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Sika SikaHyflex-407 EverFlash Universal 20oz Sausage
SikaHyflex-407 EverFlash Universal is a one-component hybrid flashing and weather-barrier sealant in a 20 oz sausage for peel-and-stick wraps and envelope transitions. It bonds primerless to low-energy membranes and reaches tack-free in 30 to 90 minutes for weather-tight detailing.
- Primerless adhesion to polyethylene and peel-and-stick wraps
- Compatible with bituminous surfaces that bleed with polyurethane
- Tack-free in 30 to 90 minutes with acrylic overcoating
$19.58
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SikaHyflex-407 EverFlash
SikaHyflex-407 EverFlash Universal is a one-component hybrid flashing and weather-barrier sealant for primerless adhesion to peel-and-stick membranes, polyethylene, and other low-energy wraps. This 20 oz sausage (part 528095) meets ASTM C920 Type S, Grade NS, Class 12.5, reaches tack-free in 30 to 90 minutes, and cures approximately 0.16 in in 24 hours. It applies from 40 to 100 F, stays compatible with bituminous surfaces that bleed with polyurethane, and is not an expansion-joint sealant.
Key Features
- One-component non-sag hybrid flashing and weather-barrier sealant
- Meets ASTM C920 Type S, Grade NS, Class 12.5, Use NT, G, A, O, M
- Primerless adhesion to polyethylene, polypropylene, and polyolefins
- Compatible with bituminous and asphalt-based materials without bleeding
- Tack-free in 30 to 90 minutes; approximately 0.16 in cure depth in 24 hours
- Applies from 40 to 100 F and overcoats with most acrylic coatings
Applications
- Works on peel-and-stick window flashing and wraps
- Termination and transition seals where flashing meets the envelope
- Connections between building wrap and roofing systems
- Seals around penetrations in weather and air barrier materials
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | SikaHyflex-407 EverFlash Universal |
| Part no. | 528095 |
| Unit | 20 oz (600 ml) sausage |
| PDS color | Bronze |
| Chemistry | One-component hybrid flashing sealant |
| ASTM | C920 Type S, Grade NS, Class 12.5 |
| Shore hardness | 30 |
| Tensile / elongation | 200 psi / 250% |
| Tack-free | 30 to 90 min |
| 24 hour cure depth | Approximately 0.16 in |
| Apply temp | 40 to 100 F |
Product documents: SikaHyflex-407 EverFlash Universal Product Data Sheet (PDF)
Frequently Asked Questions
What substrates does SikaHyflex-407 EverFlash bond without primer?
Peel-and-stick flashing, nonwoven wraps, polyethylene, polypropylene, common polyolefins, PVC, steel, metal, aluminum, and glass. Confirm adhesion on the project substrates.
What tack-free and cure times should crews plan for with SikaHyflex-407 EverFlash?
Tack-free time is 30 to 90 minutes depending on climate. Cure depth is approximately 0.16 in in 24 hours.
What bituminous surfaces work with SikaHyflex-407 EverFlash?
It is compatible with asphalt and bituminous materials that would normally bleed with polyurethane sealants.
What joint type is outside the scope of SikaHyflex-407 EverFlash?
It is not for use in expansion joints. Use it for flashing, wrap transitions, terminations, and weather-barrier detailing.
What paint systems overcoat SikaHyflex-407 EverFlash?
Most acrylic coatings. Confirm compatibility on a test area before full coating.
What size is the SikaHyflex-407 EverFlash sausage on this page?
The sausage is 20 oz (600 ml), part 528095.
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