HMK R155 Intensive Cleaner – Acid-Free Natural Stone Cleaner for Deep Core Cleaning
Heavy soiling, old care films, grease deposits, or construction dirt often cannot be completely removed with normal maintenance cleaners. Great caution is required, particularly with marble, limestone, travertine, or concrete ashlar, as acidic cleaners can permanently damage the surface. HMK R155 Intensive Cleaner is an acid-free, mild alkaline special cleaning concentrate for natural and artificial stone indoors and outdoors.
It removes construction dirt, old care product residues, grease and oil films, light limescale deposits, and self-shining layers in no time. This makes HMK R155 perfectly suited for periodic deep cleaning of heavily used surfaces as well as for optimal preparation before subsequent impregnation, sealing, or other protective treatments.
Advantages and Product Features at a Glance:
- Acid-free: Absolutely safe and suitable for sensitive natural stones such as marble, limestone, and travertine.
- Mild alkaline concentrate: Extremely economical to dose and flexibly adjustable depending on the degree of dirt.
- Powerful cleaning action: Removes construction grime, grease and oil films, old care films, and self-shining wax coats.
- Universally applicable: For natural stone, artificial stone, concrete ashlar, terrazzo, clinker, terracotta, and cement screed.
- Indoors and outdoors: Reliable performance for both indoor and outdoor areas.
- Flexible application: Can be processed either manually or mechanically.
- Perfect basis: Ideal for preparing surfaces prior to impregnation or sealing.
- High coverage: Approx. 10–30 m² per litre of concentrate.
Technical Data and Application Instructions:
- Product Type: Mild alkaline special cleaning concentrate
- Application: Intensive core deep cleaning of natural stone, artificial stone, and mineral coverings
- pH Value: Approx. 8.5 in concentrate
- Dilution: Dilutable with clear water from 1:2 to 1:10 depending on the level of dirt
- Contact Time: Approx. 10 minutes (important: never allow the cleaner to dry on the surface)
- Coverage: Approx. 10–30 m²/litre
- Processing Temperature: +12 °C to +25 °C
- Properties: Liquid, colourless, with a characteristic odour
- Area of Application: Indoors and outdoors (manually and mechanically processable)
Important Practical Tips:
Before full-surface application, you should always create a sample test area to accurately check material compatibility, cleaning effect, and consumption. Any existing underfloor heating must be switched off in good time. The covering must be naturally cold and dry; highly absorbent surfaces should be pre-wetted with clear water before cleaning.
Apply the diluted HMK R155, agitate with a brush, scrubbing brush, or a matching nylon pad from the Karl Dahm range, and let it take effect for approx. 10 minutes. Afterwards, mechanically agitate again, absorb the dissolved dirty solution, and rinse the surface thoroughly with clear water. Reliably protect surfaces not to be treated (such as glass, walls, furniture, plastics, or painted surfaces). Before a subsequent protective treatment, wait at least 1 to 2 days until the surface is sufficiently dry (residual moisture 2 to 4%). Always wear protective gloves and eye protection during application and ensure good ventilation in interior rooms.
FAQ – Frequently asked questions about HMK R155 Basic Cleaner
Why is an acid-free natural stone cleaner important?
Many natural stones such as marble, limestone, or travertine are extremely sensitive to acids.
Acidic cleaners can cause matte spots, chemical burns, or permanent surface damage. HMK R155 is acid-free and therefore the material-safe and secure choice for calcareous natural and artificial stones.
For which materials is HMK R155 suitable?
HMK R155 is suitable for marble, granite, limestone, travertine, terrazzo, concrete ashlar, slate, quartzite, clinker, and cement screed.
Surface textures such as polished, honed, flamed, brushed, or rough-cleft can also be cleaned with it without any problems. A sample area should always be prepared before full-surface application.
What types of dirt does HMK R155 remove?
The intensive cleaner dissolves construction grime, old care product residues, grease films, oil films, self-shining layers, and light limescale deposits.
It is ideally suited for periodic deep core cleaning and renovation work. For heavy cementitious residues, a special cement film remover may be required depending on the covering.
Can HMK R155 be used outdoors?
Yes, HMK R155 is fully suitable for indoor and outdoor surfaces.
Outdoors, it can be used on terraces, stairs, entrance areas, or natural stone pavements. Do not process in direct sunlight and do not allow the cleaner to dry.
How is HMK R155 correctly diluted?
Depending on the contamination, HMK R155 is diluted with water at a ratio of 1:2 to 1:10.
For extremely stubborn dirt, the concentrate can also be used pure. The appropriate dosage should be checked beforehand on a sample area.
Does HMK R155 need to be rinsed off after application?
Yes, the dissolved dirty solution must be completely absorbed after the contact time.
Subsequently, the surface is washed thoroughly with clear water. This completely removes all cleaner residues and prepares the surface perfectly for further treatments.
Can HMK R155 be used before impregnation?
Yes, HMK R155 is excellent for deep-acting preparation before impregnation or sealing.
Old care films and dirt are reliably removed so that the subsequent protective treatment can be absorbed more evenly and deeply. After cleaning, the surface should dry for at least 1 to 2 days.
What protective equipment is required?
Protective gloves and eye protection should be worn as standard during processing.
The concentrated cleaner can cause skin and eye irritation. In closed rooms, adequate ventilation must also be ensured.
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