SikaHyflex 407 EverFlash Universal is a one-component, hybrid technology, non-sag, flexible, flashing and weather barrier sealant designed for primerless adhesion to the most challenging substrates found in the building envelope such as peel & stick window and flashing membranes.
SikaHyflex 407 EverFlash Universal is a high-performance, one-component, hybrid technology sealant specifically designed for flashing, weather barriers, and building envelope applications. Packaged in a 20oz sausage (color: bronze), it provides primerless adhesion to a wide range of low surface energy materials including polyethylene, polypropylene, and peel-and-stick membranes. With outstanding flexibility and weather resistance, SikaHyflex 407 forms durable seals between windows, doors, roof transitions, flashing terminations, and building wraps. It is compatible with asphaltic and bituminous surfaces and offers UV resistance, paintability, and ease of application across demanding substrates without causing bleeding or staining.
Property | Value |
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Packaging | 20 fl.oz. (600ml) sausages (case of 20) |
Color | Bronze |
Shore Hardness | 30 (ASTM D412) |
Tensile Strength | 200 psi (ASTM D412) |
Elongation at Break | 250% |
Tack-Free Time | 30–90 minutes (climate-dependent) |
Cure Depth | 0.16" per 24 hours |
Service Temperature | -40°F to 170°F |
Application Temperature | 40°F to 100°F |
Shelf Life | 12 months (unopened) |
Can SikaHyflex 407 be used on bituminous surfaces?
Yes, it is compatible with asphalt and bituminous materials and will not cause bleeding like polyurethane sealants.
Is priming required before application?
In most cases, priming is not necessary. However, proper surface preparation is critical for optimal adhesion.
Can SikaHyflex 407 be painted?
Yes, it can be painted over with most acrylic coatings once fully cured.
Brand | Sika |
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Size | 20oz |
Manufacturer | Sika |