11
Buy in Bulk and Save!
Price Per Unit: $10.90
Price Per Box: $9.81
Use Hi-Flex Construction for: Sealing expansion joints, perimeter window sealing, external wall cladding, and marine bonding
Hi-Flex Construction is a high-performance, single-component hybrid sealant based on advanced MS Polymer technology. Designed for durability in harsh Australian climates, it delivers exceptional elasticity, non-staining performance, and primer-less adhesion to most common building materials. Ideal for both interior and exterior applications, it’s a go-to for sealing expansion joints, windows, curtain walls, and vehicle or marine manufacturing.
Key Features of Hi-Flex Construction
- ±50% movement capability accommodates dynamic joint shifts
- UV and weather-resistant for long-term external durability
- Paintable and non-staining, ensuring aesthetic finish on facades
- Primer-less adhesion to most substrates including powder coat
- Low VOC and mould-resistant, ideal for green star projects
Technical Overview
- Chemical Properties: MS Polymer, neutral curing
- Application Temperature Range: 5°C to 40°C (41°F to 104°F)
- Service Temperature: -40°C to 100°C (-40°F to 212°F)
- Elongation at Break: Approx. 1100%
- Hardness: Shore A 25
- VOC Content: 1.10%
Trade Professional Information
- Required Tools: Sausage gun, spatula, masking tape, Xylene cleaner
- Trade-Specific Tips: Use open cell backer rods and avoid three-sided adhesion for best results
- Common Issues and Solutions: Avoid moisture-vapour transmission; ensure surfaces are clean and dry to prevent bubbling or delamination
Storage and Shelf Life
- Storage Requirements: Store in cool, dry place away from direct sunlight
- Shelf Life Information: 12 months from production date
- Temperature Considerations: Store between 5°C and 25°C (41°F to 77°F)
Certifications
- ASTM C920 CLASS 50 Compliance
- ASTM C1248 Non-staining certification
- VOC compliant for “green star” environmental criteria
Frequently Asked Questions About Hi-Flex Construction
Q: What is the best method for applying Hi-Flex Construction?
A: Ensure surfaces are clean and dry, use a sausage gun to apply in a continuous bead, and tool off within 10 minutes before skin formation.
Q: How does it perform in harsh weather conditions?
A: It maintains flexibility and adhesion under extreme UV exposure, rain, and temperature changes from -40°C to 100°C.
Q: Is it compatible with powder-coated aluminium?
A: Yes, Hi-Flex Construction adheres well to powder coat but preliminary adhesion testing is recommended for optimal results.
Q: What if the sealant bubbles during curing?
A: Bubbling is often due to moisture or air entrapment; ensure proper surface prep and avoid applying over damp substrates.
Q: What are the safety precautions when using this product?
A: Use gloves and eye protection, ensure good ventilation, and clean skin contact with soap and water. Avoid inhalation and ingestion.
Use Hi-Flex Construction for:
- Sealing expansion joints in tilt-up panels and facades
- Bonding in marine and automotive applications
- Perimeter sealing of windows and curtain walls
Why Use Hi-Flex Construction:
- Delivers long-term joint flexibility with ±50% movement
- Excellent UV resistance and durability in Australian climates
- Non-toxic and environmentally compliant for green projects
How to apply Hi-Flex Construction:
- Clean and prepare surface; remove contaminants using Xylene
- Mask joint edges if required; apply primer for critical joints
- Apply sealant using sausage gun at 45° angle; fill joint fully
- Tool within 10 minutes before skin formation; remove tape promptly
- Allow 3mm per 24 hours cure rate; clean tools with Xylene while wet
How to apply Hi-Flex Construction:
- Clean and prepare surface; remove contaminants using Xylene
- Mask joint edges if required; apply primer for critical joints
- Apply sealant using sausage gun at 45° angle; fill joint fully
- Tool within 10 minutes before skin formation; remove tape promptly
- Allow 3mm per 24 hours cure rate; clean tools with Xylene while wet
Safety precautions when using Hi-Flex Construction:
- Personal Protective Equipment: Gloves, safety glasses
- Ventilation: Use in well-ventilated areas
- Handling: Avoid contact with skin and eyes, do not ingest
- Dispose of according to local regulations; do not pour into drains
Hi-Flex Construction can be used on the following substrates:
- Concrete, masonry, and brick – ensure 28-day cure time for concrete
- Metals including galvanised steel, aluminium (except lead/copper)
- Timber, fibreglass, and plastics – test adhesion where uncertain
- Painted surfaces, stone (stain testing required), waterproof membranes
- Choosing a selection results in a full page refresh.