MasterTop 546 - Rapid setting cementitious floor underlayment

Where and how does MasterTop 546 work?

MasterTop 546 is an economical, non-sag, cementitious, non-structural, floor patching material intended for use over poured in-situ and precast concrete floors which will be covered by a cementitious underlay.

Recommended uses:

  • Filling holes and penetrations
  • Levelling up floors
  • Ramps
  • Coves
  • Internal floors above or below grade

What makes MasterTop 546 unique solution?

MasterTop 546 has been specifically formulated to achieve fast setting mortar.

How you will enjoy the benefits of MasterTop 546?

  • Rapid strength gain - fast installation of MasterTop 546 and subsequent toppings
  • Simple installation – trowellable
  • Shrinkage compensated - to reduce potential cracking
  • Fast continuation of underlayment application - ready for foot traffic after 60 minutes
  • Fast return to service - return to service in 2 hours
  • Multi-purpose – compatible with most floor covering adhesives

Note: MasterTop 546  is not suitable as a finished topping layer for external use.


MasterTop 546: Safety Data Sheet Australia

pdf (38.85 Kb)

MasterTop 546: Technical Data Sheet

pdf (110.99 Kb)

MasterTop Levelling Application Guide

pdf (255.93 Kb)