EXPOL-X for Concrete Floor Insulation

When strength and durability matter, use EXPOL-X under concrete slabs for the ultimate protection against heat, cold and moisture.

Made from environmentally safe extruded polystyrene (XPS), EXPOL-X reduces the energy consumption of a building by providing a consistent level of insulation in high and low temperatures.

A dense, rigid foam insulation board, EXPOL-X demonstrates far greater compressive strength than expanded polystyrene (EPS) boards, making it the ideal choice for load-bearing applications.

EXPOL-X is also an excellent choice under concrete floors, in masonry walls, retaining walls and cladding insulation.

 

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IDEAL USES

CONCRETE FLOORS

With exceptionally high levels of compressive strength and water resistance, EXPOL-X is a premium choice for insulation under concrete floors.  EXPOL-X is well suited to applications where high loadings are a factor.

OTHER APPLICATIONS

EXPOL-X is also used in other applications where compressive strength and water resistance is required.  This includes concrete floor edges, as masonry wall insulation, retaining wall insulation and cladding insulation.

MORE ABOUT EXPOL-X

With significant heat loss occurring through the concrete slab of a building, using EXPOL-X as underfloor insulation ensures a warm, dry building with reduced heating and cooling costs.

Specifiers looking for a product that offers excellent performance for a range of uses in diverse climate conditions turn to EXPOL-X. Often used in applications that are subject to pressure and moisture, EXPOL-X is a high performance extruded polystyrene insulation product. EXPOL-X is used in applications that are exposed to persistent pressure from groundwater or heavy loads.

SYSTEM COMPONENTS

EXPOL Pod Stick

EXPOL-Pod-Stick.jpg

Used as an alternative to Mesh / Bar Chairs. Provides more support for steel mesh over polystyrene.

MESH/BAR CHAIRS

system-components.jpg

Once EXPOL-X Boards are laid, mesh chairs are placed on the board ready for reinforcing mesh. EXPOL supply bar chairs for steel mesh support.

HOW MUCH DO I NEED?

CHOOSING THE RIGHT PRODUCT

EXPOL-X comes in one size; 2500mm x 600mm wide.

CALCULATING HOW MUCH PRODUCT YOU NEED

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INSTALLATION INSTRUCTIONS

EXPOL makes insulating easy.  To ensure you get the best result, follow these simple steps.

Installing EXPOL-X

Simply butt the sheets together on top of the DPC (polythene). 

It is important that the polystyrene sheets are not placed under any footings or thickenings for load bearing walls unless specified by an engineer.

The sheets can be taped together however this is not absolutely necessary. 

Once the sheets have been laid, place the reinforcing mesh on top using the required mesh chairs. 

See our Masterspec document for further information

Technical information

EXPOL-X-Concrete-Floor-Insulation-table.jpg

FREQUENTLY ASKED QUESTIONS

What is the difference between EXPOL-X and EXPOL’s Platinum Board and ThermaSlab products?

EXPOL Platinum Board and EXPOL ThermaSlab are expanded polystyrene (EPS) insulation boards and are both excellent choices for concrete floor insulation.  EXPOL Platinum Board has the addition of graphite that gives it a higher R-value for greater thermal insulation performance and ThermaSlab is a more economical choice.  EXPOL-X is extruded polystyrene (XPS) board suitable when high compressive strength and R-value is required. 

Is EXPOL-X durable?

The closed cell structure of EXPOL-X gives it resistance to moisture and compression, ensuring that insulation performance will last the lifespan of the building.  Extruded Polystyrene Insulation (XPS) is often used under roads, rail tracks and other load-bearing applications.  EXPOL-X is rot-proof and offers no nutritional value to rodents or termites.

What sizes does EXPOL-X come in?

EXPOL-X comes in 2500mm x 600mm sheets, with varying thicknesses available.

WHERE TO BUY

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

View Expol Distributors in a larger map

Other Concrete Floor Insulation products which may be of interest

EXPOL ThermaSlab S and H Grades

EXPOL ThermaSlab VH Grade

EXPOL Platinum Board

EXPOL Edging

Fast Facts
  • When used with concrete edge insulation, EXPOL-X concrete slab insulation creates a total envelope of thermal protection.
  • Choose EXPOL-X to reduce the energy needed for cooling and heating buildings.
  • A rigid foam insulation board, EXPOL-X does not settle over time, thus ensuring the R-value is maintained for the life of the building.
  • EXPOL-X demonstrates excellent resistance to water ingress, making it an ideal choice under concrete slabs.

R-Value Calculator

Sheet Calculator

Area to be insulated

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General
Enquiry Form

General Enquiry

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73

sales@expol.co.nz

105 Captain Springs Rd., Onehunga, Auckland

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73

sales@expol.co.nz

105 Captain Springs Rd., Onehunga, Auckland

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