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Finishing Process

Hope’s Power of 5 Finishing System

Finishing processes for steel windows and doors vary dramatically. Hope’s takes tremendous pride in offering the ultimate finishing solutions geared to protect your investment whether your project is inland or ocean-front. Finishing processes must be carefully scrutinized to ensure products will perform, both aesthetically and functionally, for years to come.

1

Cleaning

All steel sections must be acid pickled to white metal as defined by SSPC – SP8 creating a pristine, white metal substrate which is paramount to achieving ultimate finish performance.

2

Pretreatment

Following welding and all machining operations, products are subjected to a multitude of pretreatments geared specifically to project specific criteria (consult Hope’s for guidance).

Inland locations (12-stage process)
Greater than one (1) mile from salt water and similar corrosive environments:

  1. Alkaline cleaning spray
  2. Alkaline cleaning – submersion
  3. Water immersion rinse combo
  4. Water immersion rinse clean
  5. Acid immersion
  6. Neutralizing rinse
  7. Water immersion rinse clean
  8. Conditioner immersion
  9. Zinc phosphate immersion
  10. Rinse immersion
  11. Sealer immersion
  12. Water reverse osmosis rinse immersion

Ocean Front/Coastal locations (13-stage process)
Within one (1) mile of salt water and similar corrosive environments:

  1. Zinc metal deposition (Electroplate and/or hot-dip, consult Hope’s)
  2. Alkaline cleaning spray
  3. Alkaline cleaning – submersion
  4. Water immersion rinse combo
  5. Water immersion rinse clean
  6. Acid immersion
  7. Neutralizing rinse
  8. Water immersion rinse clean
  9. Conditioner immersion
  10. Zinc phosphate immersion
  11. Rinse immersion
  12. Sealer immersion
  13. Water reverse osmosis rinse immersion

3

Epoxy E-coat Primer

All pretreated frames and accessories are immersed into an electrostatic (E-coat) bath of PPG Powercron® 8000 epoxy primer. Electrostatic application ensures all substrates are encapsulated evenly. Epoxy ensures superior adhesion for secondary coating.

  1. Permeate spray
  2. Permeate rinse
  3. Paint immersion and electrostatic encapsulation
  4. Water reverse osmosis rinse
  5. Oven-cure, 45 minutes @ 350° F

4

Epoxy Powder Primer

In addition to a pristine substrate and cutting-edge pretreatment and the E-coat system, Hope’s incorporates an abrasion resistant coating that ensures ultimate substrate protection.

  1. Following pretreatments and the E-coat priming system, all frames and accessories are factory coated with an epoxy powder coat abrasion resistant layer.
  2. Powder is applied electrostatically over cured E-coat to a dry film thickness (DFT) of 2.0-3.0 mils.
  3. Parts oven baked at 325° F to completely cure prior to final top coat.
  4. Powder coat is intended as an intermediate finish applied prior to the final finish top coat.

5

Ultrathane Polyurethane Top Coat

The final top coat defines the final stage to the overall aesthetics and performance of the finished product. Hope’s ultrathane polyurethane finish is a polyurethane blend that offers outstanding UV stability, superior touch-up capability, low chalking and fading characteristics, unlimited color matching, and 70,000+ standard colors, including metallics.

  1. Following pretreatments and the E-coat priming system, all frames and accessories are factory coated with an epoxy powder coat abrasion resistant layer.
  2. Powder is applied electrostatically over cured E-coat to a dry film thickness (DFT) of 2.0-3.0 mils.
  3. Parts oven baked at 325° F to completely cure prior to final top coat.
  4. Powder coat is intended as an intermediate finish applied prior to the final finish top coat.

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COLOR PALETTE CATALOG

Color chip samples are as close as possible to actual colors within the limitation of RGB on-screen reproduction.

POWER OF 5 PERFORMANCE

Combined overall dry film thickness shall be a minimum of 4.6 mils (inland locations) and 7.1 mils (coastal locations).

Overall process shall provide full documented compliance with the following criteria:

  • SSPC-SP8 for acid pickling
  • ASTM D714-02 Paint Blistering Test
  • ASTM D4585 Humidity
  • ASTM D1654-05 Painted Products in Corrosive Environment
  • ASTM B117-03 Salt Spray (Fog) Test
  • ASTM G85 Cyclic Fog/ Dry Test (Prohesion)
  • ASTM D5894-96 Salt Fog/ UV Painted Metal
  • ASTM D4541 Pull Off Strength of Coating Test

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