Remmers Funcosil BI 5L – Hydrophobic Impregnation
Content: 5 liters (sufficient for approx. 3–15 m², depending on substrate absorbency)
Durability: > 10 years
Shelf life: minimum 24 months
Product Description
Remmers Funcosil BI 5L is a colorless, solvent-based hydrophobic impregnation based on silane/siloxane. It is specially designed for concrete, precast concrete, exposed aggregate concrete, and fiber cement. The low viscosity ensures deep penetration into pores and capillaries, forming a water-repellent zone without sealing the surface.
It provides long-lasting protection against moisture, driving rain, and de-icing salt damage while preserving the natural appearance of the material. Ideal for smaller projects, detailed applications, or maintenance work.
Applications
Funcosil BI is suitable for:
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Concrete and precast concrete façades
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Parking garages, galleries, and balconies
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Bridges and infrastructural concrete structures
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Fiber cement façade panels
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Protection against chloride penetration and de-icing salt
Not suitable for solvent-sensitive materials such as polystyrene or bituminous substrates. Substrate must be sufficiently absorbent for optimal performance.
Properties
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Water-repellent and moisture-proof
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Breathable and vapor-permeable
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Deep-penetrating silane/siloxane technology
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Increases frost and de-icing salt resistance
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UV and alkali resistant
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Colorless, no gloss formation
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Solvent-based for optimal penetration
Consumption
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Concrete: approx. 0.3–0.5 l/m²
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Aerated concrete: approx. 0.8–1.0 l/m²
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Fiber cement: approx. 0.3 l/m²
Always determine exact consumption on a 1–2 m² test area.
Application
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Substrate must be clean, dry, and dust-free.
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Repair damages, cracks, or defective joints beforehand.
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Apply without pressure by flowing or low-pressure spray. Avoid misting.
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Apply multiple times wet-on-wet until saturation is visible.
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Remove excess material within 1 hour using Thinner V 101.
Application temperature: +10°C to +25°C (material, air, and substrate).
Protect treated surfaces from rain, sunlight, and wind during drying.
Technical Data
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Active ingredient: silane/siloxane
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Active substance content: approx. 20%
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Density (20°C): approx. 0.78 g/cm³
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Flash point: approx. 40°C
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Appearance: colorless, liquid
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Solvent base: dearomatized hydrocarbons
Storage and Safety
Store in original unopened container, cool and frost-free. Once opened, limited shelf life.
Use appropriate protective equipment (gloves, safety glasses, respiratory protection when spraying). Dispose of residues and empty containers according to local regulations.
Summary
Remmers Funcosil BI 5L is a professional, solvent-based concrete impregnation providing durable protection against moisture, driving rain, and de-icing salts. Its deep penetration and breathable nature ensure long-term protection without altering the concrete’s appearance. Ideal for smaller projects, maintenance, and detail applications.
