In a nutshell: Deep primer residues cannot be treated the same way on tiles, parquet, and natural stone. Tiles are usually uncritical, parquet requires careful, spot application due to its seal, and natural stone needs special caution: The pH-neutral HATOCH pH7 Stick is unproblematic here, while the citric acid-based SPECIAL variant should only be used on sensitive natural stone after a test.
→ Directly to the suitable product: HATOCH pH7 Stick 50ml or HATOCH SPECIAL 500ml.
Tiles
Tiles are generally robust against both HATOCH products. However, it is still important: Grout can react more sensitively than the tile itself – for unsealed grout, work carefully and precisely.
Parquet
For parquet, the seal is crucial. The remover should only be applied precisely and for a short time to avoid damaging the surface seal. After application, wipe dry promptly to prevent moisture damage to the wood.
Natural Stone
Natural stone such as marble or limestone reacts sensitively to acids. The HATOCH pH7 Stick is pH-neutral and well suited for acrylic/hybrid primer on natural stone. For silicate or mineral-bonded deep primer, the SPECIAL 500ml variant is necessary – however, it is itself citric acid-based (pH 2–4). On sensitive natural stone, therefore, always test first in an inconspicuous area, keep the exposure time short, and then rinse the area thoroughly with water.
Further Reading
- Identify acrylic, hybrid, or silicate deep primer
- SPECIAL 500ml or pH7 Stick: Which product do I need?
- Deep primer residues on the construction site: Professional tips
Frequently Asked Questions (FAQ)
Is deep primer remover safe for natural stone?
The pH7 Stick is unproblematic for natural stone as it is pH-neutral. The SPECIAL variant is itself citric acid-based (pH 2–4) and should only be used on natural stone after testing in an inconspicuous area and with a short exposure time.
Can I use deep primer remover on sealed parquet?
Yes, with precise and short application. It is important to wipe the area dry promptly afterwards to prevent moisture damage to the wood.
What should I pay attention to with tile joints?
Grout can react more sensitively than the tile itself, especially if it is unsealed. Work precisely and carefully.