U-Pol Acid 8 1K Etch Primer - Grey
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Product Information
Full details
The U-Pol Acid 8 1K Etch Primer is an essential tool for automotive bodywork professionals and DIY enthusiasts who require a reliable foundation for their paint projects. Its primary benefit is providing superior adhesion to difficult surfaces like aluminium and galvanised steel, effectively preventing corrosion before the final topcoat. While it offers excellent durability and speed, users should be aware that it requires proper surface preparation and a well-ventilated area for safe application due to its chemical nature.
All features
| Colour | Grey |
|---|---|
| Model Part Number | ACID1 |
| Brand | U-Pol |
Extended Product Information
FAQs
Can I use this over old paint?
No, Acid 8 is designed for bare metal. It should not be used over existing paint coatings.
What topcoats are compatible with this primer?
It is compatible with most standard 1K and 2K automotive topcoats and primers.
Do I need to sand the primer before painting?
If you have a smooth application, sanding may not be required, but a light scuff with fine-grade abrasive can improve topcoat adhesion.
Is this primer safe for indoor use?
No, this product must be used in a well-ventilated area, preferably a spray booth, with appropriate respiratory protection.
Does it need a hardener?
No, Acid 8 1K is a single-component system and does not require the addition of a hardener.
Troubleshooting
Nozzle clogging during application
Invert the can and spray until clear, or remove the nozzle and clean with solvent-based thinners.
Primer peeling or flaking
Ensure the surface was sanded and thoroughly degreased prior to application; residue often causes poor adhesion.
Rough or textured finish
Check your spray distance; spraying too far away can cause the paint to dry before it hits the surface (dry spray).
Pros and Cons
Pros
- Excellent bond strength on non-ferrous metals
- Ready-to-use aerosol delivery system
- Quick drying time increases shop productivity
- Provides reliable corrosion resistance
- Compatible with a wide range of automotive topcoats
Cons
- Requires professional-grade respiratory protection
- Not suitable for direct application over existing paint
- Must be used in well-ventilated environments
- Can be sensitive to incorrect surface cleaning
Setup, Compatibility & Care
Before use, ensure the surface is free from grease, wax, and silicone by using a dedicated degreaser. Shake the aerosol can vigorously for at least two minutes until the internal mixing ball rattles freely. Hold the nozzle 15-20cm from the surface and use smooth, sweeping motions. After finishing, invert the can and spray for a few seconds to clear the nozzle and prevent clogging. Store the container in a cool, dry place away from direct heat sources to maintain shelf life.