Underfloor Polystyrene Insulation

Floor insulation is a great way to reduce heat loss from your home. It also helps keep cold air out of your house in winter. Using a floor insulation product in your new build can save you up to 12% on your energy bill.

EXPOL underfloor polystyrene insulation is a rigid expanded polystyrene panel designed to fit between the joists under timber floors in normal urban homes. It meets the requirements of the New Zealand Residential Tenancy Act.

Easy to install

Whether you’re insulating a new build or retrofitting a home, underfloor polystyrene insulation is an easy and affordable option that can be installed as a DIY project. It’s also a lifelong investment that adds value to your home.

Rigid expanded polystyrene insulation boards fit easily between the joists in suspended timber floors, forming a barrier that prevents heat from passing through into the floor below and escaping outwards into the outside. This thermal barrier reduces drafts and saves energy.

The EPS70 insulation we supply is available in residential and commercial grades, with differing thermal values and compressive strengths. For concrete surface bed applications a high or extra-high density board must be used (please see our product listings for more information). All our EPS70 insulation is fire retardant, easy to install and complies with national codes of practice. We can provide detailed installation guides and recommend professional installers if required. Contact our national sales team for more information.

Easy to cut

Expanded polystyrene floor insulation is a cost effective way to insulate your home. The insulation panels fit snugly between the floor joists and provide a thermal barrier that prevents heat escaping from your home in winter and entering it in summer. The foam insulation panels are easy to cut and are available in a wide variety of thicknesses.

You can easily cut EPS with a utility knife. A sharp blade will ensure that you have a straight cutting line. A hot wire cutter is another option for cutting EPS. This tool uses a thermal wire to cut the insulation, which is the cleanest and quickest method for cutting EPS.

If you need to insulate a room with access underneath, underfloor polystyrene insulation is the best option. These rigid expanded polystyrene panels fit between the floor joists of a timber flooring and prevent airflow, heat loss and intrusion. The panels are also topped with steel mesh to preserve the insulating layer. They can also be used to meet residential tenancy requirements for insulated floors.

Easy to handle

EPS underfloor insulation is an excellent option for new homes, as well as existing buildings. It provides a thermal barrier and prevents the flow of air and heat between the ground and your home, reducing heating and cooling costs. Additionally, it is a great acoustic insulator and helps to dampen sound reverberation between timber floors.

NHS stocks a range of underfloor insulating products that are designed for installation in suspended timber floors. The insulated underfloor panels are made from Australian made expanded polystyrene (EPS). Designed to fit between floor joists, the EPS is light, easy to handle and fire resistant.

EPS is an excellent alternative to fiberglass batts, as it is much lighter and offers a higher R-Value per inch of thickness. In addition, it is moisture resistant and easily installed. It is recommended that EPS be secured with 25.4-mm (1-in.) head plastic cap nails or staples that are long enough to penetrate framing a minimum of 19 mm (0.75 in.).

Easy to transport

Floor insulation is a great way to make your home more comfortable and energy efficient. It will stop the heat from coming in during summer and escaping out in winter, and it will also prevent cold air from entering.

Rigid expanded polystyrene (EPS) insulation panels are a good option for insulating your floors in new or existing homes with subfloor access. They come in a range of different densities, with the most commonly used being EPS70 flooring grade polystyrene. It has a compression strength of about 70kPa.

Unlike bulk insulation rolls, EPS foam boards are rigid and don’t sag over time. This makes them a much easier product to install, and it will also save you money on installation costs. It is non-allergenic and contains no CFCs. It can also be used in new and existing residential and commercial buildings. It is also BRANZ appraised and is an ideal choice for New Zealand homes. It is especially suitable for tenancy properties, which are required to have adequate insulation under the floors by law.

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