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Historic Preservation - Technical Procedures

Spectitle:
Installing New Unit Wood Block Flooring To Match Existing

Procedure code:
0956501R

Source:
Federal Building/New Post Office - Bldg Conservation Technol

Division:
Finishes

Section:
Wood Block Flooring

Last Modified:
02/24/2012

Details:
Installing New Unit Wood Block Flooring To Match Existing



INSTALLING NEW UNIT WOOD BLOCK FLOORING TO MATCH EXISTING


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on installing new unit
         wood block flooring to replace lost or severely damaged
         portions of existing unit wood block floors, or to
         enlarge or alter an area of existing wood block floors.
         GENERALLY, THIS WORK SHOULD BE ACCOMPLISHED BY A
         EXPERIENCED CONTRACTOR.

    B.   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.   Samples:  Submit 9" x 9" samples of proposed replacement
         blocks to the RHPO for approval of type, species, and
         grade of wood. Samples shall be stained and finished to
         match existing.

1.03 PROJECT/SITE CONDITIONS

    A.   Environmental Requirements:  Office area temperatures
         shall be maintained at a constant 70 degrees F. for 48
         hours (and a maximum relative humidity of 60%) before and
         after installation.


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   E.L. Bruce Company
         Memphis, TN

    B.   Armstrong Cork Company
         Floor Division
         Lancaster, PA

    C.   The Sherwin Williams Company
         101 Prospect Ave. N.W.
         Cleveland, OH  44101
         216/566-2000

    D.   The Hillyard Chemical Company
         St. Joseph, Missouri
         800/365-1555

2.02 MATERIALS

    A.   Wood Blocks: 9" x 9" first quality plain oak unit wood
         blocks such as those manufactured by E.L. Bruce Company,
         which match existing blocks in type, pattern, and finish.

    B.   Sub-Floor: No. 1 tongue-and-groove pine boards and No. 1,
         2" thick pine blocking.

    C.   Adhesive: Adhesive compound "J-1114" (Armstrong Cork
         Company), "Bruce Everbond Cold-Stik Mastic" (E.L. Bruce
         Company), or approved equal.

    D.   Wood Filler: Paste wood filler such as "A55-T-4" (Sherwin
         Williams), or approved equal.

    E.   Stain: Penetrating permanent oil-based stain such as "Oil
         Stain" (Sherwin Williams), or approved equal. Color to
         match existing unit wood block flooring.

    F.   Varnish: Linseed-tung modified phenolic spar varnish such
         as "Rexpar" (Sherwin Williams), or approved equal.

    G.   Polish: Wood wax polish such as "HIL-KOTE" (Hillyard
         Chemical Company), or approved equal.


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Remove all existing floor finishes including carpeting
         and underlayment. Scrape off all adhesive material to
         provide dry, clean and smooth surface.

    B.   If removal of existing work exposes discolored or
         unfinished surfaces or work out of alignment or
         unsuitable materials, such surfaces shall be refinished
         or the materials shall be replaced as necessary to make
         continguous work uniform. Replace all sub-floor boards
         that are broken, warped or cannot be made level by
         planing or nailing. Sweep clean to remove all dirt and
         loose debris.

    C.   Install new unit wood blocks securely to sub-floor with
         adhesive in accordance with the manufacturer's latest
         printed instructions. Follow existing flooring pattern in
         adjoining areas. Do not scrub, clean, stain or varnish
         until 4-5 days after installation to allow adhesive to
         set properly.

    D.   Finishes:  Fill, stain, varnish and polish as follows:

         1.   Sweep flooring perfectly clean. Fill open grain
              with paste-wood filler. Apply stain according to
              manufacturer's directions after adhesive has set at
              least 48 hours.

         2.   Apply stain according to manufacturer's
              instructions. Allow surface to dry at least 24
              hours. Sand smooth, sweep clean of sand and remove
              dust with a tack rag.

         3.   Apply one coat varnish reduced with one pint of
              Mineral Spirits per gallon. Allow to dry 15-18
              hours until tack free; sand lightly and wipe with
              tack rag.

         4.   Apply second coat of varnish at package
              consistency. Allow to dry at least 48 hours.

         5.   Prior to final inspection, clean thoroughly with
              manufacturer's recommended cleaner. Apply 1-2 coats
              polish.

                        END OF SECTION