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Substrate preparation by sanding: The perfect base for your floor
A new floor covering or a high-quality coating should not only look good, but above all last a long time. The decisive prerequisite for this is often hidden from view: a perfectly prepared subfloor. The Substrate preparation by sanding of screed and concrete is one of the most important and most frequently used techniques for creating an optimum basis for subsequent work. Whether before coating, filling or laying - professional floor floor grinding with modern diamond technology ensures the adhesion and durability of the entire floor structure. As your experienced specialists for flooring systems, operating throughout Germany, we attach great importance to this critical work step.
Why the right preparation is crucial: liability is key
Even the best coating or the most expensive flooring cannot function permanently on an unsuitable substrate. Inadequate preparation inevitably leads to problems such as
- Poor adhesion: Coatings or adhesives detach from the substrate.
- Bubble formation: Trapped air or moisture reacts under the new layer.
- Cracking: Stresses due to insufficient bonding or cracks penetrating from the substrate.
- Visual defects: Unevenness shines through the surface.
- Shortened service life: The entire system fails prematurely.
Substrate preparation by sanding aims to prevent precisely these problems by creating a defined surface condition - clean, stable, dry and with the right grip.
What sanding does as substrate preparation
Professional screed grinding or concrete grinding fulfills several important tasks at the same time:
- Cleaning the surface: Removal of adhering dust, dirt, light traces of oil, paint or plaster residues.
- Removal of weak or adhesion-disturbing layers: Reliable sanding of cement slurry (sintered layer), efflorescence, old thin coatings or stubborn adhesive residues. This exposes the solid, load-bearing core of the substrate.
- Creation of an adhesive profile: Sanding creates a defined surface roughness ("profile"). This enlarged surface enables optimum mechanical bonding (adhesion) for primers, fillers, adhesives or floor coatings. Keyword: creating a primer, roughening the surface.
- Leveling (conditional): Removal of minor unevenness, burrs or transitions for a more even surface in accordance with DIN 18202.
Professional diamond grinding: Our technology
We rely on modern equipment for the best results when preparing floors by sanding:
- Powerful floor sanding machines: Depending on the requirements and surface size, we use different types of machines (e.g. single-disc, three-disc or planetary head sanders).
- Specific diamond tools: The key to success lies in choosing the right diamond segments (grain size and bond), matched to the hardness of the concrete or screed and the desired grinding pattern/removal target. Keyword: Diamond grinding.
- Low-dust working: Our machines are connected to powerful industrial vacuum cleaners as standard. This enables extremely low-dust (virtually dust-free) sanding, which protects people, the environment and neighboring areas.
When is sanding the right preparation method?
Grinding concrete and screed is the standard preparation method in many cases:
- Before almost all floor coatings (EP, PU, PMMA etc.).
- Before applying leveling or filling compounds.
- After removing old coverings to remove adhesive residues.
- For leveling slight unevenness before laying the floor covering.
- As a preparatory sanding for exposed screed or polished concrete floors.
Differentiation: In the case of very uneven surfaces or the need to remove thicker layers, milling or shot blasting can be more efficient - we will advise you on the best technique for your specific substrate.
Your nationwide partner for professional surface preparation by sanding
We offer you:
- Expert assessment of your concrete or screed substrate.
- Selection of the optimum grinding technology and diamond tools.
- Efficient and precise execution by experienced employees.
- Low-dust work for a clean construction site.
- Reliable service nationwide, often as part of our screed or coating work.
Conclusion: Grinding - basic work for lasting floor quality
Professional substrate preparation by sanding is not a minor matter, but a crucial investment in the quality and durability of your floor. It creates the necessary conditions for lasting adhesion and a flawless end result for subsequent work.
Optimal basis for your floor? We sand for you!
Do you need a perfectly prepared substrate for your new screed, coating or flooring? Contact us for advice and a quote for professional screed and concrete sanding. We are there for you nationwide - by phone, email or WhatsApp.
Frequently asked questions (FAQ)
It is crucial for the adhesion between the substrate and the next layer (screed, primer, coating, adhesive). It eliminates weak spots, impurities and creates the right surface profile for a durable bond and a smooth end result.
Almost always, yes. This is the only way to ensure a clean, stable, non-slip surface for optimum adhesion. Cement slurry on new concrete/screed in particular must be removed.
No, when professionally executed with modern floor sanding machines and connected industrial vacuum cleaners, the work today is extremely low-dust (often referred to as"dust-free sanding").
Milling is used to remove thicker layers or to create grooves and is a coarser process. Grinding is a finer process for processing the surface - for smoothing, roughening or grinding off thinner layers or impurities.