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Historic Preservation - Technical Procedures

Spectitle:

Replacing Cracked Or Missing Asphalt Tiles

Procedure code:

0966002R

Source:

National Capitol Region Specifications - Switzer Building

Division:

Finishes

Section:

Resilient Tile Flooring

Last Modified:

02/24/2012

Details:

Replacing Cracked Or Missing Asphalt Tiles



REPLACING CRACKED OR MISSING ASPHALT TILES


PART 1---GENERAL

1.01 SUMMARY

    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
         configuration.

    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

         3.   Submittals

         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).  

1.02 SUBMITTALS

    A.   Product Data: Submit manufacturer's technical data for
         each type of synthetic flexible composite flooring and
         accessory.

    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
         accessory required.

    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
         appearance.

    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
         the Government.

    F.   Regulatory Requirements:

         1.   Comply with municipal and Federal regulations
              governing the cleaning, chemical waste disposal,
              scaffolding protection to adjacent properties and
              workers.

         2.   Refer to Federal Government Specification Section
              01546, Health and Safety, and comply with all the
              section requirements.

    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.

1.06 MAINTENANCE

    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
              identifying labels.

         2.   Tile Flooring: furnish not less than one box for
              each 50 boxes, or fraction thereof, for each type,
              color, pattern and size installed.


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   Kentile Floors, Inc.
         4532 S. Kolin Avenue
         Chicago, IL 60632
         312/523-6814

    B.   General Paint and Chemical Company
         Division of Cotter and Company
         Chicago, IL  60614

2.02 MATERIALS

    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.


PART 3---EXECUTION

3.01 EXAMINATION

    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
         removed.

3.02 PREPARATION

    A.   Surface Preparation:  Prepare subfloor surfaces as
         follows:

         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
              inspect subfloor.

3.03 ERECTION, INSTALLATION, APPLICATION

    A.   General:

         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
              openings.

         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
                   drawings.

         3.   Adhere tile flooring to substrate using full spread
              of adhesive applied in compliance with flooring
              manufacturer's directions.

    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