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Unobond: High-Performance Construction Adhesive
Unobond is a flexible, high-strength construction adhesive formulated for permanent bonding of a wide range of building materials. This solvent-based, fast-drying adhesive offers excellent grab and cures to a durable, waterproof bond — even under tough site conditions. Designed for both indoor and outdoor applications, it fills small gaps, resists slumping on vertical surfaces, and sets hard in just 24–48 hours. Whether you're working with timber, masonry, plasterboard, concrete, or metal, Unobond ensures strong adhesion without the need for nails or screws.
Key Features & Specifications
- Solvent-based for quick curing and long-lasting durability
- Fast grab and high initial tack reduces need for bracing
- Bonds most common construction materials including timber, concrete, masonry, plasterboard, ceramics, and metals
- Gap-filling properties – perfect for uneven surfaces
- Flexible and paintable once cured
- Weather and water resistant – suitable for interior and exterior use
- Non-slump formula allows vertical or overhead application
- Cures to a hard set in 24–48 hours (full strength in 7 days)
Why Choose Unobond?
- Proven on-site performance for residential, commercial, and renovation work
- Eliminates need for nails or screws in many fixing applications
- Ideal for subfloors, wall linings, timber framing, and skirtings
- Adheres in dry and slightly damp conditions
- Low shrinkage and minimal squeeze-out during installation
Best Practices: Do's & Don'ts
Do
- Ensure surfaces are clean, dry, and free of grease or dust
- Apply in zigzag beads and press surfaces together firmly
- Allow 24–48 hours for curing depending on temperature and humidity
- Store between 5°C and 30°C for best performance
Don't
- Don’t apply to wet or frozen surfaces
- Don’t use for load-bearing structural joints
- Don’t disturb or reposition bonded items until cured
- Don’t use in areas subject to constant water immersion
Trade Use Cases: Applied in the Field
Builder: Timber Frame Fixing
The Problem
A fast, strong adhesive was needed to bond wall studs to concrete without fasteners.
The Solution
Unobond provided fast grab and held frames in place while curing, avoiding over-penetration issues from nailing.
Best Practice
Apply in continuous beads, clamp or brace where required, and allow full cure before load bearing.
Renovator: Skirting and Cornice Adhesive
The Problem
Need to install lightweight trims without nails in a freshly painted home.
The Solution
Unobond enabled a neat, fast, and nail-free install with a clean finish ready for touch-up painting.
Best Practice
Wipe any excess adhesive before it dries and tape in place if needed during initial set.
Frequently Asked Questions
What materials can Unobond be used on?
Unobond is suitable for timber, concrete, masonry, brick, plasterboard, fibre cement, ceramics, and most metals. Always ensure surfaces are clean and dry before application.
Is Unobond suitable for outdoor use?
Yes, Unobond is weather-resistant and suitable for external use, provided it is not used in submerged or continuously wet areas.
How long does Unobond take to cure?
Unobond sets in 24–48 hours depending on substrate porosity, temperature, and humidity. Full cure is typically achieved within 7 days.
Can I paint over Unobond?
Yes, Unobond is paintable once fully cured. We recommend testing compatibility with your paint system before full application.
Do I need to use clamping or mechanical fasteners?
Unobond has high initial grab, but in heavy-duty or overhead applications, clamping or bracing is recommended until the adhesive sets.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Wall panel and skirting installation | Fast grab reduces need for bracing or fixings | Builders, Carpenters |
| Timber framing to concrete or masonry | Strong adhesion even on uneven substrates | Framing Contractors, Renovators |
| Stair tread or joinery installation | No mechanical fasteners needed; clean finish | Joiners, Cabinetmakers |
| Fixing decorative trims or cornices | Paintable, flexible, and low-shrinkage | Interior Fit-Out Teams, Painters |
| Bonding plasterboard to timber or steel studs | Gap-filling and fast drying improves speed | Plasterers, Drywall Installers |
| DIY home repairs and woodworking | Easy to apply with standard caulking gun | DIYers, Hobbyists |
How to Apply Unobond: Step-by-Step
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1. Prepare the Surface
Ensure surfaces are clean, dry, and free of grease, dust, or flaking particles. Lightly sand glossy or sealed substrates if needed.
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2. Cut and Load Cartridge
Cut the nozzle to the desired bead width and pierce the inner foil. Load into a standard caulking gun.
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3. Apply Adhesive
Apply Unobond in a zigzag pattern or in beads to one surface. Avoid applying too close to the edges to reduce squeeze-out.
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4. Join Surfaces
Press surfaces together firmly to spread the adhesive. If needed, clamp or brace for 24 hours until set.
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5. Clean Up
Wipe excess adhesive immediately with a dry cloth or solvent cleaner. Cured material must be removed mechanically.
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6. Allow to Cure
Allow 24–48 hours for Unobond to fully cure under normal conditions. Do not disturb bonded elements during this time.
Limitations & Safety
Product Limitations
Not suitable for use in permanently submerged applications (e.g. pools, tanks).
Avoid bonding polyethylene, polypropylene, or Teflon® without surface treatment.
Do not apply to wet, frozen, or contaminated surfaces.
Unobond is not a structural adhesive for critical load-bearing joints.
Safety & Handling Guidelines
Personal Protective Equipment
Wear gloves and eye protection during application. Avoid skin and eye contact.
Ventilation
Use in a well-ventilated area. Vapours may be flammable — avoid ignition sources.
Storage & Disposal
Store in a cool, dry place below 30°C. Dispose of contents and container in accordance with local regulations.
First Aid Measures
Eye Contact: Rinse thoroughly with water for 15 minutes. Seek medical attention.
Skin Contact: Wash with soap and water. Remove contaminated clothing.
Inhalation: Move to fresh air. Seek medical advice if symptoms persist.
Ingestion: Do not induce vomiting. Rinse mouth and seek medical attention immediately.
Always refer to the Unobond Safety Data Sheet (SDS) for full details.
Unobond Substrate Compatibility & Surface Preparation
Timber, Plywood, MDF
Surface Prep
Ensure surfaces are dry, dust-free, and free of oils or coatings. Lightly sand glossy finishes.
Primer Not Required
Concrete, Masonry, Brick
Surface Prep
Remove loose particles, dust, or laitance. Use a stiff brush or compressed air to clean surfaces.
Primer Not Required
Metals (Galvanised, Aluminium, Mild Steel)
Surface Prep
Degrease with solvent wipe and abrade lightly to improve adhesion.
Primer Optional – Test for critical applications
Ceramics, Tiles & Fibre Cement
Surface Prep
Wipe clean to remove dust or contaminants. Ensure surfaces are dry and free from sealers or polish.
Primer Not Required
Plasterboard & Wall Linings
Surface Prep
Wipe with a dry cloth to remove dust. Avoid over-wet application.
Primer Not Required
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