EXPOL-X for Retaining Wall Insulation

Made from rigid, extruded polystyrene foam (XPS), EXPOL-X displays excellent strength and water resistance when used in retaining wall insulation.

A thin, lightweight insulation board, EXPOL-X is easy to handle and quick to install.  It is preferred by specifiers because of its durability and superior thermal insulation properties, that will last the life of the building.

Use EXPOL-X for protection against heat, cold and moisture in concrete floors, concrete floor edging, cladding systems and masonry wall cavities.

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Choose your thickness

IDEAL USES

RETAINING WALLS

A rigid foam polystyrene board, EXPOL-X exhibits excellent water tightness qualities, making it ideal for the protection of retaining wall membranes and providing exterior insulation.  EXPOL-X is lightweight making it easy to handle and install.

EXPOL also supplies EXPOL ThermaSlab for protection of retaining walls and EXPOL StyroDrain as an alternative to drainage material.

OTHER APPLICATIONS

EXPOL-X is also used in other applications where compressive strength, water resistance and superior R-value are required.  This includes under concrete floor insulation, perimeter insulation on concrete edges, in cladding systems and in masonry wall cavities.

MORE ABOUT EXPOL-X

Often used in applications that are subject to persistent pressure from ground water and compression, EXPOL-X is a high performing extruded polystyrene insulation product.

EXPOL-X polystyrene insulation sheets are highly water resistant and provide an extremely high insulation value (R-value).  The durable nature of extruded polystyrene ensures that the water tightness and R-value of the material is retained for the life of the building.

Specifiers looking for a product that offers excellent performance for a range of uses in diverse climate conditions turn to EXPOL-X.  

SYSTEM COMPONENTS

CONSTRUCTION ADHESIVE 

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EXPOL supplies a water-based glue to adhere polystyrene to most surfaces. EXPOL-X retaining wall insulation is glued in place using this adhesive or can be used in combination with other fixing methods. 

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

EXPOL-X is used to add insulation to the exterior of a retaining wall. It will also give protection to the waterproofing membrane or tanking on the retaining wall.  This is important so the back fill material (scoria) does not damage the membrane.

Place EXPOL-X hard up against the retaining wall after the water proofing membrane or tanking has been applied. EXPOL-X should be held in place while the drainage material is added. EXPOL supplies a construction adhesive for this purpose.

EXPOL-X should cover all waterproofing membrane and tanking.  Ensure EXPOL-X sheets are not exposed at the top of the wall.

See our Masterspec document for further information.

Technical information

 

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FREQUENTLY ASKED QUESTIONS

How does EXPOL-X protect retaining walls?

Because of its superior water tightness, EXPOL-X protects the waterproofing membrane or tanking from water ingress or damage from the backfill material (scoria).  EXPOL-X also insulates retaining walls from extreme fluctuations in temperature.

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.

What size does EXPOL-X come in?

EXPOL-X comes in one size, 2500mm x 600mm sheets.

Does EXPOL-X help with drainage?

No. EXPOL-X is not a drainage material.  EXPOL StyroDrain is a lightweight solution for retaining wall drainage.

WHERE TO BUY

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 Expol Retaining Wall products which may be of interest

EXPOL ThermaSlab S Grade

EXPOL StyroDrain

Fast Facts
  • Exhibiting superior water and moisture resistance properties, EXPOL-X is an ideal in applications under persistent pressure from water and load.
  • Extruded polystyrene insulation is a simple and effective way to prevent heat loss from a building’s walls.
  • A rigid foam insulation board, EXPOL-X does not settle over time, thus ensuring the thermal insulation performance for the life of the building.
  • EXPOL supplies EXPOL StyroDrain for retaining wall drainage and EXPOL ThermaSlab for an EPS retaining wall solution.
  • EXPOL-X is a highly durable foam insulation board suitable for use in diverse climate conditions.

R-Value Calculator

Sheet Calculator

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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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