Insulation products

We explain your home insulation options.

Man installing insulation


R 1.5 Underfloor

Avg price


Member Reviews

    This insulation has an average R-value for a polystyrene product and is cheaper than average. It is suitable for under floors and can be DIY-installed.

    Good points

    • Meets requirement for underfloor insulation in rentals.
    • Cheaper than average for a polystyrene product.
    • Suitable for DIY installation.

    Bad points

    • Only available in Auckland, Wellington.

    About our prices

    Prices are per m² and inclusive of GST. They’re supplied by the manufacturer or distributor and indicative only. Installation costs may be additional.

    POA stands for “price on application”. Some manufacturers don’t supply estimates of price per m² for their products, so you may have to ask in-store. A few of these products can only be installed by specialists, so installation cost is tied up with product cost – these specialists should usually provide free quotes.


    • Avg price


    • Material


    • Product type



    • Suitable for ceilings

    • Suitable for walls

    • Suitable for under floor

    • DIY Install

    • R value


    • Thickness


    Manufacturer details

    More info

    • Availability

      Direct from Styrobeck (Auckland, Wellington only)