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Historic Preservation - Technical Procedures

Spectitle:

Reconditioning Existing Leather Finish On Ctroom Fly Doors

Procedure code:

0995002R

Source:

Federal Bldg/P.O., Spokane, Wa - Gsa/Pgs

Division:

Finishes

Section:

Wall Coverings

Last Modified:

02/24/2012

Details:

Reconditioning Existing Leather Finish On Ctroom Fly Doors



RECONDITIONING EXISTING LEATHER FINISH ON COURTROOM FLY DOORS


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on repairing and
         restoring the existing leather door covering finish
         (typical on courtroom fly doors).

    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).

    C.   An imitation leather material called "Pantasote" is
         commonly used in the place of leather on Courtroom fly
         doors.  For general information on "Pantasote" see 09950-
         01-S.

1.02 QUALITY ASSURANCE

    A.   Qualifications:  Reserve this work for a leather cleaning
         and restoration specialist, saddle or luggage maker,
         leather upholstery restorer, or similarly qualified
         leather worker with not less than three years experience
         in the care and refinishing of fine leather work.


PART 2---PRODUCTS

2.01 MATERIALS

    NOTE:  Use only products and procedures which are approved and
    recommended for the restoration and conservation of old
    leather materials, non-drying, which do not cause hardening,
    non-film forming, and non-staining or discoloring.

    A.   Saddle soap or leather cleaner:  "Fiebings" liquid
         glycerine leather soap, or approved equal.

    B.   Leather dye:  Oil base dye, to match existing color of
         cleaned leather.

    C.   Leather preserver and conditioner:  "Lexol", oil based,
         or approved equal.

    D.   Adhesive:  PH neutral, "Yes" all purpose (Gane Bros. &
         Lane, Inc.), or approved equal.

    E.   Ornamental tacks and fasteners:  To match existing, brass
         or other non-ferrous or non-rusting.


PART 3---EXECUTION

3.01 PREPARATION

    A.   Removal of doors for work or work-in-place at
         contractor's option.

    B.   Verify existing hardware, and have hardware replaced or
         reconditioned and refinished as required to restore
         original function and operation, before proceeding with
         leather reconditioning.  Be responsible for all damage to
         leather finishes from subsequent work on doors or other
         work.

    C.   Use care to preserve all original and unique hardware for
         restoration and re-installation to match original
         condition.

3.02 ERECTION, INSTALLATION, APPLICATION

    A.   Repair any loose edges, cuts, or tears by re-cementing
         leather finish to the wood door face; suitably clean and
         prepare the substrate to ensure a secure long-lasting
         bond to leather finish.

         1.   Apply adhesive to both surfaces to be bonded, prime
              surfaces, all as recommended by manufacturer, and
              apply weight or clamp as required until bond is
              complete.

    B.   Remove all loose or damaged hardware and ornamental tacks
         or studs for replacement or re-installation after leather
         is cleaned and reconditioned.

    C.   Clean leather with approved soap and clean water, applied
         and supplemented with clean sponges and soft bristled
         brushes, to remove surface dirt and residue of old
         cleaners, oil staining, and other water soluble coatings.

         1.   Supplementary cleaning, spot cleaning, may be
              required to remove oil and wax based stains or
              foreign materials, using care to prevent damage to
              existing leather and over-cleaning with harsh
              chemicals harmful to leather.  Verify non-removable
              stains with Contracting Officer and leave as-is
              unless greater removal effort is required.

         2.   Use gentlest cleaning methods and products
              practicable to avoid damage to leather.

    D.   Touch-up any scuffs, cuts, abrasions, and seams with
         leather dye to make them unobtrusive from normal viewing
         distance.

    E.   Apply leather preserver and re-conditioner in accordance
         with manufacturer's recommendations, followed by hand
         buffing and polishing with soft cloths or brushing.

    F.   Reinstall hardware, fastenings, and ornamental studs and
         make secure from loss and removal, using supplementary
         adhesives as required.

3.03 PROTECTION

    A.   Provide adequate protection to save doors and leather
         finish from damage until completion and acceptance of the
         work.

                             END OF SECTION