- Tub or shower unit should be on the job site during the early stage of framing.
Studs may be temporarily omitted to allow unit to be moved into place.
Rough-in drains should be located according to the line drawings for that particular
unit. When measuring the tub or shower unit to obtain these measurements, be sure
to use the top of the unit for the overall depth and width of the unit. Please note
that most units have slanted backs and sides, but the front of the unit should always
be installed vertically plumb.
- Prior to installation, check to be sure the framed-in
area is proper size, square, and plumb.
- If a one hour fire wall is required,
contact the factory for recommended method of installation. A one hour fire wall
can normally be obtained by placing 5/8" dry wall on the studs prior to the installation
of the unit.
- A code approved drain outlet should be used. Be sure to use silicone
or plumber's putty between the chrome flange and the finished side of the tub/shower.
On the back of the unit, lay out accurately the location of the holes for supply
and mixing valves. Shower head may be located either through wall of unit or in
wall above. From the back of the unit, drill a pilot hole (1/4" or less) at location
markings for fittings (Figure 2). From the face of the unit, drill or cut these
holes to required size. Use a hole saw of the proper size (Figure 3). For shower
units, move the unit into framed area by tipping the unit toward the installer and
push until the waste pipe is directly under the drain outlet, then tip the shower
upright into the framed area.
- After unit is positioned into framed area, check
level of shower or tub/shower and be sure apron is down tight to the floor.
Spot secure the flanges, top and bottom, while continuously checking to see that
the unit is level and that the side walls are plumb.
- Using No. 8 screws, fasten
the top flanges to each stud and then fasten the side flanges approximately 8" on
- Install plumbing hardware in keeping with good plumbing practice and
in compliance to local code requirements.
- If a dry wall finish is to be used,
place dry wall over fastening flange, screw dry wall and tub flange into studs,
mud tape and finish. If plaster is used, screw lath over fastening flange and finish
plaster to bead (Figure 4).
- Towel bars and special grab bars may be bolted or
screwed into the tub unit, with the use of a wood strip or block on the back side
of the unit prior to installation. Care should be taken when installing grab bars
so that all applicable codes and requirements are followed.
Upon finishing construction, the unit can be cleaned with warm water and
detergents. Roofing tar and paints can be easily removed without damage to the
unit by the use of turpentine, paint thinner, or acetone.