Funcosil SNW
Colourless, water-repellent impregnation based on silane/siloxane for the hydrophobic protection of porous, mineral building materials.
Funcosil SNW combines a water-based formulation with approximately 10% active substance and excellent penetration properties. The impregnation is suitable for numerous porous mineral facade materials and helps to significantly reduce the absorption of rainwater and driving rain.
Funcosil SNW at a Glance
Professional Water-Based Facade Impregnation
Mineral facades are continuously exposed to rain, driving rain, moisture, frost and temperature fluctuations. Porous building materials can therefore absorb significant amounts of water.
Funcosil SNW has been developed to significantly reduce this water absorption. The impregnation penetrates into the pores of the mineral substrate and provides a water-repellent effect while maintaining the water vapour permeability of the substrate.
The basis of Funcosil SNW is silane/siloxane. The water-based formulation contains approximately 10% active substance and is suitable for application to a wide range of porous mineral building materials.
The Benefits of Funcosil SNW
A professional impregnation for durable hydrophobic protection of suitable mineral substrates.
Highly Water-Repellent
Reduces the absorption of rainwater and driving rain into porous mineral building materials.
Excellent Penetration
The active ingredients can penetrate deeply into the pores of suitable mineral substrates.
Vapour Permeable
The hydrophobic treatment remains water vapour permeable and does not prevent the moisture vapour transport of the mineral substrate.
UV and Alkali Resistant
The product properties are designed for long-term application on suitable mineral facade materials.
Solvent-Free and Odourless
Water-based formulation without a solvent base and, according to the product information, odourless.
PFAS-Free Formulation
According to the current product information, Funcosil SNW is supplied with a PFAS-free formulation.
Applications of Funcosil SNW
Funcosil SNW has been developed for the hydrophobic treatment of porous mineral building materials. The product can be used on facades and other mineral surfaces where reducing water absorption is desired.
Suitable for various porous types of brick, depending on the absorption capacity of the substrate.
For suitable smooth and rough sand-lime brick surfaces.
For suitable mineral render, plaster and stucco surfaces.
For porous mineral building materials with sufficient absorption capacity.
For suitable porous fine- and coarse-pored natural stone.
Also suitable for certain mineral top coats of external thermal insulation systems.
Protection Against Rain and Driving Rain
By reducing the water absorption of the mineral substrate, Funcosil SNW helps protect facades against rain and particularly against driving rain.
A hydrophobically treated facade can also be less susceptible to moisture-related soiling and biological growth. However, the impregnation is not a substitute for resolving structural moisture problems.
Technical Properties of Funcosil SNW
The most important technical characteristics of the product are summarised below.
| Property | Funcosil SNW |
|---|---|
| Product type | Water-based hydrophobic impregnation |
| Active ingredient | Silane / siloxane |
| Active substance content | approx. 10% by mass |
| Carrier | Water |
| Appearance | Milky liquid |
| Density | approx. 1.0 kg/l |
| pH value | approx. 7 |
| Solvent | Solvent-free |
| Odour | Odourless |
How Much Funcosil SNW Do You Need?
Consumption is primarily determined by the porosity and absorption capacity of the substrate. The quantities below are guideline values.
How to Apply Funcosil SNW
Correct application is essential for a uniform and effective impregnation. Funcosil SNW is applied without pressure and to saturation according to the flooding method.
Check
Check the substrate, absorption and structural condition.
Clean
Ensure a clean and suitable substrate.
Apply
Apply without pressure and to saturation. Avoid spraying.
Work In
Work in immediately with a block brush.
Repeat
Repeat wet-on-wet at least twice until saturation is achieved.
Step-by-Step Application
1. Carry Out a Test Area
Test a representative area of approximately 1–2 m² first. Check absorption, consumption and the final appearance.
2. Prepare the Substrate
The substrate must be clean and free from loose material. Repair cracks, defective joints and other defects beforehand.
3. Apply to Saturation
Apply the product without pressure and avoid spraying. Work evenly from top to bottom.
4. Repeat Wet-on-Wet
Repeat the treatment at least twice wet-on-wet until the substrate no longer absorbs additional product.
Funcosil SNW in Different Pack Sizes
For smaller renovation projects, larger facade projects and professional applications, Funcosil SNW is available in different pack sizes.
Important Before Impregnation
Facade impregnation can only function properly when the substrate is suitable and structural moisture problems have been resolved.
- Always check the absorption capacity of the substrate.
- Repair cracks, defective joints and other defects beforehand.
- Resolve leaks and other structural moisture problems first.
- Always carry out a test area before treating the entire facade.
- Protect adjacent surfaces that must not come into contact with the product.
- Always follow the current technical product information and safety data sheet during application.
Frequently Asked Questions About Funcosil SNW
What is Funcosil SNW?
Funcosil SNW is a water-based, colourless hydrophobic impregnation based on silane/siloxane. The product contains approximately 10% active substance and has been developed for porous mineral building materials.
Is Funcosil SNW water-based?
Yes. Water is the carrier of the product. Funcosil SNW is solvent-free and, according to the product information, odourless.
Which materials is Funcosil SNW suitable for?
Among others, suitable porous brickwork, sand-lime brick, mineral renders and plasters, aerated concrete, natural stone and certain mineral facade finishes.
How much Funcosil SNW do I need?
Consumption depends on the porosity and absorption capacity of the substrate. As a guideline, consumption for the mineral substrates mentioned above ranges from approximately 0.7 to 1.7 litres per m². Actual consumption must always be determined on a test area.
How is Funcosil SNW applied?
The product is applied without pressure and to saturation. Spraying should be avoided. The treatment is repeated at least twice wet-on-wet until the substrate is saturated.
Why is a test area important?
Because absorption, consumption and the final appearance depend strongly on the type and condition of the substrate. A test area provides an indication of the actual consumption and final result before the entire surface is treated.
Funcosil SNW
Water-based facade impregnation based on silane/siloxane for the hydrophobic protection of porous mineral building materials.
Technical properties, applications and consumption figures are based on the available product information. Always check the current technical data sheet and safety data sheet before application.
