Need a natural, granular lime surface that breathes? Cement-based finishing plaster traps moisture, causing wall staining. Pure NHL 3.5 lime, 0–1.4 mm grain size: medium-grained final surface that breathes just like the plaster underneath. This is Kerakoll Biocalce Intonachino Granello.
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Granular, natural surface for lime plaster: medium texture — 0–1.4 mm dolomite limestone and Carrara marble, applied with a trowel
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Cement-based finishing plaster suffocates the breathable wall: no cement here — pure NHL 3.5 lime, the surface breathes just like the underlying layer
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Part of the system: the granular fine plaster of the Biocalce restoration system — for lime base plaster (Intonaco, Zoccolatura) before painting
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Moldy, saltpetre-affected old wall: naturally inhibits mold — B+ and F+ classification, fungus- and bacteria-resistant (CSTB)
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Monument, adobe, old house: natural material matching the wall — lime, stone, and Carrara white marble, for conservation restoration
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Thicker build-up, also levels: up to ≈ 10 mm total thickness (in multiple layers) — not only covers but also levels
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Large surface, lots of hand smoothing: soft, lightweight mix — spreads quickly, workable for a long time, excellent workability
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Closed living space, poor indoor air quality: EC1 plus low VOC emissions — IAQ Active, contributes to healthy indoor air
Properties
| Type |
exterior and interior lime finishing mortar (fine plaster) |
| Function |
medium-grained, breathable surface smoothing for Biocalce plasters |
| Binder |
NHL 3.5 pure natural hydraulic lime |
| Grain size |
0 – 1.4 mm |
| Max. layer thickness |
≈ 10 mm (total) |
| Adhesion (hollow brick) |
≥ 0.2 N/mm² |
| Material requirement |
≈ 1.5 kg/m²/mm |
| Storage |
≈ 12 months, in a dry place |
| Packaging |
25 kg bag |
What is it suitable for?
Substrates: Biocalce lime plasters and restored, breathable plasters — Intonaco, Zoccolatura, Benesserebio. Intact, dry, solid old lime plaster. Monument and historic building restoration.
Spaces: Exterior and interior — facades and interior walls where a grained, natural, breathable surface is desired.
Function in the system: The Biocalce restoration system’s grained fine plaster (3rd layer) — applied over the base plaster, under paint or decorative plaster. Provides a medium-grained texture.
Not suitable for:
- On contaminated, loose, dusty substrate
- On old paint or decorative whitewash
- On strongly salty (interstitial salt content) substrate
- Directly on gypsum-based plaster — first Rasobuild Eco Consolidante surface sealer is required
- As a standalone finished surface — sealed with paint or decorative plaster
The Biocalce restoration system
Biocalce Intonachino Granello is the system’s grained fine plaster. The complete breathable build-up:
| Layer |
Product |
Role |
| 1. Base plaster |
Rinzaffo |
adhesion promoter on compact/non-absorbent substrate |
| 2. Base plaster |
Intonaco; for salty walls Zoccolatura / Benesserebio
|
breathable plaster layer |
| 3. Fine plaster |
Biocalce Intonachino Granello — this product |
grained, natural, paintable surface |
| 3b. Polished top layer |
Tipo “00” — over Fino |
finest, polished surface |
| 4. Surface |
breathable paint or decorative plaster |
final, breathable, colored surface |
Surface (4th layer): breathable paint — Biocalce Tinteggio, Silicato Puro Pittura, indoors also Absolute Paint, on facades Kerakover Silox Pittura; decorative plaster — Silicato Puro, Marmorino, Spatolato.
Which fine plaster is needed?
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Medium-grained, natural (base plaster): Biocalce Intonachino Granello (0–1.4 mm) — this product
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Smooth, fine surface (base plaster): Fino (0–0.5 mm)
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Finest, polished topcoat (over Fino): Tipo „00" (0–0.2 mm)
Frequently asked questions
How does the lime plaster surface become granular and natural?
Medium-grain lime smoothing plaster (fine plaster). On the Biocalce Intonaco base plaster, a 0–1.4 mm grain lime smoothing plaster is applied, giving a granular, natural, yet breathable and paintable surface. Do not apply cement-based fine plaster as it seals the vapor.
Which Biocalce Intonachino do I need — Fino, Granello, or Tipo „00"?
The grain size and layer order are decisive. Granello (0–1.4 mm) for base plaster, for a natural surface. Fino (0–0.5 mm) for base plaster, for a smooth surface. Tipo „00" (0–0.2 mm) is the finest, polished topcoat — applied over Fino.
Is the fine plaster breathable?
Yes. It is made from pure NHL 3.5 lime, without cement — the surface allows vapor to pass through just like the plaster underneath. Thus, the wall’s breathable system is not interrupted at the top layer.
Is it good for moldy, nitrate-affected walls?
Biocalce Intonachino Granello naturally inhibits mold and bacteria — B+ and F+ classification (CSTB). However, do not apply it directly on strongly salty, nitrate-affected surfaces — the salt load must be treated first.
How many m² does a 25 kg bag cover?
Material requirement ≈ 1.5 kg/m² per millimeter. For a 3 mm thick smoothing, a 25 kg bag covers ≈ 5.5 m². The total layer thickness maximum is ≈ 10 mm.
Is Biocalce Intonachino Granello paintable?
Yes, this is the paintable, granular base surface. Seal it with lime-based, breathable paint or fine plaster — this keeps the entire system breathable. Do not apply cement-based or sealed topcoats.
Why did the surface become blotchy and uneven in shade?
The product is natural, lime-based and unpainted — batch shades may vary, and the dried color depends on the substrate's absorbency and the weather. Therefore, use the same production batch on one surface and work evenly.
Can I apply it myself?
Yes — it can be easily applied with a trowel, like a traditional float, soft and workable for a long time. However, the complete restoration of wet, salty walls requires expertise — we also carry out the Biocalce system installation.
