Price Per Unit: $15.56
Price Per Box: $14.00
Unobond is a single-component, structural-grade polyurethane construction adhesive engineered specifically for timber trade professionals. It utilises moisture from the substrate or atmosphere to trigger a curing reaction, forming a powerful, rigid, and highly water-resistant bond that qualifies for the stringent D4 classification. Engineered for performance, Unobond features a slight expansion during cure, which allows it to fill minor irregularities and gaps, ensuring a solid, void-free bond line. Its excellent adhesion to a vast range of common building materials makes it an indispensable tool for carpenters, joiners, builders, and marine fabricators who require a reliable, fast-setting, and waterproof structural adhesive.
Metric | Unobond | Standard D3 PVA Glue | Advantage |
---|---|---|---|
Water Resistance | D4 Classification | D3 Classification | Offers superior water resistance suitable for exterior use and frequent long-term exposure to running water, where D3 glues would fail. |
Cure Speed | 30 Min Initial Set | 2-4 Hours | Dramatically reduces clamping time, allowing for faster assembly and project turnaround. Full strength is achieved in 24 hours. |
Substrate Versatility | Bonds Wood, Metal, Plastic, Masonry | Primarily Wood | Provides a powerful bond across an extremely wide range of dissimilar materials, making it a highly versatile, single-product solution. |
Gap Filling | Yes (Slight Expansion) | No | Expands slightly during cure to fill minor surface irregularities and gaps, ensuring a more complete and solid bond line. |
Unobond's performance relies on correct system application. As a moisture-curing adhesive, it requires one of the two bonded surfaces to contain moisture (e.g., timber, concrete, plasterboard). When bonding two non-porous materials, a very light mist of water on one surface is necessary to initiate the cure. For maximum bond strength, consistent pressure must be applied via clamping, screwing, or nailing during the initial 30-minute set time. This ensures close contact and manages the slight expansion, resulting in a dense, powerful, and fully integrated bond line. Its cured state is compatible with most paints and coatings, though testing is always recommended.
Achieving the EN 204 D4 classification for water resistance means Unobond creates bonds that withstand long-term exposure to moisture, humidity, and weathering. This prevents delamination in exterior woodwork, marine craft, and wet area fit-outs where lesser adhesives would fail.
When applied into the tongue and groove of flooring panels, the adhesive's slight expansion takes up any micro-voids within the joint. This creates a solid, unified structure that prevents the panel movement and friction that cause squeaking, resulting in a silent, stable floor.
The controlled expansion during the cure allows Unobond to fill minor gaps and irregularities between two substrates. This ensures a larger effective bonding area and a more solid connection, preventing weak spots that can occur with non-foaming adhesives on imperfectly matched surfaces.
The Engineering Challenge: Creating imperceptible, structural, and completely waterproof joints in cabinetry destined for wet areas. The bond must not fail or swell from long-term exposure to moisture and humidity.
The System-Based Solution with Unobond: Unobond's D4 classification provides total peace of mind for wet area joinery. Its controlled, slight expansion ensures mitres and joints are filled completely for maximum rigidity, while its rapid 30-minute set time allows for faster workshop throughput. It provides a structural bond for timber, particleboard, and laminates, ensuring lasting quality.
Best Practice Note: Apply a thin, consistent bead. When clamped, any excess squeeze-out will foam slightly. Allow it to cure fully before cleanly removing it with a sharp chisel for a perfect, invisible glue line.
The Engineering Challenge: Achieving a structural bond on framing timbers and subfloors quickly and reliably on a busy building site, and eliminating the risk of costly call-backs for floor squeaks.
The System-Based Solution with Unobond: Unobond's extreme versatility allows it to bond timber joists to particleboard, concrete slabs, or steel bearers. Its fast set time means subfloors can be fixed and walked on sooner. When used on tongue & groove flooring, its expansion locks the joint solid, permanently preventing the movement that causes squeaks.
Best Practice Note: On-site, ensure surfaces are free from dust and debris for the best bond. A quick brush or wipe is sufficient. Ensure panels are fixed with nails or screws to apply consistent pressure as the adhesive cures.
The Engineering Challenge: Constructing timber components for boats or outdoor furniture that can withstand constant exposure to water, UV, and salt spray without any joint failure or delamination.
The System-Based Solution with Unobond: The D4 waterproof rating is essential for marine environments. Unobond creates a bond that is stronger than the wood itself and is unaffected by temperature cycles or moisture, making it the ultimate choice for laminating, joinery, and structural assembly in boat building and high-quality exterior furniture.
Best Practice Note: For maximum water resistance in end-grain joints, ensure the adhesive is worked well into the timber. A firm clamping pressure for at least one hour is critical to ensure a dense, impermeable bond line capable of handling the rigours of a marine environment.
Unobond is engineered to meet the highest standards for wood adhesives, providing verifiable performance for professional applications.
Unobond has a minimum shelf life of 12 months when stored in original, unopened containers. For maximum performance and shelf life, store cartridges in a cool, dry place between 15°C and 25°C, away from direct sunlight. As a moisture-curing product, ensure the cap is replaced tightly after use to prevent the adhesive inside the nozzle from curing.
Q: Why does Unobond foam or expand during cure? Is this normal?
A: Yes, this is a normal and beneficial feature. Unobond is a moisture-curing polyurethane, and the slight expansion is part of its curing reaction. This foaming action helps to fill small gaps and irregularities between the substrates you are bonding, ensuring a more complete, solid bond line with no voids.
Q: Can I use this to glue two non-porous materials, like two pieces of sheet metal, together?
A: Unobond needs moisture to cure properly. While it has excellent adhesion to metal, bonding two non-porous surfaces will be very slow as it can only draw moisture from the air. For a strong, fast cure in this scenario, you must apply a very fine mist of water to one of the surfaces before bringing them together.
Q: What does the D4 water resistance classification actually mean for my job?
A: D4 is the highest water resistance rating under the key European standard EN 204. It certifies that the bond can withstand frequent, long-term exposure to running water and weathering. This makes it the correct choice for jobs like exterior furniture, window frames, and marine applications where other glues like D3 PVA would eventually fail.
Q: How important is clamping? Can I just hold it in place?
A: Clamping is essential to achieve maximum bond strength. While the pressure doesn't need to be extreme, consistent pressure from clamps, screws, or nails for at least 30-60 minutes is required. This keeps the surfaces in intimate contact during the initial set and controls the slight expansion for the strongest possible bond.
Application / Use Case | Key Benefit | Primary Trades |
---|---|---|
Exterior woodwork (furniture, pergolas, frames) | D4 water resistance ensures the bond will not fail due to constant weather exposure. | Carpenters, Joiners, Woodworkers |
Marine fit-outs and repairs (above waterline) | Creates a structural, highly water-resistant bond suitable for demanding marine environments. | Marine Fabricators, Boat Builders |
Bonding tongue & groove flooring panels | Slight expansion fills all voids, creating a solid, locked-in floor system that eliminates squeaks. | Carpenters, Builders, Flooring Installers |
Bonding dissimilar materials (e.g., metal to timber) | Extremely versatile adhesion profile allows for structural bonding without mechanical fasteners. | Builders, Carpenters, Fabricators |
Structural assembly of cabinetry and frames | Fast 30-minute set time and high final strength speeds up production and assembly work. | Cabinet Makers, Joiners, Builders |
The Engineering Challenge: Creating imperceptible, structural, and completely waterproof joints in cabinetry destined for wet areas. The bond must not fail or swell from long-term exposure to moisture and humidity.
The System-Based Solution with Unobond: Unobond's D4 classification provides total peace of mind for wet area joinery. Its controlled, slight expansion ensures mitres and joints are filled completely for maximum rigidity, while its rapid 30-minute set time allows for faster workshop throughput. It provides a structural bond for timber, particleboard, and laminates, ensuring lasting quality.
Best Practice Note: Apply a thin, consistent bead. When clamped, any excess squeeze-out will foam slightly. Allow it to cure fully before cleanly removing it with a sharp chisel for a perfect, invisible glue line.
The Engineering Challenge: Achieving a structural bond on framing timbers and subfloors quickly and reliably on a busy building site, and eliminating the risk of costly call-backs for floor squeaks.
The System-Based Solution with Unobond: Unobond's extreme versatility allows it to bond timber joists to particleboard, concrete slabs, or steel bearers. Its fast set time means subfloors can be fixed and walked on sooner. When used on tongue & groove flooring, its expansion locks the joint solid, permanently preventing the movement that causes squeaks.
Best Practice Note: On-site, ensure surfaces are free from dust and debris for the best bond. A quick brush or wipe is sufficient. Ensure panels are fixed with nails or screws to apply consistent pressure as the adhesive cures.
The Engineering Challenge: Constructing timber components for boats or outdoor furniture that can withstand constant exposure to water, UV, and salt spray without any joint failure or delamination.
The System-Based Solution with Unobond: The D4 waterproof rating is essential for marine environments. Unobond creates a bond that is stronger than the wood itself and is unaffected by temperature cycles or moisture, making it the ultimate choice for laminating, joinery, and structural assembly in boat building and high-quality exterior furniture.
Best Practice Note: For maximum water resistance in end-grain joints, ensure the adhesive is worked well into the timber. A firm clamping pressure for at least one hour is critical to ensure a dense, impermeable bond line capable of handling the rigours of a marine environment.