  2)  outside  the 
threshold and running down to the floor. Depending on the size of 
your alcove opening, you may even choose to contour cut the trim 
moldings to overlap the threshold partially. 
7.1) Place horizontal left wall top mitered trim (Item D) 
in  place, push into  the  corner against  back wall 
trim piece, then level it. Mark a level line on the 
wall on the top side of the molding near the outer 
end. Set aside this trim piece. 
7.2) Measure from the floor to the level mark made in 
7.1 to determine the length needed for the vertical 
trim piece (Item C). Cut vertical trim piece (C) to 
this length, 
but do not cut from the pre-mitered 
end!
7.3) Fit vertical  trim  piece  (C)  over  panel  and  plumb 
using  a level. If contour cutting  this molding to 
match the shower base shape, do so now. You can 
scribe the  contour with a  compass,  or by hand, 
and  cut  with  a  jig  saw or  utility  knife.    For  tub 
installations, the back side of the molding will not 
be supported by panel material in the contour cut 
region outside the tub.  Use a piece of cutoff scrap 
as a filler behind this area of the molding.  Peel 
away  protective  masking  from  the trim, apply 
adhesive  and  adhere  molding  to  panel.  Secure 
with masking tape as in Step 6.3. 
7.4) Measure  horizontal  distance  from  back  wall 
molding  piece  to the tip of miter  on  the vertical 
molding. Cut horizontal top trim molding (Item D) 
to this dimension by cutting off the end opposite 
the miter. Be sure not to cut the mitered end. 
7.5) Dry fit the molding (D) in place for a tight fit.  Peel 
away  protective  masking  from  the  trim,  apply 
adhesive  on  the  backside  of  the  molding  and 
adhere  to  the  wall  as  before.  Make  any  minor 
adjustments necessary to ensure that the mitered 
end makes a tight joint. 
7.6) Repeat 7.1-7.5 for the opposite wall trims (E, F). 
Vertical trims contour cut to overlap threshold 
Vertical trims installed outside shower base 










