Cladding is a great way to freshen up your home’s exterior. It easily masks any imperfections and comes in a wide range of colours and styles. Xtreme are very experience cladding installers, a process which is not easy to master.

Polystyrene Cladding

We only utilize the best materials when cladding a home. One of the most famous and useful materials is ThermaWallPlus®. The ThermaWallPlus® insulation core is made from most high quality Expanded Polystyrene (EPS) pre-finished with an enhanced coating system and strengthened with fibreglass mesh for strength. The EPS utilized in ThermaWallPlus® is treated with Perform Guard®, a not natural material that is a deterrent to termites. It provides completely integrated protection for the life of the ThermaWallPlus® used in a building’s construction. It is not a surface additive. if you want to know more about our cladding system and what options are right for you, give us a call on 0451 XTREME. You can also read more about cladding beneath. Heat flow is restricted from passing through ThermaWallPlus® by caught air. Temperatures are more easily controlled as heat does not easily escape or go through ThermaWallPlus®.

Multitude of applicationsThermaWallPlus® can be used for both straight and curved wall applications.
Design versatility and flexibilityThermaWallPlus® can be used on a wide spectrum of building styles where excellent thermal qualities are required.
Environmentally friendlyThermaWallPlus® is made from Expanded Polystyrene (EPS), one of the most environmentally friendly products on earth.
Energy efficientThermaWallPlus® is energy efficient during its manufacture. It provides energy savings for home owners.
High impact resistanceWith its reinforced fibreglass coating, ThermaWallPlus® is able to easily withstand everyday backyard knocks.
LightweightThermaWallPlus® sheets can be easily carried by one person unlike cement based sheet products. It is ideally suited where weight is a concern such as second floor installations.
Excellent thermal insulationThe thermal capabilities of ThermaWallPlus® assists designers and builders to achieve a high energy rating throughout the life of the building.
Cost effectiveThermaWallPlus® clads and insulates in the one operation. The large panels can quickly cover large external surfaces, leaving internal cavities free to enable easy installation of services.
Ease and speed of applicationThe 2500mm x 1200mm ThermaWallPlus® panels can quickly cover the exterior walls. The durable textured surface needs no preparation prior to render.
Accepts a variety of decorative and architectural finishesThermaWallPlus® panels are manufactured ready to accept render to achieve a variety of finishes.
Strengthens the structureBecause of its rigidity, ThermaWallPlus® adds racking strength to the frame or structure.
Termite resistanceThermaWallPlus® contains Perform Guard® – an exclusive termite resistant additive that assist resisting termite infestation.
Fire resistantThermaWallPlus® contains a fire retardant to reduce the likelihood of fire. This enables the EPS to self extinguish in small fires.


ThermaWallPlus® can be used in a wide variety of domestic, large-scale developments and industrial applications from traditional to contemporary designs. Because of its flexibility, ThermaWallPlus® opens up new design opportunities for architects and builders who seek to achieve the crucial five star energy rating, contributing to sustainable building practices.

Technical Specifications

The standard panel size is 2500mm x 1200mm, in nominal standard thickness of 40mm, 60mm, 75mm, and 100mm.

The mass of each ThermaWallPlus® panel is detailed below:

1.80 kg/m2*

*Approximate surface mass


How is ThermaWallPlus® fixed?
By screw fixing board back to frame.

What is the fire performance of ThermaWallPlus®?
ThermaWallPlus® comprises an EPS core that is made of self-extinguishing expanded polystyrene.
(It self-extinguishes when the source of the flame is removed.)

What is the noise/sound resisitance of the board?
No official tests have been conducted by RMAX, but with the use of other sound-inhibiting materials a wall made up of 40mm ThermaWallPlus® can obtain a rating of 40 STC. (See your distributor for further details).

What thickness do you recommend?

In Australia, due to the extreme variations in temperature, we recommend 75mm ThermaWallPlus® providing 2.45 R-value. It has excellent thermal insulating value and a depth of reveal at windows that enhances its architectural appearance.

How does it compare in price to bricks or fibre cement board?

ThermaWallPlus® saves time in erection costs due to the ease of installation, but we recommend that you discuss this with your local distributor, as transport and labour costs have a great bearing on the overall figures. Savings are ongoing as ThermaWallPlus® also insulates, reducing heating costs in winter and cooling costs in summer.

What thermal rating can I expect?

See Technical Data Manual. 75mm ThermaWallPlus® with 10mm plasterboard on a 90mm stud will generate 2.45 R-value.

What happens if someone hits it hard with a ball or a mower kicks stones against the wall? ThermaWallPlus® has a high impact resistance! The material may dent, depending on the velocity of the projectile, but the dent is very easily patched.

Who stocks the product, can I purchase direct from RMAX? Contact your local distributor. RMAX does not sell ThermaWalPlus® direct to the public. Who can install the product?

Best success has been through carpenters, texture coaters or qualified tradesman. Your local distributor can provide names of experienced installers. Is ThermaWallPlus® termite resistant?

ThermaWallPlus® contains Perform Guard® – an exclusive termite resistant additive. RMAX Perform Guard® EPS is termite resistant but should always be used as part of an overall termite treatment program.

We Provide the Best Service in Industry​

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