EXPOL Platinum Board for Cladding Insulation

A premium polystyrene insulation product for exterior insulation finishing systems (EIFS), EXPOL Platinum Board reduces heating and cooling costs and contributes to a comfortable interior living space.

The addition of graphite to expanded polystyrene (EPS) creates a product that offers one of the most effective forms of insulation available.  

Specifiers and installers prefer high performance EXPOL Platinum Board because it satisfies all of the necessary requirements of a preferred product for EIFS.

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Cladding Insulation

EXPOL Platinum Board is a premium polystyrene solution for exterior insulation finishing systems (EIFS) that achieves superior R-values relative to its thickness.  The rigid foam composition of EXPOL Platinum Board ensures it will not slump or sag.  It is available in full sheets and is easy to cut to a specific size.

Other Applications

EXPOL Platinum Board is also suitable for use as masonry wall insulation, wall insulation, concrete floor insulation and skillion roof insulation.


EXPOL Platinum Board is a lightweight expanded polystyrene (EPS) board that is easy to handle and easy to install.  

An inert product, EPS does not degrade over time meaning that thermal insulation performance is ensured for the life of the building.  At a thickness of 30mm, EXPOL Platinum Board delivers an R-value of .94.  

Compared to high density EPS, Platinum Board uses fewer raw materials during processing without reducing insulation performance.  This makes EXPOL Platinum Board one of the most eco-efficient choices for polystyrene insulation. 

The unique matrix structure of EXPOL Platinum Board gives exceptional rigidity and strength.  EXPOL Platinum Board has a well-regarded reputation as a reliable insulation product suitable for use in floors, walls and roofs.

For cost effective cladding insulation, choose EXPOL ThermaSlab S. For applications where high water resistance and compressive strength is required, choose EXPOL-X.



EXPOL supplies a range of polystyrene battens to suit all cladding systems.



EXPOL supplies 40mm plastic washers to increase the surface area of nail fixings.



EXPOL supplies a water-based glue to adhere polystyrene to most surfaces. Cladding insulation panels are glued in place using adhesive or can be used in combination with other fixing methods. 



EXPOL Platinum Board comes in five lengths at 1200mm wide.  Sheets can be cut to specific sizes.



All sizes above are examples of some standard situations
NOTE: Other widths available


Does EXPOL Platinum Board satisfy the requirements for a preferred provider of EIFS?

Yes. EXPOL’s EPS sheets have been tested and satisfy all the requirements necessary to be listed as a preferred supplier for all EIFS.

How effective is EXPOL Platinum Board for thermal insulation?

Made of 98% trapped air, EPS demonstrates excellent thermal insulation properties. With added graphite, EXPOL Platinum Board gives even higher R-value than other EPS boards.

Is EXPOL Platinum Board durable?

The unique matrix structure of expanded polystyrene (EPS) creates block rigidity and compressive strength making it an excellent choice for wall insulation.  An inert, rigid foam product, EPS holds its shape and does not deteriorate with age.  EPS does not settle over time, thus ensuring the R-value for the life of the building.

Does EXPOL Platinum Board give off toxic fumes?

In the event of a fire, the level of toxicity of EPS is no greater than timber.  EPS does not off-gas hydrogen cyanide or hydrogen chloride.  No CFCs or HCFCs are used in the manufacture of EXPOL Platinum Board.

Is EXPOL Platinum Board water resistant?

The closed cell construction of expanded polystyrene (EPS) ensures it resists any adverse effects of water.

Technical information



EXPOL products are available at a number of leading building products stores. Find your nearest stockist here.

View Expol Distributors in a larger map

Other Cladding products which may be of interest

EXPOL ThermaSlab S and H Grades


Fast Facts
  • A premium expanded polystyrene wall insulation product, EXPOL Platinum Board will not sag, degrade or allow thermal loss over time.
  • A thin, lightweight board, EXPOL Platinum Board is fast and easy to install.
  • With the highest R-value of all of EXPOL’s EPS wall insulation products, EXPOL Platinum Board is a premium choice for exterior wall claddings.
  • EXPOL Platinum Board is one of the most eco-efficient choices for insulation, yet does not compromise on performance.
  • The addition of graphite to the EPS gives EXPOL Platinum Board superior insulation and sound absorption performance.
  • Made of 98% air, EPS does not settle over time, ensuring the R-value for the life of the building.

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Enquiry Form

General Enquiry

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73


105 Captain Springs Rd., Onehunga, Auckland

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73


105 Captain Springs Rd., Onehunga, Auckland

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