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Price Per Unit: $9.45
Price Per Box: $8.51
Use Everflex JS High Performance Joint Sealer for: Flexible sealing of joints in construction, windows, doors, panels, and blockwork exposed to movement and weather.
Everflex JS High Performance Joint Sealer is a hybrid acrylic elastomeric sealant designed for both interior and exterior applications in Australian construction. Its low modulus and high elasticity allow it to withstand ±50% joint movement, making it ideal for sealing in dynamic environments. Everflex JS adheres exceptionally to a wide range of materials including concrete, timber, metals, and plastics, without the need for priming. Its smooth tooling, superior slump resistance, and excellent weatherability make it a top choice for trade professionals seeking reliable performance across diverse projects.
Key Features of Everflex JS High Performance Joint Sealer
- Exceptional elasticity with ±50% movement capability for dynamic joints
- Superior adhesion without primer on most substrates for efficient application
- Excellent slump resistance ensures clean, smooth finishes even on vertical surfaces
- Weather-resistant and UV stable, ideal for Australian climate extremes
- Paintable, non-toxic, and non-hazardous for safe indoor and outdoor use
Technical Overview
- Chemical Properties: Hybrid Acrylic
- Application Temperature Range: 5°C to 35°C (41°F to 95°F)
- Service Temperature: -18°C to 80°C (0°F to 176°F)
- Specific Gravity: 1.06
- Elongation at Break: 1000%
- Movement Capability: ±50%
- VOC Content: 32 g/L
- Colours: Grey
Trade Professional Information
- Required Tools: Caulking gun, spatula, Adhefoam backer rod or bond breaker tape
- Trade-Specific Tips: Tool immediately after application for a smooth, non-concave finish; avoid rain within 90 minutes of application
- Common Issues and Solutions: Use Fire-Foam backer rod for fire-rated joints; ensure joints are capped to prevent water infiltration before curing
Storage and Shelf Life
- Storage Requirements: Store in unopened containers between 5°C and 32°C
- Shelf Life Information: Minimum 12 months from date of manufacture
- Temperature Considerations: Protect from freezing; avoid high heat exposure
Certifications
- Meets TT-S-00230C, Class A
- Complies with ASTM 834
- VOC compliant to Californian SCAQMD Rule 1168
Frequently Asked Questions About Everflex JS High Performance Joint Sealer
Q: How should Everflex JS be applied for best results?
A: Apply Everflex JS to clean, dry surfaces using a caulking gun. Fill joints with Adhefoam backer rod or bond breaker tape before sealing. Tool off immediately with a spatula for a flat finish.
Q: How does Everflex JS perform under Australian weather conditions?
A: Everflex JS excels in Australian climates, offering excellent UV stability, water resistance, and flexibility in both hot and cold conditions with no cracking or adhesion loss.
Q: What materials is Everflex JS compatible with?
A: Compatible with concrete, brickwork, timber, metals, and many plastics including acrylic and polycarbonate. Always test on suspect surfaces to confirm adhesion.
Q: What should I do if Everflex JS begins to sag on wide joints?
A: For wide joints, conduct pre-application testing to ensure stability. Maintain a maximum depth of 10mm and use backer rods to support the sealant and prevent sagging.
Q: Is Everflex JS safe to use indoors and how should I dispose of it?
A: Yes, it’s non-toxic and non-hazardous, making it suitable for indoor use. Dispose of cured sealant as general waste; refer to local guidelines for disposal of uncured material.
Use Everflex JS High Performance Joint Sealer for:
- Sealing window and door frames in residential and commercial buildings
- Expansion joints in precast panels, blockwork, and tilt-up construction
- Joint sealing in timber, metal, and plastic structures
- Fire-rated joints when used with Fire-Foam backer rod
Why Use Everflex JS High Performance Joint Sealer:
- Provides long-lasting flexible seals in high-movement joints
- Reduces maintenance costs through excellent weather resistance
- Improves finish quality with non-sag, smooth tooling properties
- Safe to use indoors and outdoors with non-toxic formulation
How to apply Everflex JS High Performance Joint Sealer:
- Clean the joint thoroughly, removing all dirt, grease, and loose particles.
- Insert Adhefoam backer rod or bond breaker tape to set desired joint depth.
- Apply Everflex JS evenly using a quality caulking gun for a consistent bead.
- Tool off immediately using a spatula, achieving a flat finish. Do not allow a concave surface.
- Protect the joint from rain for at least 90 minutes post-application to ensure proper curing.
Everflex JS High Performance Joint Sealer limitations:
- Do not use if rain is likely within 90 minutes, as premature exposure may cause washouts.
- Not recommended for joints deeper than 10mm or with a depth-to-width ratio exceeding 2:1.
- Backer rod must not absorb water before sealant cures to prevent gassing issues.
Safety precautions when using Everflex JS High Performance Joint Sealer:
- Personal Protective Equipment: Wear gloves and safety glasses during application.
- Ventilation: Ensure adequate ventilation in enclosed spaces.
- Handling: Avoid prolonged skin contact. Wash hands after use.
- Non-toxic and non-hazardous; consult MSDS for sensitive individuals.
Everflex JS High Performance Joint Sealer can be used on the following substrates:
- Concrete – Ensure surface is clean and dry
- Brickwork and Blockwork – Remove loose particles before application
- Timber – Suitable for sealed and unsealed timber surfaces
- Metals – Compatible with aluminium, steel, and galvanised surfaces
- Plastics – Compatible with acrylic and polycarbonate with no priming
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