For fixing wallboards, timber flooring, and interior mouldings where joint movement can cause squeaks or structural warping, Adheseal Multi-Tack Acrylic Sealant provides a high-strength, flexible bond. This water-based adhesive complies with AS:2753 for fixing plasterboard wallboards and AS:2329 for fixing other wallboards, ensuring compliant installation performance under typical building movement.
How it works
Multi-Tack is a moisture-loss curing acrylic paste with a high solids content (greater than 80%) that dries to a flexible, shock-resistant bond. Unlike rigid adhesives, its 434% elongation at break allows the cured adhesive to accommodate the natural movement of timber, particle board, and plasterboard wall systems without cracking or losing adhesion. The paste consistency has non-sag, anti-drip properties for clean overhead cornice and ceiling installations. It is also safe to use directly on polystyrene foam components without melting or degrading the substrate.
Numbers that matter
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434% Elongation at break: High elasticity at 7 days that accommodates structural shifting and timber shrinkage to prevent joint failure.
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42.6 kg-f/cm² Wood adhesion: High early bond strength on wood substrates measured at 1 day to secure panels quickly.
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30-Minute skin time (at 25°C and 50% RH): Practical open time to position and adjust large sheets, panels, or tongue-and-groove flooring before the surface skins.
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Less than 49g/L VOC: Low-volatile organic compound formulation meeting Californian Rule 1168 for indoor air quality.
Where to use it
Multi-Tack bonds to timber, particle board, plastaboard, metal, concrete F.C. Sheeting, and polystyrene foam. Common applications include:
- Installing timber flooring to joists and running adhesive directly into tongue-and-groove joints to eliminate subfloor squeaks.
- Installing wall sheeting, internal and external mouldings, and plasterboard cornices.
- Attaching structural framing timber to studs and joists to assist in preventing warping as the timber dries.
- Bonding to damp construction surfaces when wet weather affects the job site.
Limitations
- Do not use on surfaces that are saturated with water.
- Not suitable for constant water immersion.
- Clean up uncured adhesive immediately with water; once cured, the material cannot be cleaned with water alone.
Installation and coverage
Ensure all substrates are clean, dry, and free of dirt. Sand any warped or twisted timber beforehand to achieve flush surfaces. Apply a 6mm to 10mm bead of adhesive to the joists or studs using a minimum 6mm nozzle. Where panels butt together, apply two parallel beads approximately 25mm apart. Lay sheets into position with minimal sliding over the wet adhesive, then fasten the panels according to the flooring or board manufacturer's instructions.
A single 6mm bead will cover approximately 9 lineal metres per 300ml cartridge.