Stripping Paint From Ornamental Metal

Procedure code:
570003S
Source:
National Capitol Region Specifications - Old Executive Off
Division:
Metals
Section:
Ornamental Metalwork
Last Modified:
06/07/2016


STRIPPING PAINT FROM ORNAMENTAL METAL

PROJECTS INVOLVING PAINT REMOVAL ARE SUBJECT TO STATE AND FEDERAL LAWS ON LEAD PAINT ABATEMENT, DISPOSAL AND USE OF VOLATILE ORGANIC COMPOUNDS (VOCs). SPECIFIED PRODUCTS MAY NOT BE PERMITTED OR APPROPRIATE FOR ALL LOCATIONS. PRODUCTS CONTAINING CHEMICALS KNOWN TO PRESENT HEALTH OR ENVIRONMENTAL HAZARDS SHOULD BE USED ONLY AS A LAST RESORT, WHERE PERMISSIBLE, IN ACCORDANCE WITH MANUFACTURER'S DIRECTIONS AND GOVERNMENT REQUIREMENTS. TEST MILDER FORMULATIONS FOR EFFECTIVENESS BEFORE PROCEEDING TO STRONGER ALTERNATIVES.

PART 1---GENERAL

1.01 SUMMARY

A. This procedure includes guidance on chemically cleaning
and stripping paint from ornamental metal surfaces. See
also 05010-05-R, 05010-17-R and 05010-18-R for additional
guidance on removing paint from metal.

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 QUALITY ASSURANCE

A. Mock-ups: Demonstrate materials and methods to be used
for cleaning, paint stripping, and polishing for each
type of ornamental metal surface and condition on sample
panels of approximately 9 square feet in area. Test
adjacent non-metallic materials for possible reaction
with cleaning and paint stripping materials.

1.03 PROJECT/SITE CONDITIONS

A. Protect surrounding surfaces of building from damage
resulting from ornamental metal restoration work.

B. Prevent chemical cleaning and paint stripping solutions
from coming into contact with other surfaces which could
be inured by such contact.

C. Dispose of by-products from cleaning and paint stripping
operations in accordance with applicable regulations, in manner which prevents
damage to other surfaces.


PART 2---PRODUCTS

2.01 MANUFACTURERS

A. ProSoCo, Inc.
755 Minnesota Avenue
P.O. Box 1578
Kansas City, KS 66117
800/255-4255 or 913/281-2700
Prosoco.com

B. Savogran Company
www.savogran.com
800/225-9872 or 617/762-5400

C. Diedrich Technologies, Inc.
www.diedrichtechnologies.com

D. Star Bronze Co.
P.O. Box 2206
Alliance, OH 44601
216/823-1550
email@starbronze.com


2.02 MATERIALS

A. Chemical Paint Stripper: Thixotropic/alkaline formulation
for removing paint coatings from ornamental metal work,
such as "Sure Klean Fast Acting Stripper," (ProSoCo, Inc.),
or approved equal. Note: Contains Methylene Chloride. Potential substitutes (with case-specific research and on-site testing to verify applicablityand effectiveness) include "Envirestrip" (Diedrich Technologies), "EnviroKlean Safety Peel 1" (Prosoco, Inc), "Zip Strip 2" (Star Bronze Co.) and "Biodegradable Stripeeze" (Savogran Co.).


B. Liquid Strippable Masking Agent: Liquid, film forming,
strippable masking material for protecting glass, and
polished stone surfaces from damaging effect of acidic
and alkaline cleaners, such as "Sure Klean Acid Stop,"
(ProSoCo, Inc.), or approved equal.

C. Water for Cleaning: Clean, potable, free of oils, acids,
alkalis, salts, and organic matter.

E. Cleaning Pads: No. 4/0 fine steel wool or synthetic pads.

2.03 EQUIPMENT

A. Brushes: Fiber bristle only.


PART 3---EXECUTION

3.01 PREPARATION

A. Protection:

1. Comply with recommendations of manufacturers of
chemical cleaners and paint removers for protecting
building surfaces from exposure to their products.

2. Protect glass, unpainted metal trim and polished
stone from contact with acidic chemical cleaners by
covering them with liquid strippable masking agent
or polyethylene film and waterproof masking tape.
Apply masking agent to comply with manufacturer's
recommendations. Do not apply liquid masking agent
to adjacent painted or porous surfaces, use
waterproof masking tape.

3. Protect unpainted metal from contact with alkali
chemical cleaners by covering them either with
liquid strippable masking agent or polyethylene
film and waterproof masking tape.

4. Remove cellophane tape, masking tape, etc., from
ornamental metal surface prior to cleaning.

3.02 ERECTION, INSTALLATION, APPLICATION

A. Brush all peeling and loose paint from surface using a
stiff natural bristle brush. Do not use wire brushes.

B. Apply chemical paint stripper to painted surfaces with
brushes.

C. Allow stripper to remain on surface for period
recommended by paint stripper manufacturer.

D. Remove chemical and paint residue by sponge, cloth, or
brush rinsing with water.

E. Repeat process as required to produce desired effect.

F. Wipe surface completely dry with clean soft cloths.

G. Prime all metal within two hours of stripping and
cleaning. See 05700-02-R for guidance on cleaning
ornamental metal. See 05010-13-S for information on
paints and primers for use on metal.


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