Kohler K-9531 User manual

Installation Guide
Single Threshold Acrylic Shower Receptors
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de Mcorresponden a México
(Ej. K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-9531, K-9532, K-9533,
K-9534, K-9535, K-9536,
K-9538, K-9852, K-9858,
K-9861, K-9866
1030520-2-A

Thank You For Choosing Kohler Company
We appreciate your commitment to Kohler quality. Please take a few minutes to review this manual before
you start installation. If you encounter any installation or performance problems, please don’t hesitate to
contact us. Our phone numbers and website are listed on the back cover. Thanks again for choosing Kohler
Company.
Tools and Materials
Before You Begin
Observe all local plumbing and building codes.
Locate the rough plumbing for the drain in accordance with the roughing-in dimensions for your
particular model.
A variety of installations are possible. These instructions show suggested installation procedures,
your particular installation may require other construction techniques.
Please read these instructions carefully to familiarize yourself with the required tools, materials, and
installation sequences. Follow the sections that pertain to your particular installation. This will help
you to avoid costly mistakes.
Your shower receptor comes packaged in a single carton containing a one-piece shower receptor.
This carton will fit through any standard door. You should not remove the receptor from the
package until you are ready to install it.
Unpack and inspect the shower receptor for damage. If you find any damage, do not install the
receptor. Report the specific problem to your dealer immediately.
After inspection, return the receptor to the carton until you are ready to install it.
You must install this shower receptor to an adequately supported, level subfloor.
Be sure that you have enough access to move the receptor into the construction area.
Make sure the installation area is clean and free of all debris. If remodeling, remove all finished wall
material to expose the framing and remove all floor coverings to expose the subfloor.
Provide properly dimensioned framing.
Alcove installation is recommended for this receptor. A drop-in installation is also an option for this
receptor.
Corner or alcove installation is dependent upon the receptor model.
Plus:
• Common Woodworking
Tools and Materials
• Nails/Drywall Screws
• Drop Cloth
• 2 x 4s or 2 x 6s
• Water Resistant Wall Material
• Furring Strips
Pencil Level Sealant Plumbers
Putty
Knife
Square
Screwdriver
Drill
Safety
Glasses Tape
Measure
Claw
Hammer Pipe Wrench
1030520-2-A 2 Kohler Co.

Before You Begin (cont.)
Exact location of the end studs will depend on the thickness of the finished wall material.
If installing this unit adjacent to vertical ducts or chases, surround the unit with fire-rated
water-resistant wall material.
When fire-rated wall is specified, stud-opening dimensions are toward the exposed side of the wall
material.
Place the receptor within the installation area prior to completion of the framing.
The basin area requires no additional support when the subfloor is level and square with respect to
the framing. Consider using shims for additional support if the subfloor is uneven.
Consult all applicable instructions for options and accessories before beginning this installation.
Fixture conforms to ANSI Standard Z124.2. All dimensions are nominal. All models meet IAPMO
requirements with the exception of K-9531.
1. Prepare the Site
Ensure that the installation area is clean and free of all debris. If remodeling, remove all finished
wall material to expose the framing and remove all floor coverings to expose the subfloor.
Inspect the flooring at the installation site. Repair as necessary.
Make sure the sub and finished floors are flat and level.
Kohler Co. 3 1030520-2-A

2. Roughing-In Dimensions
ABCDE
K-9531 32″(81.3cm) 16″(40.6cm) 31-3/4″80.6cm) 15-7/8″(40.3cm) 6-1/8″(15.6cm)
K-9532 36″(91.4cm) 18″(45.7cm) 35-5/8″(90.5cm) 17-13/16″
(45.2cm) 6-1/8″(15.6cm)
K-9533 42″(106.7cm) 21″53.3cm) 41.75″(106cm) 21″(53.3cm) 6-1/8″(15.6cm)
K-9534 47-7/8″
(121.6cm) 23-15/16″ (60.8cm) 34″(86.4cm) 17″(43.2cm) 6-1/8″(15.6cm)
K-9535 60″(152.4cm) 30″(76.2cm) 34″(86.4cm) 16-7/8″(42.9cm) 6-1/8″(15.6cm)
K-9536 37-7/8″(96.2cm) 18-13/16″
(47.8cm) 37-7/8″(96.2cm) 18-13/16″ (47.8cm) 6-1/8″(15.6cm)
K-9538 42″(106.7cm) 21″(53.3cm) 34″(86.4cm) 17″(43.2cm) 6-1/8″(15.6cm)
K-9852 60″(152.4cm) 30″(76.2cm) 36″(91.4cm) 27-1/8″(68.9cm) 6-1/8″(15.6cm)
K-9858 36″(91.4cm) 8-7/8″(22.5cm) 36″(91.4cm) 27″(68.6cm) 6-1/8″(15.6cm)
K-9861 48″(121.9cm) 24″(61cm) 36″(91.4cm) 27″(68.6cm) 6-1/8″(15.6cm)
K-9866 38″(96.5cm) 21-7/8″(55.6cm) 38″(96.5cm) 18-5/8″(47.3cm) 6-1/8″(15.6cm)
IMPORTANT! All dimensions are nominal. The stud opening tolerance is plus 1/4″(6mm) and minus 0.
Carefully measure your fixture before determining enclosure size. When a fire rated wall is specified,
dimensions are to the inside of the wall board. Some shimming between the stud frame and the fixture
may be required. Dimensions given in the roughing-in information are crucial for proper installation.
Construct the framing and plumbing accurately.
NOTE: If a firewall is required, roughing-in dimensions will have to increase according to the thickness of
the firewall material. Stud opening dimensions must be measured toward the exposed side of the wall
material.
NOTE: If installing this unit to a masonry wall, make provisions for plumbing connections. Construct a
separate frame wall a minimum of 6” (15.2cm) from the masonry wall.
K-9531, K-9532, K-9533,
K-9534, K-9535, K-9538,
K-9852, K-9861, K-9858
K-9536
K-9866
Diagrams shown are representative and for use with the table only.
Your fixture may appear different from the illustrations.
B
A
C
D
FE
B
A
A
F
DC
E
1030520-2-A 4 Kohler Co.

3. Construct the Stud Framing
If you will be installing a shower door with this unit, refer to the shower door installation
instructions for any special framing considerations.
Construct 2x4 or 2x6 stud framing according to the roughing-in information for your particular
model.
Verify that the framing is square and plumb.
If grab bars are to be installed, provide 2x6 bridging or attachment at specified positions. Refer to
the grab bar manufacturer’s instructions.
The basin area requires no additional support when the subfloor is plumb and level with respect to
the stud framing. If the subfloor is not level, shimming may be required to level the unit.
Construct 2 x 4
stud framing
according to the
roughing-in
information
Position
the rough
plumbing
Verify that the
subfloor offers
adequate support,
and is flat and level
Masonry Wall
2 x 4 Stud Framing
6" (15.2cm) MIN.
Kohler Co. 5 1030520-2-A

4. Install the Plumbing
NOTE: Provide access to all plumbing connections to simplify future maintenance.
Locate rough plumbing for the drain according to the correct model’s roughing-in dimensions.
Position the plumbing according to the roughing-in information. Cap the supplies and check for
leaks.
Install a 2” (5cm) drain pipe to extend 3/8” (1cm) above the subfloor or slab. A pocket is required in
a slab construction to accommodate the drain fitting.
If possible, provide an access at the back of the plumbing wall for servicing the supply and waste
piping.
Install the shower valving according to the manufacturer’s instructions. Do not install the trim at
this time.
4-1/2" (11.4cm) D. MIN.
3/8" (1cm)
Wood Sub-Floor
2" (5cm) Drain Pipe
2" (5cm) Drain Pipe
1-1/2" (3.8cm)
MIN.
3/8" (1cm)
4-1/2" (11.4cm) D. MIN.
Concrete Sub-Floor
1030520-2-A 6 Kohler Co.

5. Install the Vinyl Tiling-in Bead
CAUTION: Risk of product damage. Do not apply the vinyl tiling-in bead or pressure-sensitive tape
in temperatures below 40°F (4.4°C).
NOTE: The K-1182 vinyl tiling-in bead is used for the corner installations of the K-9852 and K-9861 shower
receptors. There is enough vinyl tiling-in bead supplied for either receptor. Some cutting will be required.
The vinyl bead takes the place of the flange on the side(s) of the receptor and is necessary to
prevent water from seeping into the framing. The installation kit contains a 7’ (2.1 m) vinyl bead
and a 12’ (3.7 m) strip of pressure-sensitive sealing tape.
Clean the receptor rim of all dust, grease and foreign matter.
Temporarily position the tiling-in bead on the receptor to measure. Do not use the sealing tape at
this time. The bead should start 3/4” (1.9cm) back from the front corner and extend along the rim
all the way to the integral tiling-in flange at the rear of the receptor. Cut the length to fit.
Cut the same length(s) of pressure-sensitive tape, also starting from the front edge of the rim.
Apply the vinyl tiling-in bead just before moving the receptor into position.
Remove the paper backing from the pressure-sensitive tape and carefully apply the tape to the
corner radius of the receptor.
Start applying the vinyl bead 3/4” (1.9cm) back from the front corner. Press the bead firmly against
the sealing tape for proper sealing.
Repeat procedure working toward the opposite end.
After the bead is in place, start at the area where the bead was first applied and rub firmly with the
heel of your hand to ensure a continuous seal.
6. Prepare the Receptor
CAUTION: Risk of product or property damage. If a watertight seal on the drain is not obtained,
water damage to the receptor bottom and the subfloor may occur.
Install the drain to the shower receptor according to the drain manufacturer’s instructions.
Clean the receptor to reduce the risk of surface damage.
Place a clean drop cloth or other similar material into the bottom of the receptor. Be careful not to
scratch the surface of the unit.
Unfinished Wall
Vinyl Tiling-In
Bead
Water-Resistant
Sealer
Water-Resistant
Wall Material
Finished Wall
Pressure-Sensitive
Tape
Sub-Floor
Receptor Rim
Kohler Co. 7 1030520-2-A

7. Position the Receptor
Move the receptor into position. Verify proper fit.
Fit the drain into the trap. Do not connect the trap at this time.
CAUTION: Risk of product damage. If shimming is required, shim between the subfloor or slab and
the wood block feet on the underside of the receptor. All wood block feet must be supported when the
receptor is leveled and nailed to the framing.
Check that the receptor is level in both directions and resting on all feet. Shim if necessary.
Concrete, gypsum cement or other similar materials can be used to level the base.
1030520-2-A 8 Kohler Co.

8. Secure the Receptor to the Stud Framing
CAUTION: Risk of property damage. Make sure a watertight seal exists on all drain connections.
Drill 1/8” (3mm) pilot holes through the nailing–in flange at each stud location. If needed, shim
between the nailing-in flange and the studs to prevent cracking the flange when drilling.
Complete the drain installation according to the instructions packed with the drain.
Open the water supplies and check all the connections for leaks.
Run water into the receptor and check the drain connections for leaks.
Use #6 large-head galvanized nails or screws to secure the nailing-in flange to the studs.
Nail 1/8” (3mm) thick furring strips to the studs to shim out to the edge of the nailing-in flange.
Stud
Drill a small
hole through the
nailing-in flange
at each stud
Use #6 large-head
galvanized nails or
screws to secure
the nailing-in flange
to the studs
Furring Strip
Nailing-In Flange
Stud
Kohler Co. 9 1030520-2-A

9. Complete the Installation
Apply silicone sealant to the upper portion of the nailing-in flange/vinyl bead where it will meet
the water-resistant wall material.
Cover the framing, walls and nailing-in flange with water-resistant wall material.
Install the water-resistant wall material to the framing with the paperbound edge a maximum of
1/4” (6mm) above the finished concave surface of the receptor.
Tape and mud the wall material.
Install the finished wall. Seal the joints between the receptor rim and the finished wall with silicone
sealant. RTV (Room Temperature Vulcanizing) sealant is recommended.
Seal around the valving and outlets with silicone sealant or plumbers putty.
Install the faucet and drain trim according to the manufacturer’s instructions.
If used, install the grab bars or towel bars to the backing in the stud wall (previously installed).
Follow the manufacturer’s installation instructions.
If used, install the shower door according to the manufacturer’s instructions.
Install the finished floor. Apply silicone sealant along the front edge of the receptor where it meets
the floor.
10. Clean-Up
CAUTION: Risk of product damage. Do not allow cleaners containing petroleum distillates to remain
in contact with module surfaces for any length of time.
CAUTION: Risk of product damage. Do not use abrasive cleaners.
When cleaning up after installation, use warm water and an approved liquid cleanser to clean the
surface.
Stubborn stains, paint or tar can be removed with turpentine or paint thinner.
Plaster can be removed by scraping with a wood edge. Do not use metal scrapers, wire brushes, or
other metal tools. Use warm water and an approved liquid cleanser to provide mild abrasive action
to remove residual plaster.
1/2" (1.3cm)
Water-Resistant
Wall Material
Edge
(Paperboard)
Down
Concave Surface
1/4" (6mm)
2 x 4 Framing
1/8" (3mm)
Furring
Galvanized
Nail
Water Resistant Sealer Between Nailing-in Flange And
Paperbound Edge Of Water-Resistant Wall Material
1030520-2-A 10 Kohler Co.