ULTRA MASTIK

Bostik Ultra Mastik is a premium white cementitious tile adhesive with superior anti-slip performance and a smooth trowel feel, formulated to hold large format 600x600mm wall tiles. It bonds all moisture-stable tile types, including porcelain, ceramic, terracotta, terrazzo, glass and stone, to a wide range of wall and floor substrates for commercial and high traffic installations.
Made in Australia, Bostik Ultra Mastik is suitable for large-scale jobs and high traffic commercial areas, and capable of immersion applications such as swimming pools when 50% of the mix water is replaced with Bostik Megalastic, it's a trusted choice among tilers for excellent water resistance and non-slump handling on large tiles.

Why choose Bostik Ultra Mastik?
It delivers excellent water resistance, a smooth trowel feel, and a strong bond that holds up after exposure to water, heat and freezing conditions. It's classified C2S1ET under AS ISO 13007, denoting an improved cementitious, deformable adhesive with extended open time and slip resistance. 

Where to use it
Bostik Ultra Mastik bonds porcelain, ceramic, terracotta, terrazzo, glass and stone tiles to concrete, render, early age (green) screed, fibre cement, plasterboard and approved Bostik waterproofing membranes, on both walls and floors.
It is not suitable for moisture-sensitive stone, tile, or other materials unless tested. Outdoor tile size is limited to 300x300mm, and for immersion applications 50% of the mix water must be replaced with Bostik Megalastic.

TIP: Need a brilliant white adhesive specifically for bathroom mosaics or light-coloured wall tiles? Reach for Bostik Megafix.