For bonding sheet metals, fibre cement sheet, plywood, and particle board to expanded polystyrene foam, Everbond Styrobond ST is a spray-grade contact adhesive formulated with specialised solvents that will not melt or degrade the polystyrene substrate. Its low viscosity allows application through conventional spray setups, wet-on-wet brush, or roller systems without solvent-eat failures.
Everbond Styrobond ST relies on an evaporation curing system. Unlike standard contact adhesives containing aggressive solvents that dissolve expanded polystyrene, this rubber-solvent formulation bonds securely to the foam surface without compromise. The adhesive must be applied to both mating surfaces, allowed to dry completely to prevent trapped solvents from weakening the bond, and then joined under physical pressure to achieve a permanent, heat-resistant contact bond.
Ensure all surfaces are clean, dry, and free of grease, oil, and dust. Wipe metals clean with solvent before application. Apply a liberal, even coat to both surfaces. Porous materials will require a heavier coat than non-porous substrates.
Once the adhesive films are dry, bring the surfaces together immediately. Apply uniform pressure using a mechanical nip-roller, hand roller, rubber mallet, or a wooden block and mallet. For edge strips or difficult-to-lay laminates that show signs of lifting or curling under varying atmospheric conditions, maintain pressure using G-clamps or sash clamps throughout the bonding period.
Clean up wet adhesive using Hexane or Xylene. Dried adhesive must be removed by mechanical scraping.
No, Styrobond ST is specifically formulated with special solvents that do not degrade expanded polystyrene foam. Conventional contact adhesives often contain solvents that will attack foam, leading to damage and bond failure.
The low viscosity of Styrobond ST makes it suitable for conventional spray equipment. Apply an even coat to both surfaces from 20-30 cm away and use mechanical nip-rollers with at least 700 Kg/m² pressure for optimal bonding.
Application should occur between 10°C and 35°C. Avoid temperatures below 18°C, especially with high humidity, as this can cause condensation and lead to faulty bonds. Ensure surfaces are completely dry, particularly for non-porous materials.
Yes, Styrobond ST is classified as a hazardous chemical and dangerous good (Class 3 Flammable Liquid, Poison Schedule 5). It contains flammable liquid and vapour, can cause skin irritation, and is classified as reproductive toxicant Category 1A. Consult the SDS for full safety and handling instructions.
| Application | Key benefit | Primary trades |
|---|---|---|
| Bonding sheet metals to expanded polystyrene foam | Prevents foam degradation often caused by conventional adhesives, ensuring panel integrity. | Insulated panel manufacturers, fabricators, builders |
| Securing fibre cement sheets to expanded polystyrene foam | Delivers a strong, reliable bond without compromising the foam's structure. | Construction, cladding installers, pre-fab specialists |
| Attaching plywood or particle board to expanded polystyrene foam | Maintains foam integrity while creating robust composite panels or structures. | Joiners, cabinet makers, display fabricators |
| Assembly of foam-core panels or structural insulated panels (SIPs) | Ensures adhesive compatibility with expanded polystyrene for durable, long-term performance. | Panel manufacturers, building system suppliers |
The Engineering Challenge: Avoiding foam damage during large-scale EPS panel bonding on site.
The System-Based Solution with Styrobond ST: Spray-grade application provides quick, even coverage without melting foam, reducing material failure.
Best Practice Note: Always ensure solvents are fully evaporated before joining to prevent bond failure.
Danger: Flammable liquid and vapour. May cause skin irritation. May be fatal if swallowed and enters airways. Suspected of damaging fertility or the unborn child. May cause damage to organs through prolonged or repeated exposure.
Wear overalls, safety glasses, gloves (nitrile rubber recommended for intermittent contact), and a suitable respirator (organic vapour/particulate type if inhalation risk exists).
Use only outdoors or in a well-ventilated area. Natural ventilation may be adequate for normal use; however, ensure flameproof electrical, ventilating, and lighting equipment are used in the work area.
Store in a cool, dry, well-ventilated place between 10°C and 35°C, away from direct sunlight, foodstuffs, incompatible materials, and ignition sources. Keep containers tightly closed and upright. Dispose of contents and container according to local regulations. Shelf life is 12 months.
Proper surface preparation is crucial for strong, lasting bonds. This guide outlines requirements for common substrates used with Styrobond ST.
Surface prep: Surfaces must be clean and dry. Remove all grease, oil, and dust. For maximum bond strength, wipe clean with a suitable solvent before adhesive application.
Primer: Not required for bonding to expanded polystyrene foam.
Surface prep: Ensure surfaces are clean, dry, and free from loose debris, oil, or dust. A heavier coat of adhesive may be needed on porous surfaces to ensure full coverage.
Primer: Not required for bonding to expanded polystyrene foam.
Surface prep: Foam surfaces must be clean, dry, and free from dust or other contaminants that could inhibit adhesion.
Primer: Not required. Styrobond ST is specifically formulated for direct application to expanded polystyrene foam.
| Property | Value |
|---|---|
| Product Type | Rubber solvent |
| Curing System | Evaporation |
| Density (g/cm³) | 1.1 |
| Consistency | Sprayable Liquid |
| Thinners | Hexane |
| Application Temperature | 10°C – 35°C |
| Storage Temperature | 10°C – 35°C |
| Coverage (Brush/Roller) | 1.5 m² per litre (bonded area) |
| Coverage (Spray) | 2.5 m² per litre (bonded area) |
| Wet Clean Up | Hexane, Xylene |
| Dried Clean Up | Mechanical |
| Shelf Life | 12 months |
| Colours | Clear, Green |
| Specific Gravity (20 °C) | 0.770 Kg/Lt |
| Relative Vapour Density (air=1) | Approx 3 |
| Vapour Pressure (20 °C) | 15 kPa (Estimated) |
| Flash Point | -20 °C |
| Flammability Limits | 1.0 - 7.5 % (V/V) |
| Autoignition Temperature | >350 °C |
| Boiling Point/Range | > 66 °C |
| Poison Schedule | S5 |
Here are some common examples on where Everbond Styrobond ST used by our customers.
