Marmox Insulation Boards
The Foundation for Faster, Smarter Underfloor Heating
To get the best results from your electric underfloor heating system, it’s essential to start with the right base. Marmox Insulation Boards are lightweight, waterproof, and highly effective thermal insulating boards that enhance efficiency, speed up heating times, and reduce heat loss.
At Cosy Toes, we recommend Marmox boards in most underfloor heating projects — especially in bathrooms, on ground floors, or over cold subfloors. And best of all? Marmox can often replace your standard tile underlay, meaning the cost difference is small — but the benefits are tenfold.
Why Choose Marmox Boards?
• Faster Heat-Up Times
Prevents heat from disappearing into your slab or substrate. Warmth rises into your room quicker, with less energy needed.
• Improved Energy Efficiency
Reduces downward heat loss and helps maintain stable floor temperatures — keeping your home warmer, for longer.
• 100% Waterproof & Mould Resistant
Ideal for bathrooms, laundries, and wet areas — Marmox won’t absorb moisture or allow mould growth like timber or fibre-cement boards can.
• Strong but Lightweight
Made from high-density extruded polystyrene with a reinforced cement surface. Tough enough for tiles, stone, and flooring, yet easy to handle and cut.
• Superior Thermal & Acoustic Insulation
Creates a comfortable, efficient, and quieter environment — especially helpful in upstairs bathrooms or tiled apartments.
• Swap for Standard Tile Underlay
Marmox can be used in place of cement sheet or tile underlay. This means the additional cost is minimal, but the performance improvement is massive.
• Easy to Install
DIY- and builder-friendly. Works seamlessly with both Warmset and Warmup electric heating systems.
- Globally trusted with over 25 years of experience
- Suitable for tiles, carpet, timber, screed, and concrete floors
- Supplied Australia-wide
- Professional installation available in Melbourne metro
- Lifetime warranty when installed by Cosy Toes
- Flexible options to suit homes of all sizes
- Cost-effective solutions with proven performance
Where to Use Marmox Boards:
- Beneath electric underfloor heating
- Tile, stone, or engineered timber floors
- Bathrooms, kitchens, ensuites & laundries
- Concrete slabs, suspended floors, and cold subfloors
- Wall linings in wet areas (e.g. shower walls or niches)
Professional Supply & Installation
Cosy Toes proudly:
- Supplies Marmox boards Australia-wide
- Offers installation across Melbourne metro
- Works with builders, tilers, and DIYers
- Provides expert advice on how to maximize performance and reduce energy use
Whether you’re planning a luxury ensuite or a large tiled living space, Marmox is the smart base layer for your underfloor heating system.
For more product information, visit www.marmox.com.au
