Application fields
- sealing of connection and expansion joints in the building industry
- sealing of perimeter joints
- sealing of joints between glazing and supporting structures (frames, transoms, mullions)
Processing
The substrate areas that will be in contact with the sealant must be clean, dry and free of all loose material, dust, dirt, rust, oil and other contaminants. Non-porous substrates should be cleaned with a solvent and a clean, lint-free, cotton cloth. Remove residual solvent before it evaporates with a fresh clean, dry cloth.
For application from cartridges cut thread open, fix nozzle on top and cut to required bead size. The sealant can be applied in beads or layers. It requires moisture in order to cure. The curing time can take longer at lower temperatures, lower humidity or by low volume of air exchange.
It is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (paints, varnishes and glazes) or organic plasticizer containing rubbers (EPDM, butyl and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant. Materials in direct contact with the applied sealant like cleaning agents and materials in indirect contact like gaseous emissions can damage the sealant in its function or change its appearance.
Because of the multitude of these materials, Wacker cannot make a general statement to the compatibility of materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests.
The use of tooling agents should be avoided if possible. Otherwise, water or a diluted solution of a little neutral soap or alcohol in water should be sparingly applied.
Certification
WACKER® WN - WEATHERSEAL NEUTRAL 2 is certified and classified according to
- ISO 11600 F/G, Class 25HM
- ASTM C920, Class 50
Adhesion
WACKER® WN - WEATHERSEAL NEUTRAL 2 exhibits excellent primerless adhesion to many substrates, e.g. glass, tiles, ceramics, enamel, glazed tiles and clinker e.g. aluminium, steel, zinc or copper wood, and many plastics.
Users must carry out their own tests due to the great variety of substances. The adhesion can be improved in many cases by pretreatment of the substrates with a primer. If adhesion difficulties arise please contact our technical service.
Restrictions on use
WACKER® WN - WEATHERSEAL NEUTRAL 2 must not be used for insulating glass applications
WACKER® WN - WEATHERSEAL NEUTRAL 2 must not be used for structural glazing bonding - it is the responsibility of the user to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (paints, varnishes and glazes) or organic plasticizer containing rubbers (EPDM, butyl and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant. Materials in direct contact with the applied sealant like cleaning agents and materials in indirect contact like gaseous emissions can damage the sealant in its function or change its appearance. Because of the multitude of these materials, Wacker cannot make a general statement to the compatibility of materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests
WACKER® WN - WEATHERSEAL NEUTRAL 2 is not recommended for use on natural stones, such as marble, granite, quartzite, as it can cause staining
WACKER® WN - WEATHERSEAL NEUTRAL 2 is not recommended for sealing of aquaria or for long term use under water
WACKER® WN - WEATHERSEAL NEUTRAL 2 is not suitable for food grade applications where the joints are likely to come in contact with food
WACKER® WN - WEATHERSEAL NEUTRAL 2 is not suitable for use as a mirror adhesive.
