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Marmox Insulation and Waterpoofing Products

Desigining a bathroom? Impact Tiling can install Marmox insulation boards and Marmox shower bases, giving you a fully integrated wetroom solution for every bathroom. Whether you’re interested in making a building more environmentally friendly, meeting regulations, or simply cheaper to keep warm in the winter, Marmox is the perfect solution for insulating and waterproofing in one operation.

BRANZ Appraised Product

Marmox Building Products are BRANZ Appraised (Appraisal No. 895, 2018)

Marmox Building Products are a range of extruded polystyrene foam boards finished on both sides with a polymer-modified mortar facing reinforced with a glass fibre mesh. The boards are for use as an intermediate substrate to ceramic and natural stone tiling on internal floors. Marmox Building Products are also available prefabricated into shower bases, shower niches, footrests and hobs.

Marmox Insulation Boards

Marmox insulation boards are thin sheet boards designed to insulate the floor surface of new or existing buildings. Saving up to 50% of the heat lost with conventional underfloor heating, this will significantly improve heat-up time and greatly reduce running costs. When used over the wooden floor, Marmox also acts as a tile backer and will not absorb moisture when used in bathrooms or wet areas.


  • on walls and floors
  • partition wall
  • bath and shower base panels
  • wash tables and benches

Marmox Shower Bases

The Marmox Shower base system is a low-cost easy to install waterproof base used in the design of a wet room.  Marmox shower bases are available in a range of sizes to suit all shower layouts. Custom sizes are also available on order. 

Marmox ready-to-tile-over shower base is a preformed floor level panel that can be cut to fit the shower area. It is placed directly onto a concrete or wooden floor or it can be recessed. The Marmox shower base will help you create a fully waterproof shower area with total ease. 

You can use a channel drain 800mm for all the shower bases under 1000m side shower bases. 1000mm channel drain to be used for the shower bases 1200mm side length. For all shower bases that are 1500mm side length, you can use 1200mm channel drain or 1000mm channel drain+packers. For the shower trays that are 2000mm side length, you can use the channel drains 1800mm, 1200mm+packers, or 1000mm+packers.


  • Most economical waterproof system 
  • Acoustically better than sand and cement 
  • Hygienic as there is no moisture build up 
  • Suitable for all waterproofing and tiles 
  • Lightweight 
  • Preformed with appropriate falls 
  • Can be easily cut to fit all designs 
  • Perfect for existing timber or concrete floors 

2 hour turnaround on waterproofing

If you’re a builder / contractor, did you know you can shorten your waterproofing job turnarounds and tile 2 hours later?

Ardex wpm750 waterproofing products allow install of tiles 2 hours after waterproofing. Why wait a whole week for tile to go in after waterproofing, when it can be done the same day?

We can help you speed things up in your work pipeline. Minimise the stress of mounting jobs and reduce the impacts on your cashflow.

Book in a Tile Quote Here