11
Buy in Bulk and Save!
Price Per Unit: $18.10
Price Per Box: $16.29
Use Dowsil™ 888 Silicone Joint Sealant for: Sealing concrete pavement joints, accommodating movement and resisting weather, UV, and fuel exposure.
Dowsil™ 888 Silicone Joint Sealant is a high-performance, one-part silicone sealant designed for concrete pavement joints. Its low-modulus formulation allows for significant movement, accommodating 100% extension and 50% compression. This cold-applied sealant offers excellent weather and UV resistance, as well as short-term fuel resistance, making it ideal for various pavement applications. It provides unprimed adhesion to clean, dry Portland cement concrete, simplifying installation and ensuring durable, long-lasting seals.
Key Features of Dowsil™ 888 Silicone Joint Sealant
- High movement capability: 100% extension and 50% compression
- Weather and UV resistant
- Fuel resistant (short-term exposure)
- Low modulus for flexibility
- One-part, cold-applied, ready-to-use
- Unprimed adhesion to Portland cement concrete
- Wide application temperature range (-20 to 120°F)
Technical Overview
- Chemical Properties: One-part, non-sag silicone
- Application Temperature Range: -20°F to 120°F (-29°C to 49°C)
Trade Professional Information
- Required Tools: Caulking gun, air-powered pump (for bulk applications), joint saw, backer rod installation tools
- Trade-Specific Tips: Ensure joints are clean, dry, and free of frost before application. Use the correct backer rod size to prevent three-sided adhesion. Recess the sealant to the proper depth for optimal performance and to allow for future grinding.
- Common Issues and Solutions: Ensure proper joint design to accommodate movement. Avoid application during inclement weather or on wet surfaces.
Storage and Shelf Life
- Storage Requirements: Store in original, unopened containers below 32°C (90°F)
- Shelf Life Information: Refer to product packaging for “Use By” date
- Temperature Considerations: Avoid storing at high temperatures
Certifications
- ASTM D 5893 Type NS
- FAA P-605
- Meets SS-S-200E (section 4.4.12) Flame Test Requirements
- EN 14187-5 Hydrolysis Test
Frequently Asked Questions About Dowsil™ 888 Silicone Joint Sealant
- Q: Can this sealant be used on asphalt? A: No, it is not intended for use with asphalt.
- Q: Does it require a primer? A: No, it provides unprimed adhesion to clean, dry concrete.
- Q: What is the movement capability? A: 100% extension and 50% compression.
- Q: Can it be used in all weather conditions? A: No, avoid application during inclement weather or on wet surfaces.
Use Dowsil™ 888 Silicone Joint Sealant for:
- Sealing concrete pavement joints
- Repairing spalled joints
- New concrete construction
- Remedial applications
- Joints with minor spalling
Why Use Dowsil™ 888 Silicone Joint Sealant:
- Provides a durable, flexible seal
- Reduces maintenance requirements
- Extends pavement life
- Easy application
- Performs in a wide range of temperatures
How to apply Dowsil™ 888 Silicone Joint Sealant:
- Prepare the joint: clean and dry the concrete surface.
- Install backer rod to the correct depth.
- Apply the sealant using a caulking gun or air-powered pump.
- Tool the sealant to ensure proper contact and a smooth finish.
- Allow the sealant to cure.
Dowsil™ 888 Silicone Joint Sealant limitations:
- Not recommended for continuous water immersion.
- Not for use in totally confined spaces.
- Not compatible with asphalt.
- Do not apply to wet or damp surfaces.
- Not for medical or pharmaceutical uses.
- Wear appropriate PPE, including gloves and eye protection.
- Ensure adequate ventilation during application.
Dowsil™ 888 Silicone Joint Sealant can be used on the following substrates:
- Portland cement concrete
- Choosing a selection results in a full page refresh.