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The U-Pol HIGH5 1K High Build Primer is designed for automotive technicians and DIY enthusiasts who need a reliable, efficient surface preparation tool for spot and smart repairs. Its primary benefit is providing a high-build, fast-drying foundation that sands easily to create a professional-grade surface for topcoats; however, users should be aware that as a 1K aerosol product, it lacks the chemical resistance and long-term durability of professional-grade 2K (two-component) systems.
| Colour | Grey |
|---|---|
| Model Part Number | HIGHG/AL |
| Brand | U-Pol |
| Container Volume | 450ml |
While it provides good adhesion, it is best practice to use an etch primer on raw steel before applying high-build filler primer for maximum corrosion protection.
Yes, for a professional finish, you should sand the primer with fine-grit abrasive once fully cured to ensure a perfectly smooth surface.
No, this is a 1K (one-component) product, meaning it does not require an activator or hardener.
It is recommended to use a plastic adhesion promoter first if you are applying it to bare plastic components.
Drying times vary based on ambient temperature and humidity; check the can for specific flash-off times, though it is usually sandable within 30-60 minutes.
Grey is a neutral color that provides an excellent foundation for most topcoat colors, reducing the number of basecoats needed for full opacity.
Apply thinner coats and increase the distance between the nozzle and the surface.
Remove the nozzle and soak it in a small amount of thinners or replace it with a spare.
Ensure the surface was sanded with the correct grit and thoroughly degreased before application.
Before application, ensure the substrate is thoroughly cleaned with a degreaser and sanded with appropriate grit sandpaper to ensure adhesion. Shake the aerosol can vigorously for at least two minutes before use to ensure the pigment and solids are fully integrated. Always test the spray pattern on a scrap piece of cardboard to confirm the nozzle is clear. Following use, invert the can and spray for a few seconds to clear the valve of residual primer, preventing clogging for future use. Store the canister in a cool, dry place away from direct sunlight and extreme temperatures.
