There are a variety of different products on the market. We pride ourselves on selling products that are not only good quality and reasonably priced but products that actually work to make a difference in your home.

There are three different types of underfloor insulation. Foil types (work on reflection), fibre types and polystyrene types (these two work on the principle of mass, that is trapped air). The different products bring different qualities to your home.

Foil Types

Foil insulation works as a convectional and radiant barrier. It has been difficult to get the best performance out of traditional foils due to building construction methods and strength of products, however newer more advanced types on the market offer some fantastic performance features. The primary advantage of foil is that it acts as a complete vapour barrier stopping rising dampness coming into the home and they are also great for working in tighter areas. Foils are installed in blanket format making them quick and easy to install but there is risk of electrocution in using them so please read and watch the installation instructions carefully.

We stock:

• Silverzone
• This is a high-tech, high performance foil product in a 1200mm wide sheet. It has two layers of aluminium separated by a layer of trapped air pockets and reinforced with scrim. It is especially good for retrofitting into older homes and is a very popular DIY product. Performance in underfloor applications R2.3
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• Aircell
• Aircell is a premium reflective foil insulation designed for tough environments. It is in a 1350mm wide roll with two layers of aluminium separated by a layer or trapped air pockets and reinforced with a woven plastic inner. Performance in underfloor applications R2.29
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• Thermabar 811
• It is a Double sided reinforced perforated reflective aluminium foil insulation. This is a very common building foil designed to comply with NZ standards with a budget in mind. R1.1
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• Thermabar 732
• This is a double sided three way reinforced perforated reflective aluminium foil insulation. It is stronger than the 811and meets NZ minimum requirements. R1.1
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Fibre types

Fibre forms of insulation work in much the same way as a jersey you wear. Generally the thicker the product the better in works. The most popular form of fibre underfloor insulation is polyester. The key advantage of fibre types of insulation is that they allow the floor to ‘breathe’ while still offering excellent thermal qualities. Precut products are available for fitting between your joists or alternatively blanket format is also available for attaching underneath the joists. They are not particulary suitable for high wind zones or where you have a rising dampness issue but they do offer very good performance and very long life.

We stock:

• Cocoon
• This is a high grade polyester underfloor insulation available in a 1200 wide roll form for retrofitting under floor joists or in pre-cut widths to be fitted between joists. It is designed to well exceed NZ minimum standards. It is a very popular DIY product. System performance R2.1 – R2.6
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• Greenstuf
• This is a good quality polyester underfloor insulation available in two set widths for fitting between floor joists. It is designed to meet NZ minimum standards. R1.3
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Polystyrene

Polystyrene Underfloor insulation is a well known product on the market. It works in your home just like it does as a coffee cup or chilly bin. There are different forms of polystrene products available on the market, each with a small differences. We prefer Retrotherm as it is the more simple and effective products to install. Polystyrene is great for dampening sound reverberation in wooden floor boards and also acts as a partial vapour barrier. Available in wide variety of widths (360mm, 410mm, 440mm, 470mm and 560mm) it is always installed between your joists and each piece is cut to size and friction fit up in place.

We stock:

• Chillguard
• This is an excellent quality polystyrene underfloor insulation with a concertinaed edge for friction fitting between floor joists. It sits hard against floor boards and is available in three set widths. R1.5 (please note we have changed to supplying the chillguard brand at an awesome price so the pic will change shortly.
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