8kg
Covers
265–345 sq ft
1 coat, smooth mineral
Best For
A single elevation or a smaller facade renovation in one coarse coat.
COARSE SILICATE FACADE ADHESION BASE · ART. 615
The coarse adhesion base that grips mineral and synthetic facades alike — then takes the silicate finish.
LEINOS 615 UniverSil Facade Paint Coarse — a ready-to-use, fibre-reinforced silicate adhesion base. Its water-glass binder grips mineral render and sound synthetic facades alike, while a 0.4 mm structural quartz slurries hairline cracks into a breathing base for the finish. Thinned with 611 Profi-Fixativ, overcoated with 614. Made in Germany by Reincke Naturfarben.
Grips mineral & syntheticFibre-reinforced · coarse 0.4 mmVapour + CO₂ permeableOvercoated by 614 fine
Mechanism & Use
It grips, structures, and levels — then takes the silicate finish.
A pure water-glass binder and adhesion-promoting additives bond the coat to mineral and synthetic facades alike; a fibre-reinforced coarse quartz gives it body to level minor differences and slurry hairline cracks, and the wall keeps breathing. A mineral adhesion base, not a plastic filler.
01
Pure water-glass adhesion base grips mineral and synthetic facades
The ready-to-use pure mineral water-glass binder, with adhesion-promoting organic additives, bonds this coarse coat to both mineral render and sound synthetic-resin-bound facades — firmly-adhering old dispersion and emulsion coatings, synthetic-resin renders, and WDVS/ETICS insulation. It is engineered as a silicate adhesion coating (Haftbeschichtung): the base that lets a mineral UniverSil system take hold on a facade a pure silicate could not otherwise grip.
02
Fibre-reinforced 0.4 mm quartz levels defects and slurries cracks
A graded 0.4 mm structural quartz and fibre reinforcement give the coat body: it evens minor structural differences full-surface and slurries (zuschlämmt) individual hairline cracks, so the UniverSil fine finish lands on a uniform, sound plane instead of tracing every craze line beneath it.
03
Vapour- and CO₂-permeable — the wall breathes
The mineral coat lets water vapour and CO₂ pass freely, so moisture is never trapped between substrate and finish. Through monsoon wet-and-dry cycles the renovated build-up releases moisture instead of blistering and peeling the way a sealed synthetic base coat can.
04
Mineral, non-flammable, mould- and algae-preventing
It dries to a genuine mineral coating layer, not a plastic film — non-flammable, and alkaline at pH ≈ 11, with an added film protection that together deny mould and algae a foothold. Like every silicate coating it ages by an extremely slow reduction in layer thickness the trade calls chalking (Kreiden) — a material-typical property, not a defect.
Where It Lives
Where 615 Lives
Renovation over old synthetic/emulsion facades
The coarse adhesion base over a sound, firmly-adhering old dispersion, emulsion, or synthetic-resin coating — re-establishing a mineral, breathable, structured surface for the UniverSil Fine 614 colour finish to land on.
Synthetic-resin renders (Kunstharzputze)
A mineral adhesion-and-structure bridge over synthetic-resin render, where a pure mineral character and breathability are wanted but the substrate is not itself mineral.
WDVS/ETICS insulated facades
A coarse, vapour-open mineral base over thermal-insulation composite systems — grips the render coat and evens minor structural differences, keeping the system breathable. Light shades only (HBW > 40) so the insulation does not overheat.
Mineral-render facades
A coarse base on ordinary lime/cement and mineral render over a 610-levelled wall, laying a structured mineral plane that slurries hairline cracks before the fine finish.
Heritage and conservation elevations
Historic plastered facades where a mineral, breathable base coat matters. The coarse silicate adhesion base keeps the old fabric breathing while it structures the surface for a mineral finish.
High-exposure weather elevations
Wind- and rain-driven facades where the durability of the build-up depends on the foundation. A well-bonded, vapour-open coarse base under UniverSil Fine 614 carries the mineral system’s longevity from the base up.
Compliance · Natural Ingredients · EU
Solvent-lean pure-silicate mineral base. No film-forming polymers — a mineral coating layer, not a plastic film.
Three anchors that let architects specify 615 as the coarse adhesion base of a mineral facade renovation without disclaimers.
EU Compliance
VOC 10 g/l
EU limit 30 g/l · Cat. a (water-borne) · Directive 2004/42/EC · solvent-lean mineral coat.
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 UniverSil renovation, synthetic-facade, 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 substrate. All surfaces are prepared per VOB Part C DIN 18363 and the BFS data sheets — clean, firm, dry, and load-bearing. An old synthetic or emulsion coating must be sound and firmly adhering; remove any flaking, glossy, or plasto-elastic coating first. Level deeper cracks and repairs with LEINOS 610 ProfiGrund. Assess doubtful substrates individually and lay a sample area.
Stir thoroughly and sieve. Silicate paint settles and skins in the pail — stir the LEINOS 615 bucket well and sieve the material to remove any dried particles from the rim or lid before use. This material-typical step gives an even, blemish-free coarse coat.
Thin with Profi-Fixativ. Adjust the coat with LEINOS 611 Profi-Fixativ — not water — to suit the substrate and your working method (brush, roller, or airless). The clear water-glass fixativ regulates absorbency and workability without weakening the mineral bond.
Apply the coarse coat full-surface. Work the coat evenly across the whole wall — brush is recommended, roller or airless also work — building the coarse, structured mineral adhesion base. Slurry every hairline crack carefully and smooth the transitions so the surface reads as one uniform plane. Do not apply below +8°C, in direct sun, or on a heated substrate.
Let it dry, protected. Allow at least 12 hours before overcoating; protect the fresh coat from rain, direct sun, and heat while it sets. Silicate base coats need this window to firm up into a sound mineral plane.
Overcoat with the fine finish. UniverSil Coarse is an adhesion base, never a finish — overcoat it with LEINOS UniverSil Facade Paint Fine 614, applied in at least two thin water-thinned coats, which sets the visible facade colour and the weathering surface. 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 before overcoating.
- 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 — stir and sieve the material before use for an even coat.
Coats & Recoating
- One full-surface coarse adhesion and intermediate coat, thinned with 611 Profi-Fixativ as needed.
- Overcoat with UniverSil Facade Paint Fine 614 after at least 12 hours (at 20°C) — the fine coat sets the facade colour.
Cleaning & Storage
- Clean tools, substrate, and clothing immediately and thoroughly with water. Do not let the silicate material set on brushes, rollers, or paddles.
- 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 UniverSil Facade Paint Coarse? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
The coarse adhesion base of the LEINOS UniverSil facade renovation system.
610 ProfiGrund levels deeper cracks; UniverSil Coarse grips and structures the wall, thinned with 611 Profi-Fixativ; UniverSil Fine 614 finishes it in colour. A mineral, vapour-open build-up that mineralises a synthetic facade — the coarse coat is a base, never a finish.
The Coating System
Primer plus topcoat — the full chain.
Coarse Adhesion Base615UniverSil Facade Paint Coarse
Substrate Fit
615 works on — and what it doesn’t.
Suitable
Recommended substrates
- Synthetic-resin-coated facades + firmly-adhering old dispersion/emulsion coatings
- Synthetic-resin renders (Kunstharzputze)
- WDVS/ETICS thermal-insulation composite systems (light shades, HBW > 40)
- Mineral render + lime/cement plaster
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
- Clay (Lehm) and gypsum (Gips) substrates — not compatible with the water-glass chemistry.
- Plastics, glossy, and plasto-elastic surfaces — no absorbent surface for the mineral coat to bond into.
- Salt-loaded or generally non-load-bearing substrates — assess and remediate first.
- Surfaces where water cannot drain and dry off — trapped moisture undermines the mineral build-up.
Use With Care
Working safely with 615
- The product is alkaline (pH ≈ 11) and can irritate skin and eyes. Protect eyes and skin from splashes — wear safety goggles/face protection and gloves during application. Wash any splashes off skin with plenty of water immediately.
- Contains an added film-protection biocide (isothiazolinone film preservative) — may cause an allergic reaction in sensitised individuals. Avoid contact with skin and eyes; the safety data sheet is supplied on request.
- Mask and protect adjacent glass, natural stone, aluminium, and lacquered surfaces — the alkaline material can attack and stain them. Wash off splashes at once with plenty of water.
- Do not breathe vapours, spray mist, or dust. Ensure good ventilation and cover the surroundings of the coating area carefully.
- Keep away from children. Store the sealed pail cool, dry, and frost-free; opened or diluted material is not storable.
Coverage & Pack Sizes
Pick the right pack for the facade.
One full-surface coarse adhesion coat, roughly 33–43 sq ft per kilogram (≈ 0.25 kg/m²). Rough or highly absorbent substrates use more; the figure below is per single coat.
20kg
Covers
660–860 sq ft
1 coat, smooth mineral
Best For
A 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.
Pure Mineral Water Glass
Potassium water-glass — the pure silicate binder, with no silica-sol addition. With adhesion-promoting additives it bonds a mineral coating layer onto both mineral render and sound synthetic-resin coatings and WDVS, becoming a mineral layer of the wall rather than a plastic film. Solvent-lean, water-borne.
Fibre reinforcement + structural quartz (0.4 mm)
Fibres bridge hairline cracks while a graded 0.4 mm structural quartz gives the coat its body and coarse structure — enough to even minor structural differences and slurry individual hairline cracks in one full-surface adhesion coat.
Alkali-resistant, lightfast mineral pigments
Mineral pigments (including titanium-dioxide white) chosen to survive the alkaline binder — the base is tinted to Natural white, Old white, and 200-plus alkali-fast pastel shades, usually close to the 614 finish colour.
Organic additives
A small organic additive fraction for workability and for adhesion to synthetic-resin substrates, without compromising the mineral, vapour-open character of the coat.
Film protection
An added film-protection biocide (isothiazolinone film preservative) that, together with the alkaline pH ≈ 11, helps keep mould and algae off the renovated build-up. The safety data sheet is supplied on request.
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.
- Yes. UniverSil Coarse is a ground and intermediate coat, never a finish — the TDS specifies that it must be overcoated with LEINOS UniverSil Facade Paint Fine 614. Its job is to grip the substrate, structure the surface, and slurry hairline cracks; the fine 614 coat over it sets the visible facade colour and the weathering surface.
- Match the base to the finish. 615 UniverSil Coarse is a pure water-glass silicate adhesion base for the UniverSil renovation system — its adhesion-promoting additives grip sound synthetic-resin and old dispersion/emulsion facades, and it sits under UniverSil Fine 614. 613 ProfiSol Coarse is a sol-silicate coarse ground whose silica-sol binder is aimed at fresh mineral render and premium new-build, and it sits under ProfiSol Fine 612. Both are fibre-reinforced, coarse (0.4 mm), thinned with 611 Profi-Fixativ, and vapour-open. Choose 615 to renovate an existing synthetic or emulsion facade in the UniverSil system; 613 for a fresh mineral or premium build in the ProfiSol system.
- Yes — that is exactly what UniverSil Coarse is for. Its adhesion-promoting additives let the coat bond not only to mineral render but also to sound, firmly-adhering synthetic-resin, dispersion, and emulsion coatings, and to WDVS/ETICS insulation. It re-establishes a mineral, vapour-open, structured base over the old coating, which the UniverSil Fine 614 finish is then applied over. Glossy or plasto-elastic coatings are not suitable — assess doubtful substrates individually and lay a sample area first.
- No. Unlike a synthetic-resin paint, a silicate coating does not form a plastic film — it forms a mineral coating layer, and it ages by an extremely slow reduction in layer thickness that the trade calls chalking (Kreiden). The TDS states this explicitly: chalking is a material-typical property of mineral silicate coatings, not a product defect. It is part of how a mineral facade weathers honestly rather than cracking and peeling.
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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