Is your exposed concrete facade cracking and crumbling? CO₂ from the air penetrates the concrete, causing the steel to rust — the concrete flakes off. Geolite Microsilicato silicate geo-paint blocks CO₂ but allows moisture to escape. It resists algae, mold, and weather. This is Kerakoll Geolite Microsilicato.
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Protection of carbonated, aging exposed concrete: blocks CO₂ (sD > 50 m) — slows down steel corrosion, preventing further concrete flaking
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Damp, humid concrete: allows moisture to escape (Class I, SD < 5 m) — moisture does not get trapped, the surface breathes
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Algae, mold, moss on the facade: resists microorganisms and weather — cleaner, more durable surface
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Sealing repaired concrete: can be applied 4 hours after repair with Geolite 10 or 40 — protection is ready within one day
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Even, matte aesthetic: fine-grained, vibrant matte effect — unifies repaired and old concrete
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For exterior and interior use: on facades, balcony undersides, eaves, industrial and residential buildings
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Pure silicate binder: potassium silicate — mineral-based, chemically bonds with concrete, not a film-forming plastic layer
| Type |
Carbonation-inhibiting, breathable concrete geo-paint (exterior and interior) |
| Binder |
Pure potassium silicate (mineral) |
| Performance |
CO₂ barrier sD > 50 m · moisture permeability Class I (SD < 5 m); surface protection EN 1504-2 (C) |
| Material consumption |
≈ 0.35 l/m² (2 coats); 4 l ≈ 11 m² · 14 l ≈ 40 m² |
| Coats |
2 coats, ≈ 12 hours waiting time |
| Packaging |
Bucket 4 l / 14 l (White, Colored A, Colored AA) |
| Storage |
≈ 12 months (not frost-resistant) |
What is it suitable for?
Substrates: Mature, dimensionally stable, dense concrete and reinforced concrete — exposed concrete facades, balcony undersides, eaves, residential, commercial, and industrial buildings. Concrete repaired with Geolite family geo-mortars or traditional mortar. Mature plasters and mineral substrates.
Usage: Breathable, decorative protection against carbonation for new or repaired concrete structures; surface protection for reinforcement systems based on Geolite Gel or Geocalce. For exterior and interior use.
Not suitable for: damp, immature, contaminated, loose, or dusty substrates; moisture-sealed (dehumidifying) plasters; gypsum-based substrates; surfaces exposed to water storage, continuous water contact, or rising damp.
The Geolite concrete repair system
| 1. Substrate preparation |
clean, mature, dense concrete — dimensionally stable substrate |
| 2. Concrete repair |
Geolite 10 / 40 / Geolite — R4 volume restoration |
| 3. Protective topcoat |
Geolite Microsilicato — this product, carbonation-inhibiting, breathable, 2 coats |
Frequently Asked Questions
How can carbonation and flaking of concrete facades be prevented?
With a carbonation-inhibiting, breathable silicate geo-paint that blocks CO₂ but allows moisture to escape. Geolite Microsilicato has a CO₂ diffusion equivalent sD > 50 m — it slows steel corrosion, preventing further concrete flaking. It can be applied in two coats with a roller or brush.
What is carbonation?
Carbonation occurs when CO₂ from the air penetrates the concrete and lowers its alkalinity. This causes the steel reinforcement to lose its protection and start rusting — rust expands, causing the concrete to flake. A CO₂-blocking, breathable geo-paint prevents this.
Why is silicate paint better on concrete than plastic paint?
Silicate (potassium silicate) paint chemically bonds with the concrete and breathes — it allows moisture to escape. Film-forming plastic paint traps moisture behind it, which accumulates and causes peeling. Geolite Microsilicato has Class I moisture permeability (SD < 5 m).
When can repaired concrete be painted?
Concrete repaired with Geolite 10 or Geolite 40 geo-mortar can be painted with Microsilicato after 4 hours. The concrete must be mature and dimensionally stable. The paint seals and unifies the repaired surface within one day.
How much area does one bucket cover?
Material consumption is approximately 0.35 l/m² in two coats on a fine-grained substrate. A 4 l bucket covers about 11 m², a 14 l bucket about 40 m². Rough or absorbent surfaces consume more.
Can it be used indoors?
Yes, Geolite Microsilicato is suitable for both exterior and interior use. It is a breathable silicate coating that works well on indoor concrete surfaces. However, do not use it on surfaces exposed to continuous water contact in wet rooms.
When should I NOT use it?
Do not apply on damp, immature, dusty, or loose concrete, gypsum, or moisture-sealed plaster. It is also unsuitable for surfaces exposed to water storage, continuous water contact, or rising damp. The surface must be clean, dense, and dimensionally stable.
Can I apply it myself?
Yes, it can be applied with a roller or brush in two coats, with about 12 hours waiting time. However, facade work requires scaffolding, consistent technique, and prior concrete repair. We also offer complete facade renovation services.
