Need a smooth, paintable surface for breathable lime plaster? Cement putty seals moisture — causes spotting, paint peeling. Pure NHL 3.5 lime, 0–0.5 mm grain: smooth, paintable surface that breathes just like the plaster underneath. This is Kerakoll Biocalce Intonachino Fino.
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Smooth, paintable surface on lime plaster: fine, even smoothing — 0–0.5 mm Carrara marble and quartz sand, applied with a trowel
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Cement putty suffocates breathable plaster: 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 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+ rating, fungus and bacteria resistant (CSTB)
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Monument, adobe, old house: natural material matching the wall — lime and Carrara white marble, for conservation restoration
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Large surface, lots of manual smoothing: soft, lightweight mix — quickly spreadable, long working 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
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Finish: breathable, lime-based paint or noble plaster provides the final surface — Intonachino Fino is the paintable base
Properties
| Type |
exterior and interior lime finishing mortar (fine plaster) |
| Function |
smooth, breathable surface finishing for Biocalce plasters |
| Binder |
NHL 3.5 pure natural hydraulic lime |
| Grain size |
0 – 0.5 mm |
| Max. layer thickness |
≈ 5 mm (total) |
| Adhesion (hollow brick) |
≥ 0.3 N/mm² |
| Material requirement |
≈ 1.6 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. Undamaged, dry, solid old lime plaster. Monument and historic building restoration.
Spaces: Exterior and interior — facades and interior walls where a smooth, breathable, paintable surface is desired.
Function in the system: The Biocalce restoration system’s fine plaster (3rd layer) — applied over the base plaster, under paint or decorative plaster. Provides a smooth, fine surface.
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 needed
- Standalone, finished final surface — sealed with paint or decorative plaster
The Biocalce restoration system
Biocalce Intonachino Fino is the system’s 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 Fino — this product |
smooth, paintable surface |
| 3b. Polished top layer |
Tipo “00” — above 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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Smooth, fine surface (base plaster): Biocalce Intonachino Fino (0–0.5 mm) — this product
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Medium-grain, natural (base plaster): Granello (0–1.4 mm)
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Finest, polished topcoat (over Fino): Tipo “00” (0–0.2 mm)
Frequently asked questions
How does lime plaster become smooth and paintable?
With lime finishing plaster (fine plaster). On the Biocalce Intonaco base plaster, a fine-grained lime finishing plaster is applied — 0–0.5 mm — which provides a smooth, paintable, and breathable surface. Do not smooth with cement-based putty as it seals the vapor.
Which Biocalce Intonachino do I need — Fino, Granello, or Tipo “00”?
Grain size and layer order are decisive. Fino (0–0.5 mm) for base plaster, for a smooth surface. Granello (0–1.4 mm) for base plaster, for a natural 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 smooth 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 Fino naturally inhibits mold and bacteria — B+ and F+ rating (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 ≈ 1.6 kg/m² per millimeter. For a 2 mm thick smoothing, one 25 kg bag covers ≈ 7.8 m². The total layer thickness is a maximum of ≈ 5 mm.
Is Biocalce Intonachino Fino paintable?
Yes, this is the paintable 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.
