EXPOL R1.8 BLACK UNDERFLOOR INSULATION

EXPOL R1.8 Black Underfloor Insulation is Expanded Polystyrene panel designed to fit between the joists under a timber floor. Infused with graphite it is 30% more efficient than EXPOL R1.4 and is designed to be used in extreme environments. It is ideal underfloor insulation for your personal or rental property.

It is ideal to use in personal houses or properties which are tenanted. The New Zealand’s Residential Tenancies Act requires landlords to ensure all tenanted properties have proper floor and ceiling insulation. EXPOL UnderFloor Insulation meets and exceeds the requirements of the Act.

For products designed to meet the updated H1 requirements of the Building Code please visit EXPOL New Generation R2.5 Underfloor or EXPOL New Generation R3.1 Underfloor.

EXPOL UnderFloor R1.8 Black is available in 4 convenient joist widths 360, 410, 470, 560 (mm). Quick and easy to install it is long-lasting insulation that creates a warm, dry home which is healthier to live in and costs less to heat.

EXPOL UnderFloor Insulation is available from participating hardware stores nationwide – find your local outlet here.

DO NOT STORE IN DIRECT SUNLIGHT!
Product could be damaged and warranty will be void.

It can be used on new and existing timber floors and fits snugly between timber floor joists to stop drafts and damp from entering.

EXPOL UnderFloor R1.8 Black Insulation is made of rigid polystyrene infused with graphite, so it won’t sag over time. It is also flame retardant, vermin resistant and helps reduce noise from timber floors.

EXPOL R1.8 Black can be easily recycled.

The benefits:

30% more efficient than EXPOL R1.4 White Insulation
Can be easily recycled
Flame retardant
Rigid
4 Joist measurements; 360, 410, 470 & 560mm
Easy to Install with concertina cuts which allow for compression of up to 20 mm
Resistant to moisture
No nutritional value to vermin, birds or animals
Four standard widths to fit between most standard joists
Ideal for both retro-fit applications and new floors
Comes with a 50 year product warranty

INSULATION STANDARD

All EXPOL timber floor insulation solutions comply with the Australian and New Zealand Standard AS/NZS 4859.1:2002.

MANUFACTURING STANDARD

All panels have a yellow stripe down one edge to confirm compliance with manufacturing standard AS 1366 Part 3 1992 for SL grade.

It is used as an insulation solution for:

Timber UnderFloor

UNDERFLOOR INSTALLATION GUIDE

CLICK HERE

CALCULATOR

Underfloor Pack

Area to be insulated

m² feet²

Number of Packs Required - choose width

Sheet Size

Technical Information

EXPOL UNDERFLOOR VIDEOS

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EXPOL UNDERFLOOR FAQs

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EXPOL Installation Components

EXPOL WireGuard

Where EXPOL R1.8 is exposed to electrical cables us EXPOL WireGuard a waxed paper strip to separate exposed electrical cables from the EXPOL R1.8 insulation. Expanded Polystyrene in some cases reacts with the plasticiser and degrades the elastic properties of some electrical cables over a prolonged period.

Fixings:

Existing Floors: EXPOL Z Clips are designed as a push fit between the panel and the joist.
New Floors: A 60mm Galvanized Nail should be used to support and secure the panel.

Styro-FIX Construction Adhesive

Styro–FIX is an advanced single component polyurethane-based construction adhesive.

This powerful adhesive is developed especially for the construction industry and will bond most types of construction materials including timber (damp and dry), concrete, plasterboard, polystyrene and many other porous and non-porous substrates.

It bonds expanded polystyrene to most surfaces, delivers strong adhesion and rapid cure, it is gun-able and non-drip.