Removing primer – The substrate is crucial
"Deep primer cannot be removed" - almost everyone believes that.
That's true – but not always.
The crucial point is not the product, but the substrate.
The Substrate Decision Tree
✓ Non-absorbent substrates = deep primer is removable
- Glass: Windows, conservatories, glass facades, mirrors
- Plastic: Window frames, window sills, PVC surfaces
- Metal: Radiators, door frames, railings
- Tiles & Ceramics: Bathrooms, kitchens, floors
- Painted surfaces: Doors, furniture, sealed surfaces
→ HATOCH® Deep Primer Remover works here
✗ Absorbent substrates = deep primer is permanent
- Untreated plaster: Interior and exterior plaster without sealing
- Concrete: Raw, unsealed concrete
- Plasterboard: Drywall, plasterboard
- Porous materials: Natural stone, untreated wood
→ Here, deep primer is permanent – removal not possible
Why sanding deep primer is almost always a mistake
Sanding seals the surface. The deep primer then sits deeper, the chance of removal is gone.
Anyone who sands before checking the substrate irreversibly worsens their problem.
The 3 most common mistakes when removing deep primer
1. Wrong substrate
On absorbent surfaces (plaster, concrete), no removal works – the deep primer has penetrated permanently.
2. Sanding as a first measure
Seals the surface and makes chemical removal impossible.
3. Aggressive chemicals
Solvent-based products such as acetone or nitro thinner damage plastic, seals, and coatings – often irreversibly.
How HATOCH® Deep Primer Remover works
No hazardous substance labeling. Biodegradable. Residue-free.
- Precise application: Apply specifically to affected areas
- No aggressive chemicals: Protects material and health
- Reversible: Removes deep primer without damaging the surface
- Made in Germany: Developed for professional application
What size do you need?
50ml pen – For spot applications
✓ Small areas (window frames, individual stains)
✓ Precise dosage
✓ Ideal for testing
→ View 50ml Deep Primer Remover
500ml SPECIAL – Universal for all deep primer types
✓ Medium to large areas (several windows, radiators, construction sites)
✓ Works with acrylic, mineral, and silicate deep primers
✓ One product instead of three
Frequently Asked Questions
Can I remove deep primer on plaster?
No. On absorbent substrates (plaster, concrete, plasterboard), deep primer has penetrated permanently. Removal is not possible.
Does sanding work?
No – sanding exacerbates the problem. The surface is sealed, the deep primer sits deeper. After that, chemical removal is no longer possible.
How do I know if my substrate is absorbent?
Simple test: Spray water on the surface. Is it immediately absorbed? → Absorbent (removal not possible). Does it bead off? → Non-absorbent (removal possible).
What type of deep primer was used on my surface?
You often don't know – that's why we recommend the SPECIAL formula, which works with all common deep primer types.
The problem is not the deep primer – but the knowledge.
Make the right decision – before it's too late.