Litokol Litosil is a one-component silicone sealant in White 2, supplied in a 300 ml cartridge. It is used to seal permanently elastic joints on floors, walls, and facades, both indoors and outdoors. The sealant is ready-to-use and adheres to most building materials without a primer.
Color & ambiance
White 2 is an off-white with a soft core. It's the ideal choice when bright white would appear too cold next to a cream-colored tile.
Product & application
Litosil cures under the influence of air humidity and remains elastic, allowing the joint to accommodate movement instead of cracking. The cured sealant is waterproof and highly resistant to weathering, aging, and UV radiation.
- Expansion joints on floors, walls, and facades
- Connection joints in healthcare environments
- Swimming pools in ceramic and porcelain stoneware
- Bonding and insulating glass elements
- Sealing channel glass
- Wet rooms indoors and outdoor applications
Note the limitation: this version cures with acetic acid. For marble and natural stone, choose Litosil Neutro, which is compatible according to ISO 16938-1 and will not discolor the joint edges.
Substrate & compatibility
Surfaces must be completely clean, dry, and free of dust, grease, oil, and old paint. Porous substrates should be mechanically cleaned, for example with a steel brush, to remove loose particles. If you are repairing an existing joint, remove all old sealant completely before reapplying.
- Adheres to most building materials without a primer
- In case of adhesion problems on certain substrates, a specific primer is required
- Not to be used in combination with butyl, EPDM, neoprene, or bituminous and insulating felt
- Not paintable
- Not suitable for full-surface bonding
Check in advance that the building materials that will come into contact with the sealant are mutually compatible. If further work is to be carried out at the joint location later, check whether the released substances will not affect the sealant.
Processing
Screw the plastic nozzle onto the cartridge and cut it at an angle to the desired width. Insert the cartridge into a hand or pneumatic gun and inject the sealant into the joint in one continuous motion, without trapping air. Finish the joint within the open time — after that, the outside will close.
- Process between +5 °C and +40 °C, optimally between +15 °C and +25 °C
- Skin formation after approximately 15 minutes
- Cures approximately 2 to 3 mm per 24 hours
- Fully loadable after 5 days
- Ensure good ventilation during application and curing
The curing time increases with the thickness of the joint. If the layer needs to be thicker than 15 mm, please contact the manufacturer's technical service first. In warm weather, store the cartridge cool, dry, and out of direct sunlight, and use an opened cartridge within a short period of time. Avoid contact with solvents as long as the sealant is curing.
Key features
- Waterproof and permanently elastic
- Stretches up to 250% before breaking
- Accommodates a total deformation of 25%
- Resistant to temperatures from -40 °C to +150 °C
- Good resistance to weather, aging, and UV radiation
- Adheres to most building materials without a primer
- Exceptional smooth finishing properties
Technical specifications
| Property |
Value |
| Type |
Acetic acid curing silicone sealant |
| Content |
300 ml cartridge |
| Class |
25 LM according to ISO 11600 F |
| Shore A hardness |
22 according to ISO 868 |
| Elongation at break |
250% according to ISO 8339 |
| Tensile strength |
Minimum 0.7 N/mm² according to ISO 8339 |
| Modulus of elasticity at 100% |
Minimum 0.4 N/mm² according to ISO 8339 |
| Permissible deformation |
25% |
| Specific gravity |
0.99 kg/dm³ |
| Skin formation |
Approx. 15 minutes |
| Curing |
2 to 3 mm per 24 hours |
| Processing temperature |
+5 °C to +40 °C |
| Operating temperature |
−40 °C to +150 °C |
| Shelf life |
24 months, store cool and dark, frost-free |
Frequently asked questions
How many meters of joint can I get from one cartridge? That depends on the size of the joint. For a joint 6 mm wide and 5 mm deep, 300 ml will cover approximately 10 meters; for a joint 10 mm wide and 10 mm deep, it will be about 2 meters.
Can I use this sealant on marble or natural stone? No. This version cures with acetic acid, which can discolor the joint edges. For those materials, use Litosil Neutro.
Can I apply over an old sealant joint? No. The old sealant must be completely removed before reapplying, otherwise, the new layer will not adhere reliably. Also, it cannot be painted over, so choose the correct color immediately.
When is the joint loadable? The sealant cures approximately 2 to 3 mm per 24 hours and is fully loadable after five days. For a deep joint, this will take longer.
