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Historic Preservation - Technical Procedures

Spectitle:

Cleaning Discolored Or Stained Wall Covering

Procedure code:

0995003R

Source:

Internet - Wallpaper Repair

Division:

Finishes

Section:

Wall Coverings

Last Modified:

02/24/2012

Details:

Cleaning Discolored Or Stained Wall Covering



CLEANING DISCOLORED OR STAINED WALL COVERING


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on cleaning stained or
         discolored wall covering.  Most wall coverings are
         classified as either "non-washable", "washable", or
         "scrubbable".  General procedures for each type are
         included below under Execution.

    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).


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   Absorene Manufacturing Co.
         1609 North 14th St.
         St. Louis, MO 63106
         314/231-6355
         
2.02 MATERIALS

    A.   Paste Spot Remover (available in local hardware store,
         home improvement centers, or paint/wallpaper stores)

    B.   Commercial wallpaper cleaner such as "Absorene" - a
         doughy wall cleaner (Absorene Manufacturing Co.)

    C.   Erasers, such as powdered draftsman's pad or Opaline
         pads, or hard vinyls like Staedtler or Art Gum.

    D.   Denatured Alcohol:

         1.   Other chemical or common names include Methylated
              spirit*.

         2.   Potential hazards:  TOXIC AND FLAMMABLE.

         3.   Available from hardware store, paint store or
              printer's supply distributor.

         4.   Denatured alcohol should be a satisfactory
              substitute for ethyl alcohol for stain removing
              purposes.

    E.   Mild dish-washing detergent

    F.   Household Bleach:

         1.   An unstable salt produced usually in aqueous
              solution and used as a bleaching and disinfecting
              agent.

         2.   Other chemical or common names include Bleaching
              solution*; Laundry bleach*; Sodium Hypochlorite
              (NaOCl); Solution of chlorinated soda*.

         3.   Potential Hazards:  CORROSIVE TO FLESH.

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

    G.   Blotter/paper towels

2.03 EQUIPMENT

    A.   Sponges

    B.   Putty knife

    C.   Iron

    D.   Buckets

    E.   Clean, soft cloths or towels

    F.   Soft-bristle brush

    G.   Vacuum


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    NOTE: ALWAYS TEST CLEANING METHODS IN AN INCONSPICUOUS
    LOCATION TO DETERMINE THE SAFEST AND MOST SUITABLE METHOD.

    A.   For Washable Coverings: These usually have a plastic
         coating.

         1.   Wash the surface using a damp sponge and a mild
              dishwashing detergent mixed in cool water; wipe the
              surface from the bottom up; wipe using a circular
              motion in overlapping strokes.

         2.   Pat the surface dry using a soft cloth or towel.

         3.   If a second washing is necessary, allow the wall to
              completely dry before beginning the cleaning
              sequence again.

    B.   For Scrubbable Coverings (usually vinyl or vinyl-
         impregnated paper):

         1.   Scrub the surface using a sponge or soft cloth and
              a foam cleanser or all-purpose detergent.

         2.   Rinse the cleaner from the surface using a clean,
              damp sponge.

         3.   Pat the surface dry using a soft cloth or towel.

    C.   For Fabric Coverings (such as burlap or grass cloth):

         1.   Remove loose dirt using a clean cloth or vacuum.

         2.   Spot clean only using a sponge or soft-bristle
              brush and a mild detergent.  For stubborn spots,
              try adding 2-3 tablespoons of bleach to the
              solution.

         3.   Rinse the area thoroughly with a clean, damp sponge
              or soft cloth and water.

         4.   Pat the surface dry using a soft cloth or towel.

    D.   For Non-washable Coverings: Clean using a commercial
         wallpaper cleaner.  Follow manufacturer's instructions.

    E.   For Stain Removal:

         1.   For Fingerprints, Smudges, and Pencil Marks:

              a.   Rub gently with art gum (or other eraser-type
                   material, or use commercial wallpaper cleaner,
                   following manufacturer's instructions.

              b.   If paper is washable, marks may be removed
                   using a damp sponge and a solution of mild
                   dishwashing detergent and cool water.

         2.   For Grease Spots:

              a.   Set blotter or paper towels over stain and
                   press with a warm iron.  Grease should be
                   loosened and  absorbed by the towels.

              b.   If stain still remains, apply a paste spot
                   remover and allow to dry; brush off powder
                   from the surface.

              c.   For washable wallpaper, wipe off grease using
                   a sudsy sponge, followed by damp sponge.

         3.   For Crayon Marks:

              a.   Scrape off excess crayon using a putty knife.

              b.   Set blotter or paper towels over stain and
                   press with a warm iron.  Crayon should be
                   loosened and  absorbed by the towels.

              c.   For non-washable papers, apply a paste spot
                   remover and allow to dry.

                   -or-

                   Gently wipe the stained area with denatured
                   alcohol or spot remover.  Use a clean, soft
                   cloth to apply the solvent.

                   NOTE: THESE SOLVENTS ARE FLAMMABLE AND VAPORS
                   ARE TOXIC, SO BE SURE THERE IS NO FLAME,
                   SPARK, OR PILOT LIGHT IN AREA, HAVE PLENTY OF
                   VENTILATION.  USE ONLY ON SMALL SPOTS.

              d.   For washable papers, wipe off crayon using a
                   sudsy sponge followed by a damp sponge and
                   allow to dry.  Try not to smear the residue.

                         END OF SECTION