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Price Per Unit: $10.30
Price Per Box: $9.27
Use Megaprene 40gg for: Vertical and horizontal joints in bridges, roadways, car parks, driveways, factory and warehouse floors, and service station driveways.
Megaprene 40gg is a premium polyurethane joint sealant formulated to provide a durable and flexible seal in various construction applications. Its single-component, moisture-curing formulation ensures easy application and fast curing, while its high flexibility and non-sag properties make it suitable for both vertical and horizontal joints. Megaprene 40gg's excellent adhesion to most common building materials, combined with its resistance to chemicals and intermittent fuel spills, makes it a reliable choice for demanding environments.
Key Features of Megaprene 40gg Gun Grade Polyurethane Joint Sealant
- Highly Flexible: Accommodates joint movement, ensuring a durable and long-lasting seal.
- Non-Sag: Suitable for vertical applications without sagging or slumping.
- Fast Curing: Cures quickly, reducing downtime and allowing for faster project completion.
- Paintable: Can be painted over, allowing for seamless integration with surrounding surfaces.
- Tear Resistant: Provides excellent resistance to tearing and abrasion.
- Excellent Adhesion: Bonds strongly to most common building materials, ensuring a reliable seal.
- Potable Water Safe: Tested to AS/NZS 4020:2005, making it suitable for use with potable water.
Technical Overview
Megaprene 40gg is a moisture-curing polyurethane sealant that forms a tough, durable, and flexible seal. Its single-component formulation ensures easy application, while its fast curing properties allow for efficient project completion. Megaprene 40gg is designed to withstand harsh environmental conditions and chemical exposure, making it suitable for a wide range of construction applications.
Chemical Properties: Polyurethane, moisture-curing.
Application Temperature Range: +5°C to +40°C (41°F to 104°F). Ensure surfaces are clean, dry, and free from contaminants before application.
Application Information
- Required Tools: Caulking gun, spatula or putty knife, industrial solvent (Xylene or mineral turps) for clean-up.
- Trade-Specific Tips: Prime concrete floor joints with Primer 2001. Use backer rod or bond breaker tape to prevent three-sided adhesion. Tool the sealant immediately after application for a smooth finish.
- Common Issues and Solutions: Bubbling can occur from entrapped air or damaged closed-cell backer rod. Ensure proper joint preparation and tooling. Avoid painting until fully cured to prevent retarding the curing process.
Storage and Shelf Life
- Storage Requirements: Store in a cool, dry place between 10°C and 35°C (50°F and 95°F).
- Shelf Life Information: 12 months in original packaging.
- Temperature Considerations: Avoid extreme temperatures and moisture exposure.
Certifications
- Tested to AS/NZS 4020:2005 for use with potable water.
- Meets ASTM C-920 and SNJF Class 1 Elastomeric specifications.
- Complies with WorkSafe Australia standards (non-hazardous classification).
Frequently Asked Questions About Megaprene 40gg Gun Grade Polyurethane Joint Sealant
Q: What types of joints is Megaprene 40gg suitable for?
A: Megaprene 40gg is suitable for vertical and horizontal joints in bridges, roadways, car parks, driveways, factory and warehouse floors, and service station driveways.
Q: Can Megaprene 40gg be used with potable water?
A: Yes, Megaprene 40gg is tested to AS/NZS 4020:2005, making it suitable for use with potable water.
Q: How long does Megaprene 40gg take to cure?
A: Megaprene 40gg cures at a rate of 3mm per 24 hours. Tack-free time is approximately 2 hours at 23°C (73°F) and 60% relative humidity.
Q: Can I paint over Megaprene 40gg?
A: Yes, Megaprene 40gg is paintable with most commonly available paints. Ensure the sealant is fully cured before painting to avoid retarding the curing process.
Q: How do I clean up uncured Megaprene 40gg?
A: Uncured material can be removed using industrial strength solvents such as Xylene or mineral turps.
Q: What is the movement capability of Megaprene 40gg?
A: Megaprene 40gg has a movement capability of +/-25%.
Q: Is Megaprene 40gg suitable for swimming pool applications?
A: Megaprene 40gg is not suitable for internal swimming pool applications.
Use Megaprene 40gg Gun Grade Polyurethane Joint Sealant for:
- Sealing vertical and horizontal joints in bridges and roadways.
- Sealing joints in car parks and driveways.
- Sealing joints in factory and warehouse floors.
- Sealing joints in service station driveways.
- General construction joint sealing where high flexibility and durability are required.
- Applications requiring potable water safety (AS/NZS 4020:2005).
Why Use Megaprene 40gg Gun Grade Polyurethane Joint Sealant:
- High Flexibility: Accommodates joint movement, ensuring a durable and long-lasting seal, preventing cracks and leaks.
- Fast Curing: Reduces downtime and allows for faster project completion, improving efficiency.
- Paintable: Allows for seamless integration with surrounding surfaces, providing a professional finish.
- Excellent Adhesion: Bonds strongly to most common building materials, ensuring a reliable seal, reducing the risk of failures.
- Potable Water Safe: Suitable for use with potable water, expanding application possibilities.
- Chemical Resistance: Provides durability in harsh environments, ensuring long-term performance.
How to apply Megaprene 40gg Gun Grade Polyurethane Joint Sealant:
- Surface Preparation: Ensure substrates are sound, clean, and free from contamination. Prime if necessary, especially concrete floor joints with Primer 2001.
- Backer Rod/Bond Breaker: Use Adheseal Backing Rod (open or closed cell) or bond breaker tape to prevent three-sided adhesion.
- Application: Fill the prepared joint completely, avoiding air entrapment.
- Tooling: Dry tool the sealant immediately before it skins, within 10 minutes depending on temperature and humidity.
- Joint Dimensions: Joint depth should be half the width, with a minimum depth of 10mm. Maximum width of 50mm for vertical joints.
- Painting (Optional): Allow the sealant to fully cure before painting.
Megaprene 40gg Gun Grade Polyurethane Joint Sealant limitations:
- Not suitable for internal swimming pool applications.
- Ensure full curing before painting to avoid retarding the curing process.
- Avoid air entrapment during application to prevent bubbling.
- Proper priming is required for some substrates, especially concrete floor joints.
Safety precautions when using Megaprene 40gg Gun Grade Polyurethane Joint Sealant:
- Skin Contact: Skin irritation may occur in sensitive individuals. Wash hands after use.
- Ventilation: Use in well-ventilated areas.
- Clean-Up: Uncured material can be removed using industrial strength solvents such as Xylene or mineral turps.
- Eye Protection: Wear safety glasses.
Megaprene 40gg Gun Grade Polyurethane Joint Sealant can be used on the following substrates:
- Concrete: Seals joints in concrete structures.
- Masonry: Fills gaps and joints in brick and stone.
- Metal: Seals joints in metalwork.
- Wood: Seals joints in timber structures.
- Ceramic: Fills joints between tiles.
- Glass: Seals joints in glass installations.
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