What are silicone sealants and what are they used for?
Silicone sealants are used for elastic joints where permanent sealing and high movement accommodation are required. They are particularly resistant to moisture, temperature fluctuations, and aging, making them ideal for applications in sanitary, construction, and assembly areas.
In this category, you will find high-quality silicone sealants for professional and private applications – from sanitary silicone to natural stone silicone and universal silicone.
Areas of application for silicone sealants
Silicone is used wherever materials are subject to movement or are permanently exposed to moisture.
Typical areas of application:
- Bathroom, shower, toilet and sanitary facilities
- Kitchen, sinks and worktops
- Glass, ceramics and tiles
- Window and connection joints
- Indoor and outdoor applications
Properties of silicone sealants
Silicone is characterized by its high elasticity and durability.
Important properties:
- permanently elastic
- water and weather resistant
- temperature and UV resistant
- very good adhesion to smooth surfaces
- long lifespan
Overview of silicone sealant types
Sanitary silicone
Sanitary silicone is specially developed for damp and wet areas and contains mold-inhibiting additives.
Suitable for:
- Bathroom and shower
- Kitchen and sanitary installations
Natural stone silicone
Natural stone silicone prevents edge zone discoloration and is ideal for delicate materials.
Suitable for:
- Natural stone
- Marble and granite
- high-quality surfaces
Universal & construction silicone
Universal silicone is suitable for versatile indoor and outdoor applications.
Suitable for:
- Construction and connection joints
- Windows and facades
- general assembly work
Branded silicone sealants in professional quality
OTTO Silicone Sealants
OTTO is one of the leading manufacturers of silicone sealants for tradesmen. The products stand for tested quality, easy processing and high resistance.
Popular products:
The choice of suitable silicone depends on:
- Substrate (e.g., tile, natural stone, glass)
- Area of application (indoor or outdoor)
- Moisture exposure
- Optical requirements (color, surface)
For wet areas, sanitary silicone is recommended, while for natural stone, only special natural stone silicone should be used.
Suitable accessories for silicone sealants
For clean and durable joints, we recommend:
- Cartridge guns
- Jointing tools for smoothing
- Smoothing agent
- Cleaning wipes
Frequently asked questions about silicone sealants
Is silicone paintable?
No, silicone is generally not paintable. Acrylic is suitable for paintable joints.
Can silicone be used outdoors?
Yes, high-quality silicone sealants are UV and weather resistant.
How long does a silicone joint last?
With professional application, silicone joints can remain sealed and elastic for many years.
