Expol under-floor insulation
Expol underfloor insulation is a polystyrene insulation board specifically designed to insulate between the timber floor joists of homes and buildings.
Easy to install
Expol is easy to DIY, even in a confined space. Each board is 1.2 meters long and has concertina cut edges that simply hold the board in place without any need to drill or screw into the studs. Expol comes in 4 standard widths to fit easily between most joist spans, but can be cut down to fit irregular spans and shapes.
High R-values
One sheet of Expol has an R value of R1.4, well above the minimum recommended R-value for timber floor insulation. Insulation is vital in maintaining energy efficiency, and an uninsulated floor allows heat to easily escape from your home. An R-value of 2.8 can be easily achieved by simply installing two sheets instead of one. This is especially useful in areas with extreme cold, such as alpine and high snow areas.
Eliminate draughts
Expol’s concertina-cut sides push against the wooden joists, holding itself in place and eliminating draughts by sealing up the floor.
New or old homes
Expol can be installed in new homes to meet insulation requirements or existing homes to improve comfort and energy efficiency.
50-year guarantee
This product has a 50-year guarantee, providing you and your family with quality insulation for years to come.
» Learn more on the Austech External Building Products website
Sustainability attributes
(learn more)Documents
- Austech Expol brochure (778.2KB)
- Austech Expol insulation FAQ and installation manual (238.4KB)
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Find related products
Insulation, Under-floor, Cavity, Building, Styrofoam, Boards, Polystyrene, Foam, Industrial
Locally made, Recyclable, Production waste is recyclable, Designed for disassembly, Packaging is reduced, Low embodied energy, Low embodied water, Reduces heating or cooling load, Reduces energy consumption, Emits low VOCs
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Austech External Building Products
Austech External Building Products caters to the needs of architects, engineers, builders and DIY enthusiasts with a wide range of high-quality and innovative products. Austech specializes in extruded polystyrene, vin... More...
Head office
Austech External Building Products
80 Tattersall Road
Blacktown, NSW, 2148
Tel: 02 9831 1623
Tel: sales@austech.com.au
Fax: 02 9831 5043
QLD
Austech External Building Products
1/1089 Kingsford Smith Drive
Eagle Farm, QLD, 4009
Tel: 07 3268 3066
Tel: sales@austech-qld.com.au
Fax: 07 3268 3021
Tas
Austech External Building Products
4/8 Melrose Court
Sandy Bay, Tas, 7005
Tel: 03 6225 4003
Tel: sales-tas@austech.com.au
Fax: 03 6225 4003
Vic
Austech External Building Products
36 Isabella Street
Moorabbin, Vic, 3189
Tel: 03 9532 0131
Tel: sales-vic@austech.com.au
Fax: 03 9532 1868
WA
Austech External Building Products
20 Hilltop Close
Mahogany Creek, WA, 6072
Tel: 08 9295 0500
Tel: sales-wa@austech.com.au
Fax: 08 9295 6699
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