Duroseal 40FC – Polyurethane Joint Sealant for Expansion Joints
- Regular price
- $12.50 AUD
- Sale price
- $12.50 AUD
- Regular price
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- Unit price
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Prices shown exclusive of GST.
Duroseal 40FC is a fast-curing, flexible polyurethane sealant formulated for sealing joints and cracks in both vertical and horizontal surfaces. It delivers outstanding adhesion, flexibility, and durability across a wide range of construction materials, including concrete, masonry, and pre-cast panels. Its one-part moisture-curing formula makes it easy to apply, and once cured, it resists weathering, movement, and UV exposure — making it ideal for both internal and external use.
Whether used for movement joints, expansion joints, or facade seals, Duroseal 40FC provides long-term sealing performance with excellent elasticity and resistance to joint movement.
• UV-resistant and suitable for outdoor use
• Fast curing – forms skin in 60 minutes
• Paintable for aesthetic integration
• Withstands extreme temperatures (-30°C to +120°C)
• Medium modulus – handles surface movement
• Smooth finish with excellent adhesion on most substrates
• Can be applied without primer in most cases
• Expansion joints in façades and concrete panels
• Precast element joints in towers and high-rise buildings
• Joint waterproofing in balconies and terraces
• Vertical and horizontal construction joints
• Compatible with polyethylene backing rods for two-way joint movement
• Product Type: Polyurethane Joint Sealant
• Colour: White, Grey
• Packaging: 600ml sausage
• Shore Hardness: 30–35
• Density: ~1.35 g/cm³
• Skin Formation Time: 60 minutes
• Full Cure: 24 hrs for 2mm
• Flexibility: >500% elongation
• Shelf Life: 12 months (sealed, upright storage)
• Application Temp: -30°C to +120°C
• Made in Australia by Durotech Industries
- balcony waterproofing
- concrete joint filler
- duroseal
- duroseal 40fc
- Durotech
- expansion joint
- façade sealant
- polyurethane sealant
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"Brilliant service and fast turnaround! The H2O team got my order ready on the same day — helped me stay on track and impress the builder."
"H2O helped me spec the right system for a balcony job. Even with the weather turning bad, their advice paid off — no failures, just solid results."
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"H2O’s forensic team resolved a complex waterproofing issue on a large commercial site. Their reporting, advice, and support kept the project moving confidently.
"Great range and even better advice. The team knew exactly what I needed for the job — no stuffing around, just solid support from people who know the trade."
"Saved me a heap of time on site. H2O had exactly what I needed, and their advice on application helped me get it done faster with no hold-ups between stages."
"Our team relies on H2O for fast quotes, clear spec sheets, and product availability. Makes ordering for site a breeze — they know what tradies need."
"Product recommendations for concrete repair have been spot-on. Materials hold firm, cure quickly, and help us keep tight schedules without sacrificing quality."

