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Historic Preservation - Technical Procedures

Spectitle:

Removing Dirt Build-Up On Asphalt Tile

Procedure code:

0966004R

Source:

National Capitol Region Specifications

Division:

Finishes

Section:

Resilient Tile Flooring

Last Modified:

02/24/2012

Details:

Removing Dirt Build-Up On Asphalt Tile



REMOVING DIRT BUILD-UP ON ASPHALT TILE


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on cleaning and sealing
         asphalt floor tiles.  

    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.   For guidance on replacing cracked or missing asphalt
         tiles, see 09660-02-R.

    D.   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.   Control Sample Panels:  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.

1.03 QUALITY ASSURANCE

    A.   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.


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   General Paint and Chemical Company
         Cotter and Company
         Chicago, IL 60614

2.02 MATERIALS

    CAUTION: AVOID USING SOLVENTS TO CLEAN THIS MATERIAL.
    SOLVENTS WILL SOFTEN AND EVENTUALLY DISSOLVE THE MATERIAL.

    A.   A non-ammoniated liquid wax stripper/floor cleaner for
         cleaning asphalt floor tiles, such as "Tru-Test Floor
         Stripper FS10" (General Paint and Chemical Company), or
         approved equal.

    B.   Clean, potable water

2.03 EQUIPMENT

    A.   Broom or vacuum

    B.   Mop and bucket

    C.   Stiff bristle brushes


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Cleaning and Protection of New Floor Tiles:  Perform the
         following operations immediately upon completion of
         synthetic flexible composite flooring.

         1.   Sweep or vacuum floor thoroughly.

         2.   Do not wash floor until time period recommended by
              synthetic flexible composite flooring manufacturer
              has elapsed to allow synthetic flexible composite
              flooring to become well sealed in adhesive.

         3.   Damp mop floor, being careful to remove black marks
              and excessive soil.

         4.   Remove any excess adhesive or other surface
              blemishes, using appropriate cleaner recommended by
              synthetic flexible composite flooring
              manufacturers.

         5.   Apply protective floor polish to synthetic flexible
              composite flooring surfaces free from soil, excess
              adhesive or surface blemishes.  Use commercially
              available metal cross-linked acrylic product
              acceptable to synthetic flexible composite flooring
              manufacturer.

    B.   Cleaning Existing Asphalt Floor Tiles: Removal of polish
         coatings should be performed after every three or four
         polish coatings in order to prevent yellowing and dirt
         build-up in the polish coating.

         1.   Thoroughly clean all the existing asphalt floor
              tiles and remove existing thermoplastic surface
              coatings using a non-ammoniated wax stripper,
              containing detergent and surfactants diluted in hot
              water and augmented by scrubbing with bristle
              brushes.
   
         2.   Rinse off all cleaned asphalt floor tiles with
              water and mop dry.

         3.   Once all floor tiles have been installed (as
              described in 09660-02-R) and cleaned (as described
              above), mop with a thermoplastic coating and buff
              with organic plasticizers.

                         END OF SECTION