Eliminates the need for screws or rivets, allowing panels to maintain a clean and seamless architectural appearance.
TWEHA 20two
High-performance polysiloxane sealant for glazing and façade applications
TWEHA 20-two is a high-quality, exceptionally weather-resistant and durable polysiloxane-based sealant, specially developed for professional glazing, curtain wall and façade applications.
Thanks to its permanent elastic properties and extremely high movement capability, TWEHA 20two provides a reliable and durable seal for joints exposed to movement, changing temperatures and demanding weather conditions. The sealant is easy to apply, even at low temperatures, and shows minimal stringing during application.
TWEHA 20-two is the professional choice where maximum elasticity, weather resistance and long-lasting sealing performance are essential.
Cartridge
290
(grey)
Designed for performance and efficiency
Engineered for reliable bonding
TWEHA 20-two combines excellent application characteristics with outstanding long-term performance:
01
Neutral-Curing and Low-Odor
Contains no organic plasticizers or solvents for a cleaner application.
02
Exceptional Elasticity and Movement
Remains permanently soft and elastic, with a low modulus and movement capability of approximately 50%.
03
Excellent Application Properties
Offers excellent rheological, application and adhesion properties, with minimal stringing and easy processing—even at low temperatures.
04
Compatible with Glass and Metals
Non-corrosive on metals and compatible with PVB interlayers and insulating-glass edge seals.
05
Outstanding Weather Resistance
Resists sunlight, rain, snow, ozone and extreme temperatures while providing excellent long-term durability and ageing stability.
TWEHA 20-two is particularly suitable for:
TWEHA 20-two is particularly suitable for movement joints in structural glazing systems, curtain walls, glazed façades and other façade constructions, as well as highly elastic movement joints in building and glazing structures. It performs equally well for perimeter sealing around façades, frames, panels, windows and prefabricated elements, and for top and heel sealing of single, insulating and safety glass. It can also be used to seal PMMA and polycarbonate sheet materials without causing stress cracking or crazing, and for the repair and renovation of damaged silicone joints in building, glazing and façade applications.
A complete bonding system
All TWEHA products are part of the Tweha Bonding System. Always refer to the Technical Data Sheets and approved substrate lists for correct system application.
Technical questions
Find quick answers to common technical questions about StoneMate.
20-two is a professional neutral-curing silicone sealant for glazing, curtain-wall and façade joint applications.
Yes. Its high elasticity makes it suitable for façade and glazing joints exposed to substantial movement.
20-two offers a movement capability of approximately 50%, subject to correct joint design and application.
Yes. It provides excellent resistance to sunlight, rain, snow, ozone and demanding temperature conditions.
It is designed to be compatible with common PVB interlayers and insulating-glass edge-seal systems, subject to application requirements.
More efficient, more economical
Compared to traditional mechanical fixation systems, TWEHA Bonding Systems can reduce installation costs by up to 40%.
Faster installation, fewer components, and no visible fixings result in both economic and aesthetic advantages.
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