Installation Instructions
Required Tools
Helpful Tools
FlexStone offers an installation kit that includes eight cartridges 
of Performance Pro Adhesive and two cartridges of Performance 
Pro Color-Tinted 100% Silicone. Select retailers include this in 
FlexStone kits, while others offer it for purchase separately.
Installation Kit
Consult your local building codes with questions on installation compliance standards. 
Building and plumbing codes may vary by location, and FlexStone Bath Systems is not 
responsible for code compliance standards for your project.
Before Starting
1.  The FlexStone wall system is designed to be installed over a solid substrate such as green board, 
cement board, or other water resistant backers. Substrate should be clean, dry, and free of dust or 
loose paint. Unless using our Remodel Trim Kit, any existing surround material should be removed.
2.  The Remodel Trim Kit (sold separately) allows FlexStone to be used over existing tile. Tile should 
be in good shape, and wall surfaces should be at (i.e. remove any accessories that would interfere 
with the FlexStone panels.) The 4 pieces of 96" length would replace Items C, D, E, F, and G. Follow 
instructions included with Remodel Trim Kit.
3.  If installing a new bathtub or shower base prior to FlexStone installation, follow the manufacturer’s 
instructions, and install the tub or base level and square to walls. 
4.  Turn o the water supply and complete any plumbing modications prior to installing your FlexStone 
surround. Leave plumbing handles o until surround is installed. Plan the placement of the shower 
head such that it is either above the height of the wall panels or at least 2" below the top of the wall 
panels. This will keep the trim moldings from interfering with the pipe and escutcheon plate.
5.  Review Section 6 and decide how the vertical trim moldings will be installed, either outside the 
shower base, or on top of the base threshold. This will impact the width of the side wall panels in 
Section 3.
x 2
100% Silicone
x 8
Construction 
Adhesive
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V.1 - 3/18/2019








