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Historic Preservation - Technical Procedures
Replacing Cracked Or Missing Asphalt Tiles
National Capitol Region Specifications - Switzer Building
Resilient Tile Flooring
Replacing Cracked Or Missing Asphalt Tiles
REPLACING CRACKED OR MISSING ASPHALT TILES
A. This procedure includes guidance on the replacement of
all cracked, broken, worn, curled or missing asphalt
tiles with new to match existing. This includes the
removal of cementitious patching materials. This
procedure may also be used for the installation of a new
asphalt tile floor to match the original design and
B. Asphalt tiles are very hard, resilient floor tiles,
composed of asbestos fibers, finely ground limestone
fillers, mineral pigments and asphaltic or resinous
binders. The tiles are generally set in a mastic over a
wood or concrete subfloor.
C. See 01100-07-S for general project guidelines to be
reviewed along with this procedure. These guidelines
cover the following sections:
1. Safety Precautions
2. Historic Structures Precautions
4. Quality Assurance
5. Delivery, Storage and Handling
6. Project/Site Conditions
7. Sequencing and Scheduling
8. General Protection (Surface and Surrounding)
These guidelines should be reviewed prior to performing
this procedure and should be followed, when applicable,
along with recommendations from the Regional Historic
Preservation Officer (RHPO).
A. Product Data: Submit manufacturer's technical data for
each type of synthetic flexible composite flooring and
B. Samples for Initial Selection Purposes: Submit
manufacturer's standard color charts in form of actual
sections of synthetic flexible composite flooring,
including accessories, showing full range of colors and
patterns available for each type of synthetic flexible
composite flooring required.
C. Samples for Verification Purposes: Submit the following
samples of each type, color and pattern of synthetic
flexible composite flooring required, showing full range
of color and pattern variations.
1. Full size tile samples.
2. Other materials as requested.
D. Certification for Fire Test Performance: Submit
certification from an independent testing laboratory
acceptable to authorities having jurisdiction that
synthetic flexible composite flooring complies with fire
test performance requirements.
E. Maintenance Instructions: Submit two copies of your
manufacturer's recommended maintenance practices for each
type of synthetic flexible composite flooring and
F. Work Description: Prior to commencing the work,
Contractor shall submit to the Contracting Officer's
representative a written description of the entire
methods and procedures proposed for all the work to be
carried out including, but not limited to, preparation of
substrate, cutting out existing tiles, replacement,
installation of new tiles and cleaning of existing tiles.
G. Methods of Protection: Prior to commencing cleaning
operations, the Contractor shall submit to the
Contracting Officer's representative for review a written
description of proposed materials and methods of
protection for preventing damage to adjacent materials
and the building interior during the cleaning and
replacement of the asphalt tiles.
1.03 QUALITY ASSURANCE
A. The general objective of the installation of new asphalt
tile is to recreate the original design intent of the
primary historic spaces. Reference original design
drawings, historical photographs and/or physical evidence
for the installation patterns.
B. The general objective for replacement of asphalt floor
tiles is to match the existing floor color, pattern and
the existing floor tiles, and all other respects so that
the new floor tiles are not visible in the overall view
of the floors.
C. The general objectives for cleaning the asphalt tile
floor are to remove dirt, grime and protective coatings
from the surface without damaging the underlying
material, and to give all the flooring a clean uniform
D. Contractor: The work of this section shall be performed
by an installer who is certified in writing by the
asphalt tile manufacturer as qualified to complete the
scope of work described. Work in this section shall be
performed by a Contractor possessing a minimum of three
(3) years of specialized experience in the installation
of synthetic flexible composite flooring. The Contractor
shall submit to the Contracting Officer's representative
references of previous work justifying the firm's
experience. The Contracting Officer's representative
reserves the right to approve or disapprove the use of
the Contractor contingent on the firm's experience.
E. In the event that a Contractor wishes to modify any
methods specified in this section, he shall submit his
proposal in writing for consideration and review. The
Contracting Officer's representative will have the right
to ask for samples before final approval. Any such
modifications or changes shall be a no additional cost to
F. Regulatory Requirements:
1. Comply with municipal and Federal regulations
governing the cleaning, chemical waste disposal,
scaffolding protection to adjacent properties and
2. Refer to Federal Government Specification Section
01546, Health and Safety, and comply with all the
G. Samples: The Contractor shall clean a 4'-0" by 4'-0" bay
of the existing asphalt floor tile on each different
color for review by the Contracting Officer's
representative. Locations of sample floor bays to be
selected by the Contracting Officer's representative.
These cleaned asphalt floor tile bays are to be protected
by the Contractor and will be used for matching
replacement asphalt floor tiles.
H. The Contractor shall prepare a sample bay, approximately
4'-0" by 4'-0", of replaced asphalt floor tile. The
sample bay should be made to match the existing cleaned
adjacent asphalt floor tile in all respects. The
Contracting Officer's representative shall select the
location for the sample of replaced asphalt floor tile.
1.04 PROJECT/SITE CONDITIONS
A. Environmental Requirements: Maintain minimum temperature
of 65 F (18 C) in spaces to receive synthetic flexible
composite flooring for at least 48 hours prior to
installation, during installation and for not less than
48 hours after installation. Store synthetic flexible
composite flooring materials in spaces where they will be
installed for at least 48 hours before beginning
installation. Subsequently, maintain minimum temperature
of 55 F (13 C) in areas where work is completed.
1.05 SEQUENCING AND SCHEDULING
A. Coordinating Work: Install synthetic flexible composite
flooring and accessories after other finishing
operations, including painting, have been completed.
A. Extra Stock:
1. Deliver stock of maintenance materials to
Government. Furnish maintenance materials from same
manufactured lot as materials installed and
enclosed in protective packaging with appropriate
2. Tile Flooring: furnish not less than one box for
each 50 boxes, or fraction thereof, for each type,
color, pattern and size installed.
A. Kentile Floors, Inc.
4532 S. Kolin Avenue
Chicago, IL 60632
B. General Paint and Chemical Company
Division of Cotter and Company
Chicago, IL 60614
A. Asphalt Floor Tiles: Color and patterns to be determined
(Kentile Floors, Inc.), or approved equal.
B. Adhesives (Cements): Waterproof stabilized-type to be
recommended by the manufacturer of the synthetic flexible
composite flooring to be installed.
C. Concrete Slab Primer: Non-staining type as recommended by
the flooring manufacturer.
D. Leveling and Patching Compounds: Latex-type as
recommended by the manufacturer.
E. Cleaning Asphalt Floor Tiles (Built-up Coatings): A non-
ammoniated liquid was stripper/floor cleaner such as
"Tru-Test Floor Stripper FS10" (General Paint and
Chemical Company), approved equal.
A. Verification of Conditions: Require installer to inspect
subfloor surfaces to determine that they are
satisfactory. A satisfactory subfloor surface is defined
as one that is smooth and free from cracks, holes,
ridges, coatings preventing adhesive bond, and other
defects impairing performance or appearance.
B. Work shall not proceed until the subfloor surfaces have
had all dirt, foreign matter, old mastics and adhesives
A. Surface Preparation: Prepare subfloor surfaces as
1. Use leveling and patching compounds as recommended
by synthetic flexible composite flooring
manufacturer for filling small cracks, holes and
depressions in subfloors.
2. Remove coatings from subfloor surfaces that would
prevent adhesive bond, including curing compounds
incompatible with flooring adhesives, paint, oils,
waxes and sealers.
3. Broom clean or vacuum surfaces to be covered and
3.03 ERECTION, INSTALLATION, APPLICATION
1. Install synthetic flexible composite flooring using
method indicated in strict compliance with
manufacturer's printed instructions. Extend
synthetic flexible composite flooring into toe
spaces, door reveals, and into closets and similar
2. Scribe, cut and fit synthetic flexible composite
flooring to permanent fixtures, built-in furniture
and cabinets, pipes, outlets and permanent columns,
walls and partitions.
3. Tightly cement synthetic flexible composite
flooring to sub-base without open cracks, voids,
raising and puckering at joints, telegraphing of
adhesive spreader marks or other surface
imperfections. Hand roll synthetic flexible
composite flooring at perimeter of each covered
area to assure adhesion.
B. Installation of Tile Floors:
1. Lay tile from center marks established with
principal walls, discounting minor offsets, so that
tile at opposite edges of room area of equal width.
Adjust as necessary to avoid use of cut widths less
than one-half tile at room perimeters. Lay tile
square to room axis, unless otherwise shown.
2. Match tiles for color and pattern by using tile
from cartons in same sequence as manufactured and
packaged if so numbered. Cut tile neatly around all
fixtures. Broken, cracked, chipped or deformed
tiles are not acceptable.
a. Lay tile to follow the existing floor tile
pattern or as recommended in the original
3. Adhere tile flooring to substrate using full spread
of adhesive applied in compliance with flooring
C. All the asphalt floor tiles are to be cleaned and sealed
upon completion. See recommendations in procedure 09660-
04-R for guidance.
END OF SECTION