View our short video highlighting the main products used for insulating a concrete floor.
Choose your thickness
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.
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.
EXPOL Pod Stick
Used as an alternative to Mesh / Bar Chairs. Provides more support for steel mesh over polystyrene.
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
EXPOL makes insulating easy. To ensure you get the best result, follow these simple steps.
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.
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.