Architectural Specifications for Rubber Flooring & Stair Treads
Scope of Work
This work consists of furnishing all labor, materials, tools, equipment, and service necessary to satisfactorily complete the rubber flooring and/or rubber stair treads shown on drawings or in finish schedule.
Resistance to Dynamic or Rolling Loads
Care must be taken to prevent damage to rubber flooring by wheeled vehicles and furniture or appliances with casters.
To reduce rolling resistance and minimize risk of cutting, indenting, or grooving the rubber flooring, the proper wheels and casters should be selected to carry a load of not more than 150 pounds per square inch (10.6kg per cm2). Since rollers, casters, and wheels on furniture and appliances may damage resilient flooring, any warranty as to their suitability lies with the furniture or appliance manufacturer.
Floor protectors should be chosen so that stationary loads do not exceed 150 pounds per square inch (10.6kg/cm2).
At room temperature, the rubber flooring shall
bend around a 3/4" (19 mm) mandrel without breaking, crazing,
cracking, or showing any change in color.
Rubber Stair Treads meet requirements of ADA.
Flexi-Flor® Sheet Rubber meets ASTM F1859 standard specification for sheet rubber without backing.
Rubber Tiles meet ASTM F1344 standard specification for rubber floor tile.
Rubber and Vinyl Stair Treads meet ASTM F2169 standard specification for resilient stair treads.
VI Series Stair Treads meet California Standard Code Title 24 for the Visually Impaired.
None of the products contains ozone-depleting
chemicals (ODC’s) nor are they produced using ODC-containing
The room and material temperature should be 70°F (21°C) 48 hours prior to, during and after installation. (“Temporary” HVAC
is not acceptable. Systems should be fully functional prior to any
resilient flooring installation.) The sub-floors which are to receive
rubber flooring shall be smooth, clean, and dry and shall be inspected,
approved, and accepted as satisfactory by the sub-contractor for resilient
flooring before installing this material. (When rubber flooring is
to be installed over a wood sub-floor treated with fire retardants
or a metal sub-floor, contact us for recommendations.)
For on-grade installations where there is a possibility
of moisture being present, it is recommended that The R.C.A. Rubber
Company’s #5 Epoxy Flooring Adhesive be used. Moisture transmission
should not exceed three pounds per thousand square feet per twenty-four
hours. Where excessive moisture exists, we do not recommend the installation
of our Rubber Flooring products. We do not recommend that our Sheet
Rubber or Rubber Tile Flooring be installed in the following: below
grade, commercial kitchens, chemistry or biology laboratories, exterior
installations or over existing installations of floor coverings.
A. Flexi-Flor® Sheet Rubber Flooring as herein
specified or shown on the drawings shall be Flexi-Flor
1/8" (3.2mm), or 3/16" (4.8mm)) gauge as manufactured by
The R.C.A. Rubber Company or Akron, Ohio. (Note: 3/16" Flexi-Flor
is recommended for use on stair landings in conjunction with heavy-duty
stair treads, not for most floor areas. 3/16" material will
be supplied on a "mill run" basis)
Sheet Rubber Flooring shall be first quality in
standard 39" (.99m) wide rolls, fully homogeneous and uniform
through the sheet, and comply with the requirements of
ASTM F1859 and shall contain no asbestos fibers. Rolls may contain
2 pieces, the shortest piece being at least 5 lineal yards. (Note:
3/16" flooring supplied "mill run" only)
B. Flexi-Flor® Rubber Tile Flooring as herein specified
or shown on drawings shall be Flexi-Flor (3/32" (2.4mm), 1/8" (3.2mm), or 3/16" (4.8mm)
gauge as manufactured by The R.C.A. Rubber Company of Akron, Ohio.
Rubber Tire Flooring shall be first quality 12" x 12" (305mm
x 305mm) size, fully homogeneous and uniform throughout and comply
with the requirements of ASTM F1344, and shall
contain no asbestos fibers.
Finishes / Colors
The coloring matter shall be of good quality, insoluble in water, and resistant to alkali, cleaning agents and light.
For all Rubber Flooring products shown herein
(Flexi-Flor Sheet Rubber or Tile, Target® Tile, Lo-Pro® Tile,
and Design Surface Tile) include the following:
"RUBBER FLOORING IS SIMILAR TO PRODUCTS OF NATURE AND THEREFORE, WILL HAVE
VARIATIONS IN COLOR, TONE, AND MOTTLE."
Colors 608 and 707 are available "mill run" only.
C. Molded Rubber Stair Treads shall be as manufactured by The R.C.A. Rubber Company, Akron, Ohio, of the type herein specified (specify style number) for the stairs listed below or where shown on the drawings. All treads, risers, landings, and floors shall be installed in accordance with the manufacturer's instructions.
The Stair Treads shall have a minimum of 80% of the back and the nose (square nose) sanded by the manufacturer to help assure proper adhesion and installation.
The treads shall be (specify style number, type, thickness and nosing) in colors to be selected by the architect. Rubber treads shall comply with ASTM F2169.
When specifying Rubber Treads with Adjust-A-Nose
feature, include: A channel shall be molded into the nose allowing
adjustments to the angle of the nose to conform to returns required
by "Access Codes."
When specifying Target Stair Treads, include: Stair Treads shall be (#90, #490, or #590VI) Target Stair Treads as manufactured by The R.C.A. Rubber Company of Akron, Ohio.
When specifying Target Stair Treads, include: Stair Treads shall
be (#90, #490, or #590VI) Target Treads as manufactured by The R.C.A.
Rubber Company of Akron, Ohio, and shall have a Flame Spread Rating
of 25 or less when tested in accordance with ASTM E64. Stair Treads
shall be installed using The R.C.A. Rubber Company’s #5 Epoxy
Adhesive and #10 Epoxy Nosing Caulk. Optional: Molded Rubber Risers
in matching or contrasting colors as selected by the architect shall
be installed to set on top of the Rubber Tread.
Sub-Floor Preparation for Rubber Flooring and Stair Treads
Just prior to the installation of the resilient flooring,
the sub-floor should be broom swept and damp mopped and allowed
Prepare concrete in accordance with ASTM F710.
Concrete should be troweled to a smooth, even surface
and be aged for at least 90 days. Expansion joints should
be properly filled. Neutralize the surface of the concrete.
Use 1 part
white vinegar and 5 parts water to make a good neutralizing
agent. Solution should remain on floor for at least one hour
then flushed thoroughly with water. Allow to dry thoroughly
(minimum 48 hours at 70°F). Concrete should
be sound, hard and free from scale or other imperfections and
thoroughly dry when installation is made. CAUTION; cinder fill,
vermiculite, pumice, and other aggregates, which are hygroscopic
in nature, cause the concrete to be very slow drying. This type
of concrete will easily absorb excessive moisture from the atmosphere
and other sources. Any concrete curing compound must be completely
A solid core, exterior grade plywood with one
side sanded is recommended. Lauan, Particle Board, Chip Board
or Hard Board should not be used as underlayment. Be sure wood
sub-floor is thoroughly nailed or otherwise securely fastened
to the substrate. If the wood sub-floor is uneven, it should
be sanded smooth. The dust from the sanding operation should
be removed by vacuuming.
It is recommended that floor patching or leveling
compounds are to be non-gypsum based.
Installation recommendations for Rubber Flooring and Stair Treads
General Installation Considerations
The rubber flooring shall be installed in a neat
and professional manner with tight seams or joints,
and with an adhesive appropriate for the installation. For most
installations, The R.C.A. Rubber Company’s #56 Latex Adhesive is appropriate. The R.C.A. Rubber Company’s #5 Epoxy Adhesive MUST be used for installations of Target® Tile
and Stair Treads.
It is recommended that all flooring materials be dry laid and inspected
to detect any possible abnormalities before beginning installation.
It is recommended that flat wheels with no ridge(s) be used on rolling
Immediately after installation, the rubber flooring shall be thoroughly rolled
in both directions with a 100-150 pound (46-68kg) sectional roller. It may be
necessary to weight the seam until a suitable bond has been established.
The R.C.A. Rubber Company’s #5 Epoxy Flooring Adhesive MUST be used in
Hospital Operating Suites.
Flexi-Flor® Sheet Rubber Flooring Installations
Overlap edges of sheet rubber so that all seams can be double cut to assure a
better appearance. Underscribing is not an acceptable installation method.
When flashing the rubber flooring up the wall to base height, a
rubber fillet strip as manufactured by The R.C.A. Rubber Company
shall be installed where the floor and wall meet, properly adhered.
The top edge of the flashed rubber shall be fitted to a metal cap
or other suitable trim. The flashed rubber shall be securely adhered
to the fillet strip and the wall. (Where specified or indicated
on the drawing, metal caps, end-stops and corners shall be manufactured
by the B&T Metals Company of Columbus, Ohio.)
Optional Chemical Seam Bonding
After dry cutting and fitting the Flexi-Flor
Sheet Rubber Flooring, a 4" to 6" (10cm
to 15cm) wide band of The R.C.A. Rubber Company’s
#5 Epoxy Flooring Adhesive is applied at
the seam and field cuts. At the same time,
The R.C.A. Rubber Company’s #56 Latex
Adhesive is spread in the field areas. The
Flexi-Flor should then be placed into the
adhesive and rolled with a 100-150 pound
(46-68kg) roller. To assure proper bonding,
a hand roller should be used at the seams
to force the adhesive into the seam and create
a chemical bond. Follow adhesive label directions.
Clean up excess adhesive immediately. It
may be necessary to weight the seams until
a suitable bond has been established.
Stair Tread Installation
The surface of the steps, risers, landings,
and sub-floors should be sound, clean, free of foreign matter and
dry. Moisture transmission should not exceed 3 pounds per thousand
square feet per twenty-four hours. Wooden steps shall be thoroughly
nailed before installation of treads. The surface of the concrete
in metal pan-filled stairs shall be troweled smooth with no ridges
and level with the top of the pan. The treads and risers shall be
carefully fitted in a neat and professional manner, securely bonded
with the appropriate adhesive. (#5 Epoxy Adhesive MUST be used
on all Target stair treads. Neoprene Contact Adhesive MUST be used
on all Vinyl stair treads. For most other tread installations, #56
Latex Adhesive is appropriate.) The nose of the stair tread
shall fit tightly against, and be securely bonded to, the face of
the stair riser or nosing. Open spaces at the nosing between
the step and the stair tread shall be filled with The R.C.A. Rubber
Company’s #10 Epoxy Stair Caulk.
All stairs and risers shall be thoroughly rolled
until a suitable bond has been established. (Abrasive strip
stair treads should be installed with a 1/16" (10mm) gap at
each end of the stair tread to prevent loosening of the abrasive