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Cortec VpCI® 387 Acrylic (Water-Based) Hi-Build Topcoat

Cortec VpCI® 387 Acrylic (Water-Based) Hi-Build Topcoat

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VpCI® 387 Water-Based Topcoat is your ultimate solution for fast-drying, high-build protection in demanding outdoor applications. You can apply this top-of-the-line, one-coat system directly to metal surfaces (DTM).

Harness the power of a sophisticated blend of non-toxic, organic corrosion inhibitors. VpCI® 387 delivers top-tier protection and rivals the performance of most conventional paints and zinc-rich primers. Its versatile formula extends its shielding capability to multiple metal types. It has comprehensive multi-metal protection for various industrial applications.

One of the standout features of VpCI® 387 is its outstanding UV resistance. It is a reliable choice for projects exposed to intense sunlight and extreme weather conditions. With this water based topcoat, your assets will maintain their appearance and structural integrity for prolonged periods, even under the harshest outdoor, unsheltered environments.

Additionally, the water-based nature of VpCI® 387 ensures easy application, reduced environmental impact, and a quick drying time. It is the ideal choice for projects requiring fast turnaround times without compromising on quality.

To top it off, VpCI® 387 offers an extensive range of custom colours. It provides you the flexibility to match the coating to your specific aesthetic preferences or industry requirements. Whether you seek exceptional protection for equipment, infrastructure, or any metal surface, VpCI® 387 is the go-to solution for reliable, long-lasting, and visually appealing results.

Packaging and Storage

The available packaging options for VpCI® 387 include 5 gallons and 55 gallons. Packaging selections are either pails, drums, bulk containers or liquid totes. It is essential to protect the product from freezing.

Shelf life: One (1) year.


Surface preparation is essential before applying the coating. Ensure that the substrate is entirely free from dirt, grease, drawing compound, rust inhibitors, oil, or other impurities that may impact adhesion. For production line use, it's advisable to apply VpCI® 440 during pre-treatment process.

In protecting structural steel, Cortec® recommends SSPC-SP6/NACE#3 as a minimum requirement in blast cleaning. A recommended wash primer, like VpCI® 373 green, should be applied at a thickness of 12.5 to 25 microns before using VpCI®-387. Alternatively, you can opt for VpCI® 375, 395, or 396 depending on specific coating requirements.

Before application, ensure dew point of at least 2°C, which is lower than the room air temperature. Use a mixer with squirrel cage like container or hand-held mixer for uniform consistency. Other equivalent methods are good to power agitate the mixture. You can use brushing, rolling, spraying or dipping to apply VpCI® 387.

Equipment Set-up

For optimal application, we recommend using either conventional spray or airless equipment setups, depending on your preferences and project requirements.

Conventional/HVLP Spray

For HVLP or Conventional Spray application, select a tip size between .009" to .021", taking into account the fluidity and pressures. Maintain the air pressure within the range of 45 to 55 psi and the fluid pressure at 10 psi.

You should use an ID fluid hose with a diameter of 0.95 cm and a length of 15.2 meters maximum. Keep the pot equipped with two controls and at the same, consistent elevation as the spray gun to ensure best results.


If you choose this method, opt for a tip size ranging from .015" to .035", considering the viscosity & pressures used. The recommended pressure range for this setup is 1800 up to 2500 psi. Utilise a 0.37 inches I.D. hose as a minimum requirement, but for easier application, you can use a 0.25 inches I.D. whip end section. In this case, a maximum hose length of 30.5 m is the best options.


For cleanup purposes, it is essential to clean tools and equipment promptly after use while the paint is sticky and wet. Use water for this initial cleanup phase. In case the paint has dried, you can use MEK or Butyl Cellusolve for effective cleaning. Remember to adhere to the recommended safety procedures when using these solvents.

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