EXPOL ThermaSlab S Grade for Retaining Wall Protection
To protect the waterproof membrane of retaining walls, use high performing EXPOL ThermaSlab.
Made from expanded polystyrene (EPS), EXPOL ThermaSlab is a durable foam board that is easy to handle on site and quick to install.
EXPOL ThermaSlab is available in a range of thicknesses, and offers long-term protection when using gravel or scoria for drainage.
EXPOL also supply EXPOL-X and EXPOL StyroDrain for protection, insulation and drainage of retaining walls.
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Retaining Wall Insulation products.
View our short video highlighting the main products used when building retaining walls.
Choose your thickness
When using gravel or scoria for drainage, EXPOL ThermaSlab provides long-lasting protection of the waterproof membrane. EXPOL ThermaSlab is available in a range of thicknesses. When the wall is higher than 1.2 metres, a thicker board is recommended to protect the waterproof membrane from damage.
Made from expanded polystyrene (EPS), EXPOL ThermaSlab is a rigid foam board that retains its strength and shape for the lifetime of the building.
EXPOL ThermaSlab protects the waterproof membrane of retaining walls, ensuring its performance is not affected by moisture.
EXPOL ThermaSlab comes in easy to handle sheets in a range of sizes. Custom sizes are available on request.
In applications where insulation is required, use EXPOL-X for an excellent exterior insulation solution that is also waterproof. EXPOL StyroDrain is an alternative to retaining wall drainage material such as scoria or gravel.
EXPOL supplies a water-based glue to adhere polystyrene to most surfaces. NOTE - Glue isn't generally required for retaining walls.
HOW MUCH DO I NEED
CHOOSING THE RIGHT PRODUCT
EXPOL ThermaSlab comes in lengths of 2400mm, 2450mm, 2700mm, 3600mm and 4800mm. Custom sizes are available upon request.
CALCULATING HOW MUCH PRODUCT YOU NEED
Available in a full sheet, EXPOL ThermaSlab is fast and easy to install. A lightweight product, it is easy to move around the site.
Installing EXPOL ThermaSlab
EXPOL ThermaSlab 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 ThermaSlab hard up against the retaining wall, after the water proofing membrane or tanking has been applied. ThermaSlab should be held in place while the drainage material is added. EXPOL supplies a construction adhesive for this purpose.
EXPOL ThermaSlab should cover all waterproofing membrane and tanking. Ensure EXPOL ThermaSlab sheets are not exposed at the top of the wall.