ULTRASET^® HP

Bostik Ultraset^® HP is a solvent and isocyanate-free, one-part MS Polymer adhesive, proudly made in Australia, formulated to bond parquet, solid strip softwood and hardwood, engineered and bamboo timber flooring to concrete subfloors. It won't re-emulsify when in contact with moisture and remains flexible after full cure, giving a long-lasting bond that moves with timber as it expands and contracts.
Suitable for use over radiant heating, it's built for faster turnaround on site, with a tack-free time of approximately 1.25 hours, making it a trusted choice among flooring and parquet installers looking to keep jobs moving without compromising on bond strength or acoustic performance.

Why choose Ultraset^® HP?
It's non-hazardous, solvent and isocyanate-free, with very low VOC and non-flammable, and needs no mixing, so it's ready to use straight from the pail. Once applied, it delivers excellent initial grab and final bond strength, along with excellent acoustic properties, and stays flexible long after curing, helping timber floors handle natural movement without failure. It's tested to ASTM C794 for peel adhesion across Australian hardwood species and meets EN 14293:2006 requirements for bonding parquet to subfloors. 

Where to use it
Ultraset^® HP bonds parquet and finger block parquet, solid strip softwood and hardwood flooring, engineered flooring and bamboo flooring to concrete subfloors. It also works as an intermediate layer with acoustic underlays.
Trowel selection varies by flooring type and thickness, from a 3mm x 3mm x 3mm square notch for finger block parquet up to a 6mm x 6mm x 6mm square V notch for solid wood, solid bamboo, or plywood under 13mm thick.

TIP: Bonding to timber subfloors as well as concrete? Reach for Bostik Ultraset^® SF - HP is built for faster turnaround on concrete, while SF is the trusted, solvent-free choice that also bonds to timber subfloors, plywood, particleboard, joists and battens.