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Use Bostik Seal ‘N’ Flex® One Plus P590 for: Sealing expansion and construction joints in concrete, precast panels, cladding, and specialty surfaces to manage movement and ensure long-lasting flexibility.
Bostik Seal ‘N’ Flex® One Plus P590 is a low modulus polyurethane sealant designed for demanding construction applications requiring high flexibility and durability. Formulated for Australian conditions, it provides excellent UV resistance, superior elongation (>1000%), and accommodates joint movement of +100%/-50%. Ideal for both vertical and horizontal joints, it delivers bubble-free, sag-free curing and can be used on a wide range of substrates including concrete, fibre cement, metal, and stone. This Made-in-Australia solution ensures a smooth finish and long-lasting seal in all environments.
Key Features of Bostik Seal ‘N’ Flex® One Plus P590
- Low modulus for superior flexibility and movement accommodation
- Extremely elastic with over 1000% elongation at break
- Bubble-free, sag-resistant curing for smooth application
- UV resistant for long-term outdoor durability
- Paintable after full cure for seamless integration
- Excellent adhesion to porous and non-porous substrates
- Made in Australia to meet local standards and conditions
Technical Overview
- Chemical Properties: Low modulus polyurethane
- Application Temperature Range: 5°C to 40°C (41°F to 104°F)
- Service Temperature: -30°C to 80°C (-22°F to 176°F)
- Cure Rate: 3mm per 24 hours at 23°C and 50% RH
- Elongation at Break: >1000%
- Tensile Strength: 1.20 N/mm²
Trade Professional Information
- Required Tools: Cartridge or sausage caulking gun, spatula or trowel, Bostik Handy Wipes for cleanup
- Trade-Specific Tips: Always use backing rod for correct joint geometry; prime critical surfaces for optimal adhesion
- Common Issues and Solutions: For poor adhesion, ensure surfaces are clean and primed; avoid applying in wet conditions
Storage and Shelf Life
- Storage Requirements: Store in cool, dry, ventilated area between 5°C and 25°C
- Shelf Life Information: 15 months from date of production in original unopened packaging
- Temperature Considerations: Avoid storage in direct sunlight or temperatures outside recommended range
Certifications
- ASTM C920
- EN 15651-1 (F-EXT-INT-CC 25LM)
- EMICODE EC1
- SNJF F25E
- ASTM C1248
Frequently Asked Questions About Bostik Seal ‘N’ Flex® One Plus P590
Q: How should Bostik Seal ‘N’ Flex P590 be applied for best results?
A: Apply with a caulking gun, ensuring the joint is clean and dry. Use a backing rod to achieve correct joint depth, and tool the surface for a smooth, concave finish.
Q: How long does it take to fully cure?
A: The product cures at a rate of 3mm per 24 hours at 23°C and 50% RH, achieving full cure in 7 days for joints under 20mm wide. Wider joints require up to 14 days.
Q: What substrates is Bostik Seal ‘N’ Flex P590 compatible with?
A: It adheres well to concrete, fibre cement, aluminium, stone, and metal cladding. Primers may be needed for plastics and high-stress joints.
Q: What should I do if the sealant doesn’t adhere properly?
A: Ensure surfaces are free of contaminants and use Bostik N49 or N40 primers as required. Test adhesion prior to application for critical joints.
Q: Are there any safety concerns when using this sealant?
A: Use appropriate PPE including gloves and eye protection. Ensure adequate ventilation, and avoid contact with uncured sealant on skin or eyes.
Use Bostik Seal ‘N’ Flex® One Plus P590 for:
- Sealing expansion joints in precast concrete panels
- Facade sealing for EIFS, ETICS, and cladding systems
- Interior joint sealing in plasterboard and fibre cement
Why Use Bostik Seal ‘N’ Flex® One Plus P590:
- Exceptional joint movement capability reduces cracking
- Fast, bubble-free application saves time on site
- Durable and UV resistant for long-lasting seals
How to apply Bostik Seal ‘N’ Flex® One Plus P590:
- Clean and dry surfaces thoroughly, removing all contaminants.
- Install backing rod to control joint depth and shape.
- Prime substrates if necessary using Bostik N49 or N40 primers.
- Apply sealant with a cartridge or sausage caulking gun in a continuous bead.
- Tool the sealant with a spatula to form a smooth, concave finish.
Bostik Seal ‘N’ Flex® One Plus P590 limitations:
- Not suitable for joints in chlorinated or salt water environments
- Do not apply on PE, PP, PTFE, or soft plastics
- Not for glazing applications or trafficable joints
- Not to be applied below 5°C or above 40°C
Safety precautions when using Bostik Seal ‘N’ Flex® One Plus P590:
- Personal Protective Equipment: Gloves, safety goggles, and protective clothing
- Ventilation: Use in well-ventilated areas to avoid inhalation of fumes
- Handling: Avoid skin and eye contact; wash thoroughly after use
- Store away from food and drink; keep out of reach of children
Bostik Seal ‘N’ Flex® One Plus P590 can be used on the following substrates:
- Concrete and render – ensure surfaces are clean and dry
- Precast and tilt-up panels – use backing rod for joint geometry
- Metal cladding and aluminium – prime with Bostik N40 if necessary
- Granite, sandstone, and marble – test adhesion before full application
- Fibre cement sheeting – suitable for vertical expansion joints
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