5kg
Covers
650–1350 sq ft
1 coat, smooth mineral
Best For
One elevation, consolidating raw walls, or thinner stock for the facade system.
PURE WATER-GLASS CONSOLIDATING PRIMER · ART. 611
The clear water-glass primer that firms a raw wall — so the facade system lands on solid ground.
LEINOS 611 Profi-Fixativ — a clear, liquid, pure mineral water glass (potassium silicate) with 0% organic components. It soaks into raw, absorbent, or friable mineral walls to consolidate them, and doubles as the 10–20% thinner for ProfiGrund 610 and the ProfiSol / UniverSil facade paints. Solvent-free, VOC 0 g/l, non-flammable, vapour- and CO₂-permeable, alkaline pH 11, mould- and algae-preventing. The consolidating foundation of the LEINOS mineral facade system. Made in Germany by Reincke Naturfarben since 1985.
0% organics · pure water glassConsolidates + thinsVapour + CO₂ permeableMould- & algae-preventing
Mechanism & Use
It soaks in, firms the wall, and regulates the draw.
Pure water glass silicifies into a raw, absorbent substrate and consolidates it — no film, no organics. The same clear fixativ thins the filler-primer and facade paint, so the whole mineral system goes on evenly.
01
Silicifies into the wall — consolidates raw, absorbent, friable substrates
Highly silicification-capable pure water glass soaks into a raw, highly absorbent, or slightly friable mineral wall and firms it into a sound, load-bearing base. It becomes a mineral part of the substrate rather than a film on top — the difference between a wall the facade system can grip and one that keeps dusting and drinking.
02
One product, two jobs — consolidating primer and 10–20% thinner
The same clear fixativ that consolidates the substrate is also the thinner for ProfiGrund 610 and the ProfiSol / UniverSil facade paints. Adding 10–20% regulates the wall’s draw and the paint’s workability, so one mineral chemistry runs through primer, filler, and topcoat instead of an alien thinner breaking the system.
03
Pure mineral — 0% organics, nothing to trap moisture
No film, no organic additives, no biocides. The consolidated wall stays vapour- and CO₂-permeable, so moisture is not sealed in between substrate and facade paint and the build-up does not blister or peel through monsoon wet-and-dry cycles the way a synthetic sealer can.
04
Alkaline pH 11 — mould- and algae-preventing, UV- and weather-stable
The high-pH mineral surface denies mould, algae, and fungi a foothold from the foundation up — protection built into the chemistry, not a leaching biocide. Non-flammable, with long-lasting UV and weathering resistance that carries into the durability of the whole facade system.
Where It Lives
Where 611 Lives
Consolidating raw, highly absorbent plaster
A raw, thirsty, or slightly friable mineral wall that dusts and drinks would rob the facade paint of its binder and telegraph patchy absorbency. One saturating Profi-Fixativ coat soaks in, firms the surface, and regulates the draw, so the filler-primer and facade paint land on a sound, even base.
Thinning ProfiGrund and the facade paints
The same clear fixativ is the 10–20% thinner for ProfiGrund 610 and the ProfiSol / UniverSil fine facade paints. One mineral chemistry regulates workability from the foundation coat to the topcoat — no alien thinner to break the silicate system.
Clay (Lehm) walls before a mineral topcoat
Where the fibre-reinforced ProfiGrund is not used, the clear fixativ is. On clay (Lehm) — after the equalising moisture has dried and loose grain is removed — it is primed saturatingly in several coats to consolidate the surface for a mineral finish.
Air-lime plaster before overcoating
Air-lime plaster is left to harden, then Profi-Fixativ consolidates it and regulates its absorbency so the mineral topcoat bonds evenly instead of flashing over soft, thirsty patches.
WDVS/ETICS and sound old coatings
On thermal-insulation composite systems and firmly adhering old coatings — cleaned and dried through — the fixativ firms and evens the surface before ProfiGrund and the facade paint, keeping the whole build-up vapour-open.
Heritage & conservation mineral facades
Historic plastered elevations where a vapour-open, mineral, biocide-free foundation matters. Profi-Fixativ consolidates the old surface without a sealing film and keeps the facade breathing — a conservation-grade base for a mineral topcoat.
Compliance · Natural Ingredients · EU
Pure mineral water glass. 0% organics, no biocides, no film.
Three anchors that let architects specify 611 as the consolidating foundation of a mineral facade system without disclaimers.
Institutional Pledge
InVeNa Member
Reincke Naturfarben — full-ingredient-disclosure pledge for natural building products.
The TDS is downloadable below. Where you need a written specification packet — full ingredient declaration, VOC compliance letter for an architect’s submittal, or a facade build-up compatibility statement for a ProfiGrund / ProfiSol / UniverSil or WDVS/ETICS system — it is available to architects and contractors on request. The safety data sheet is supplied on request. Use Get Expert Advice above.
Read The Full TDSStep by Step
How to Apply
Prepare the mineral substrate. All surfaces are prepared per VOB Part C DIN 18363 — the substrate must be mineral, porous, clean, firm, dry, and load-bearing. Remove any sinter skin on lime and cement plaster (P1–P3); let air-lime plaster harden. Assess doubtful substrates individually and lay a sample area first.
Stir thoroughly and sieve. Water glass skins on the rim and lid — stir the LEINOS 611 canister well and sieve the clear liquid to remove any dried particles before use. This material-typical step gives an even, blemish-free primer coat.
Prime saturatingly. Work the clear fixativ into the raw, absorbent wall so it soaks in and consolidates — brush (recommended), roller, or airless. Never build a sealed, glassy over-coat (Verglasung); the fixativ must firm the surface, not form a film. Clay (Lehm) and highly absorbent walls take several saturating coats.
Or use it as the thinner. The same clear fixativ is ProfiGrund’s own 10–20% thinner and the thinner for the ProfiSol and UniverSil facade paints — add 10–20% to suit the substrate and your working method. It regulates absorbency and workability without weakening the mineral bond.
Let it firm, protected. Allow at least 12 hours before overcoating; protect the fresh coat from rain, direct sun, and heat while it sets. Do not apply below +8°C. The consolidated wall needs this window to firm into a sound mineral base.
Build the facade system over it. Profi-Fixativ is a foundation, never a finish — level the wall with ProfiGrund 610, then finish with ProfiSol Facade Paint Fine 612 or UniverSil Facade Paint Fine 614. Clean tools, substrate, and clothing immediately with water.
Application Conditions
- Apply at surface and air temperature above +8°C; do not apply in direct sun or on heated substrates.
- Protect fresh coats from rain; allow at least 12 hours to firm before overcoating.
- Avoid a sealed, glassy over-coat (Verglasung) — the fixativ must soak in and consolidate, not form a film.
- Product is alkaline (pH ≈ 11) — mask and protect glass, natural stone, aluminium, and lacquered surfaces; wash off splashes at once with water.
- Silicate materials tend to dry on the rim and lid — sieve the material before use for an even coat.
Coats & Recoating
- One saturating primer coat on smooth, normally absorbent substrates; clay (Lehm) and highly absorbent walls take several saturating coats.
- Overcoat with ProfiGrund 610, then ProfiSol Facade Paint Fine 612 or UniverSil Facade Paint Fine 614, after at least 12 hours (at 20°C).
Cleaning & Storage
- Clean tools, substrate, and clothing immediately and thoroughly with water. Do not let the water-glass material dry on brushes or in the sieve.
- Store cool, dry, sealed, and frost-free. Shelf life (unopened): at least 12 months. Opened containers and diluted material are not storable.
First time with Profi-Fixativ Water-Glass Primer? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
The consolidating foundation of the LEINOS facade systems.
Profi-Fixativ firms and regulates the raw wall and thins the coats; ProfiGrund levels it; ProfiSol or UniverSil fine facade paint finishes. One mineral, vapour-open chemistry throughout — 611 is a foundation, never a finish.
The Coating System
Primer plus topcoat — the full chain.
Consolidate + Thin611Profi-Fixativ
Substrate Fit
611 works on — and what it doesn’t.
Suitable
Recommended substrates
- Lime + cement plaster (P1–P3, sinter skin removed)
- Air-lime plaster (hardened) and clay (Lehm) — saturating coats
- Sound, load-bearing existing coatings
- WDVS/ETICS thermal-insulation composite systems
Honest Limits
Where to use a different product
- Wood and wood-based materials — the alkaline silicate stains and will not bond. Use the LEINOS wood-finish line instead, starting with LEINOS 290 Interior Hardwax Oil
- Gypsum (Gips) substrates — not compatible with the water-glass chemistry.
- Plastics, glossy, and plasto-elastic surfaces — no absorbent mineral surface to soak into.
- Salt-loaded, efflorescent, or generally non-load-bearing substrates — assess and remediate first.
- Any surface where the fixativ would form a sealed glassy film (Verglasung) instead of soaking in — and surfaces where water cannot drain and dry.
Use With Care
Working safely with 611
- GHS07 “Warning”: causes skin irritation and serious eye irritation, and may irritate the respiratory tract. Wear safety goggles/face protection and gloves during application; ensure good ventilation and avoid breathing spray mist.
- The product is alkaline (pH ≈ 11). Wash any splashes off skin with plenty of water immediately; on eye contact rinse cautiously with water for several minutes.
- Mask and protect adjacent glass, natural stone, aluminium, and lacquered surfaces — the alkaline water glass can attack and stain them. Wash off splashes at once with plenty of water.
- Keep away from children. Cover the surroundings of the coating area carefully.
- Store the sealed canister cool, dry, and frost-free. Opened or diluted material is not storable; dispose of dried residues with construction waste, liquid residues per local regulations.
Coverage & Pack Sizes
Pick the right pack for the wall.
Roughly 0.04 kg/m² per coat on smooth, normally absorbent substrates (≈ 270 sq ft per kilogram). Raw, friable, or highly absorbent walls drink more and may need several saturating coats; the figure below is per single coat.
10kg
Covers
1300–2700 sq ft
1 coat, smooth mineral
Best For
Full building envelope or a multi-facade renovation.
sq ft
Enter your area to see how much material — and the most efficient pack mix — you’ll need for 1 coat.
Related Work
Mineral surface projects from our portfolio
Documented mineral surface projects. Captions show which LEINOS finish was used.
Full Declaration
Composition
Every ingredient declared on the label. The Trust Hub explains what each one does and the standards behind it.
Mineral Water Glass (potassium silicate)
The sole binder — clear, liquid potassium water glass. It soaks into an absorbent mineral wall and silicifies into it, consolidating the surface as a mineral part of the substrate rather than a film on top. Solvent-free, water-borne.
Water
The only carrier. Profi-Fixativ is water-borne and water-thinnable, ready to use as a primer and as the 10–20% thinner for the ProfiGrund filler-primer and the facade paints.
Zero Organic Additives
0% organic components (per VOB/C DIN 18363 2.4.1) — no film-forming polymers, no preservatives, no biocides. The purity is what keeps the coat vapour-open and mineral.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- It depends on the condition. Sound, non-chalking, well-bonded dispersion coatings can usually be primed with LEINOS Mineral Plaster Primer 622 first — the primer creates a uniform mineral base for the topcoat. Flaking, chalking, or oil-based finishes must be fully removed back to a sound mineral substrate.
- Yes. LEINOS mineral wall paints are fully breathable (vapour-permeable), allowing moisture to pass through the wall structure naturally.
- The surface must be clean, dry, and structurally sound. New plaster must be fully cured (typically 4 weeks). Prime with the recommended mineral primer.
- They do different jobs and are often used together. 611 Profi-Fixativ is a clear, liquid pure-water-glass primer with no body — it soaks into a raw, absorbent, or slightly friable substrate to consolidate and regulate it, and it also thins ProfiGrund by 10–20%. 610 ProfiGrund is a fibre-reinforced quartz filler with body — it levels hairline cracks, plaster repairs, and structural differences full-surface. On a typical renovation: 611 firms and evens the raw wall, ProfiGrund levels it into a uniform plane, then the ProfiSol or UniverSil fine facade paint finishes.
- Yes. Profi-Fixativ is a consolidating foundation, never a finish. Its job is to firm the substrate and regulate its absorbency; it must be overcoated with the LEINOS filler-primer (ProfiGrund 610) and the fine facade paint (ProfiSol 612 or UniverSil 614). On its own it is not a weathering surface.
- Yes — this is one of the jobs where the clear fixativ is used and the fibre-reinforced ProfiGrund is not. On clay (Lehm), let the equalising moisture dry, remove loose grain, and prime saturatingly in several coats so the fixativ consolidates the surface. Avoid building a sealed, glassy film (Verglasung); the fixativ must soak in.
- Silicate coatings form no plastic film — they age by an extremely slow reduction in layer thickness, which the trade literature calls chalking (Kreiden). It is a material-typical property of every mineral silicate coating, not a product defect. For an even coat, stir the material thoroughly and sieve it before use to remove any dried particles from the rim or lid.
For Architects & Specifiers
Downloads
Technical and safety documents — citable in project specifications.
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Written by the LEINOS India technical team, in collaboration with
Reincke Naturfarben R&D, Lower Saxony.
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