Smoothing Agent for Silicone – Clean Joints Without Skin Irritation
The silicone smoothing agent is the ideal solution for professionally finishing fresh silicone joints. It ensures a smooth, even joint surface – without loss of gloss or washing out color pigments.
Thanks to its skin-friendly formula, the agent is especially user-friendly: The water-based solution contains surfactants, is non-degreasing, and dermatologically tested – perfect for regular use in professional trades.
Suitable for smoothing the following sealants:
- Fresh silicone joints, indoors and outdoors
- Polyurethane sealants (PU)
- MS hybrid polymer sealants
- Connection and expansion joints (indoor and outdoor)
- Sealing work in bathrooms, around washbasins, kitchen joints, and glass profiles
Application instructions:
- Mixing ratio: 2 parts smoothing agent, 1 part water
- Not suitable for natural stone such as marble
- 250 ml liquid
- Compatibility confirmed by in-vivo testing (Fresenius Institute)
This silicone smoothing agent stands out due to its ease of use, reliable results, and excellent skin tolerance – an indispensable tool for precise joint finishing.
Silicone Smoothing Agent: Application, Effect & Practical Tips
What is a silicone smoothing agent used for?
A silicone smoothing agent is used to achieve smooth and even sealant joints.
After applying silicone or similar elastic sealants, the agent ensures a neat finish without damaging or discoloring the material. It prevents tools from sticking to the sealant and allows for controlled joint shaping, especially for connection and movement joints indoors and outdoors.
Can this smoothing agent be diluted with water?
Yes – this smoothing agent is water-dilutable, usually at a 2:1 ratio.
Depending on concentration, the ready-to-use agent can be diluted with water to adjust its viscosity and surface behavior. For this product, a ratio of two parts smoothing agent to one part water is recommended for optimal results and economical use.
Is the smoothing agent skin-friendly?
Yes – it is dermatologically tested and gentle on skin.
This professional-grade agent contains no degreasing substances and has been dermatologically tested. Its skin compatibility allows safe use without gloves – especially important for regular use by tradespeople.
Can I use this smoothing agent on natural stone?
No – it is not suitable for natural stone such as marble.
When used on sensitive materials like marble or other porous stones, it may cause stains or unwanted reactions. For those surfaces, use a stone-compatible smoothing agent to avoid damage.
Does it affect the gloss or color of silicone?
No – a quality agent maintains gloss and doesn’t leach pigments.
This product is specifically designed to preserve the visual quality of the sealant. Unlike aggressive soap-based solutions, it retains the silicone’s color intensity and results in clean, professional joints.
How should it be stored?
Store in a cool, dry place, tightly sealed.
To preserve product quality, store between +5 °C and +25 °C, away from sunlight and frost. Always keep the container tightly closed to prevent evaporation or contamination. When stored properly, the product has a long shelf life.
Which silicone is ideal for use with this smoothing agent?
OTTOSEAL® S 100 is a great choice for sanitary joints.
The
transparent OTTOSEAL® S 100 (Art.-No. 13100) is a high-quality, acetate-based, 1-component silicone made for bathrooms, showers, and kitchens. It offers excellent form stability, smooth finish, and long-lasting elasticity. Combined with a suitable smoothing agent, it delivers clean, hygienic, and visually perfect joints.
Do you have any questions on this item?
