Unique one component, polyurethane-based, low modulus joint sealant, combining classic polyurethane technology with hybrid technology, with outstanding thixotropic properties.
HyperCoat Universal Flexsealer is a novel low modulus expansion joint sealant, especially formulated to contain both PU and silylated-PU technology, thus giving rise to a sealant which includes the best of both technologies. It has been modified in order to give enhanced thixotropic properties. It cures by reaction with atmospheric humidity to produce a joint sealant with a 50% joint movement accommodation factor and excellent adhesion on substrates traditionally problematic for PU sealants, e.g. glass, aluminum, steel, polycarbonate, etc.. Additionally, the sealant has been modified in order to have extrusion profile identical to hybrid PU or MS technology. The extrusion rate and tooling of the sealant remain the same throughout a very wide range of temperature and humidity conditions.
The sealant is easy to apply even in very low temperatures and the storage stability is unlike any polyurethane sealant in the market
Recommended for Sealing joints in:
• Insitu concrete,
• expansion concrete plates,
• precast panels,
• brick and block work,
• water tanks and swimming pools,
• metal frames,
• aluminum windows and panels,
• irrigation channels,
• glass,
• granite & marble.
Limitations:
• Highly porous substrates, dusty surfaces or poorly compacted concrete, must have their porous bond area surfaces thoroughly sealed to avoid the possibility of air bubbles being blown into the uncured sealant if the substrate temperature rises.
Clean joint thoroughly, and ensure that no oil, grease and wax contaminants, silicone remains are present. For many applications, primer is not required.
In the case of application on very porous substrates, bond area surfaces thoroughly to avoid the possibility of air bubbles being blown into the uncured sealant if
the substrate temperature rises. The recommended primer is Hypercoat SB Primer Apply backing material such as open cell polyurethane or a closed cell
polyethylene backing rod. Although both types of backing rod are recommended care must be taken when using the closed cell polyethylene rod that the outer
skin not be punctured as in rising temperature conditions it may cause bubbling. Backing rod application is important as it ensures that the correct
width to depth ratio is achieved provides a firm backing against which the sealant can be tooled off.
Slide the sealant into the applicator gun, cut off the very end of the sealant packaging and fit the gun with the nozzle that has been cut to deliver the right bead
size. Extrude the sealant into the joint ensuring that no air is trapped in the joint. Wide joints will require more than one pass of the application gun to
make sure that sealant is in full contact with the sides and bottom of the joint. Tooling is recommended immediately after the application of sealant. The
ratio width to depth should be 2:1 subject to a minimum depth of 10mm
Packaging: 600cc sausage.
Shelf life: 12 months minimum in the original packaging when stored in dry places and at temperatures of 5-25oC. Once opened, use as soon as possible.
Colours: Grey, Black, White