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Historic Preservation - Technical Procedures

Spectitle:

Routine Cleaning Of Painted Or Whitewashed Doors

Procedure code:

0990002P

Source:

Hspg Prepared For Nps - Sero

Division:

Finishes

Section:

Painting

Last Modified:

02/24/2012

Details:

Routine Cleaning Of Painted Or Whitewashed Doors



ROUTINE CLEANING OF PAINTED OR WHITEWASHED DOORS


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on cleaning painted or
         whitewashed doors using mild soap and water or a liquid
         bleach solution.


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   The Procter & Gamble Co.
         P.O. Box 599
         Cincinnati, OH  45202
         513/983-1100

2.01 MATERIALS

    NOTE:  Chemical products are sometimes sold under a common
    name.  This usually means that the substance is not as pure as
    the same chemical sold under its chemical name.  The grade of
    purity of common name substances, however, is usually adequate
    for stain removal work, and these products should be purchased
    when available, as they tend to be less expensive.  Common
    names are indicated below by an asterisk (*).

    A.   Neutral pH detergent such as "Orvus" (Procter & Gamble),
         or approved equal, using dilution recommended by
         manufacturer.

    B.   Household bleach (diluted with an equal part of water):

         CAUTION:  DO NOT MIX AMMONIA WITH CHLORINE BLEACHES, A
         POISONOUS GAS WILL RESULT!  DO NOT USE BLEACH ON BIRD
         DROPPINGS.

         1.   Other chemical or common names include Sodium
              hypochlorite; Bleaching solution*; Laundry bleach*;
              Solution of chlorinated soda*.

         2.   Potential Hazards:  CORROSIVE TO FLESH.

         3.   Available from chemical supply house, grocery store
              or supermarket, hardware store or janitorial supply
              distributor.

    C.   Clean, potable water

2.02 EQUIPMENT

    A.   Two buckets (solution and rinse)

    B.   Two sponges (solution and rinse)

    C.   String mop

    D.   Supply of dry wiping cloths and chamois

    E.   Broom and garden sprayer

    F.   Soft fiber bristle brush or rag

    G.   Garden hose


PART 3---EXECUTION

3.01 EXAMINATION

    A.   Regularly inspect for dirt build-up.  Cleaning should be
         done regularly.

3.02 PREPARATION

    A.   Surface Preparation:  Adjacent surfaces and permanent
         equipment must be masked or covered during cleaning.
         Coverings must be adhered without adhesive tape or nails.
         Impervious sheeting that produces condensation shall not
         be used.

3.03 ERECTION, INSTALLATION, APPLICATION

    A.   Painted Doors:  Clean only a small area at a time.  Move
         historic furnishings and objects away from area to be wet
         cleaned.

         1.   Clean with a mild detergent and water.  Scrub with
              a soft bristle brush.  Scrub corners with a
              tapered-end hand brush or hand held mop strands.
              DO NOT ALLOW CLEANING SOLUTION TO REMAIN ON SURFACE
              FOR MORE THAN 10 MINUTES.

              NOTE:  THERE IS SOME DIFFERENCE OF OPINION AS TO
              WHETHER IT IS BEST TO WASH A WALL WORKING FROM THE
              TOP DOWN OR FROM THE BOTTOM UP.  BOTTOM UP IS SAFER
              BECAUSE SOLUTION STREAKS RUNNING DOWN ON A DIRTY
              WALL CANNOT BE REMOVED.  THE IMPORTANT THING IS TO
              WORK DRY ENOUGH TO AVOID DRIPS.

         2.   Rinse surface twice thoroughly using a sponge and
              clean, clear water, and allow to dry.  Remove
              streaks with a damp chamois and water.

              NOTE:  TO PREVENT WATER FROM STREAKING THE WALL,
              THE SPONGE USED FOR THE CLEANING SHOULD BE WET BUT
              NOT DRIPPING.  

         3.   Remove mildew, moss, fungal growth, and vegetation
              by scrubbing with a sponge soaked in a 50/50
              solution of liquid bleach and water.  

         4.   Rinse thoroughly with clean, clear water and allow
              to dry.  If discoloration persists contact Regional
              Historic Preservation Officer (RHPO).

         5.   Dust doors and frames seasonally to remove dust and
              cobwebs.

    B.   Whitewashed Doors:  

         CAUTION:  DO NOT USE DETERGENTS OR BRUSHES; WHITEWASH
         COATING IS NOT AS DURABLE AS PAINT.

         1.   Clean exterior side of door twice annually with
              water sprayed under normal pressure from a garden
              hose and nozzle.

         2.   For soiled areas or for interior doors, use mild
              detergent and water applied with a soft sponge.

         3.   Rinse thoroughly with clean, clear water and allow
              to dry.

                             END OF SECTION