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 EXPOL R1.4 and R1.8 meet and exceed the new Residential Tenancies Act requirements.

Trusted by Kiwis for more than 20 years, EXPOL Underfloor Insulation is easy-to-install and is available in 4 convenient joist widths 560, 470, 410, 360 (mm). It is the DIY solution that will keep your home warm, dry and healthy.

Suitable for use in both new and existing homes, EXPOL Underfloor Insulation comes with a 50 year product warranty and requires no maintenance.

Learn more about:

                                    - Expol UnderFloor Insulation

                                   -  Expol UnderFloor White R1.4 

                                    - Expol Underfloor Black R1.8

                                   -  EXPOL Pack Calculator 

                                   -  Find your nearest stockist 


The No Scoria Drainage Solution

EXPOL QuickDrain is an engineered drainage solution that provides a scoria-free alternative to traditional scoria drainage solutions, cutting installation time in half. It incorporates a recycled polystyrene aggregate that provides enhanced drainage performance, strength, filtration and longevity.

EXPOL QuickDrain is a faster and easier install than traditional drainage solutions.

EXPOL QuickDrain is designed to be used in residential and light commercial non-traffic drainage applications. It is used for the economic removal of excess ground water in residential and commercial areas. It is ideal to be used in retaining walls, water logged areas, perimeter drainage around buildings, houses and sections. It is effective to use for effluent soakage fields and stormwater diversion.

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From the foundations right up to the roof, EXPOL has the right solution to keep every part of your home warm, dry and healthy.

We offer insulation products to suit timber and concrete floors, retaining and masonry walls, cladding and interior walls, pod flloors, foundations and skillion roofs.


Trusted by Kiwis for more than 30 years, EXPOL is the largest manufacturer and distributor of expanded polystyrene (EPS) products in New Zealand.

Our high performance EPS home insulation solutions offer excellent protection from cold and moisture, even in extreme temperatures.

EXPOL EPS products are 100% recyclable, BRANZ appraised. EXPOL Premium UnderFloor R1.4 White and R1.8 Black carry a 50 year  product warranty. They can be purchased from Mitre 10 and Mitre 10 Mega, Carters, PlaceMakers, Bunnings and ITM. 

Learn more about us.



Expol Garage Door Insulation


Don’t leave your garage out in the cold. EXPOL’s DIY Garage Door Insulation Kit is a quick and easy way to insulate sectional garage doors and eliminate draughts and moisture.

Learn more about EXPOL Garage Door Insulation or find your nearest stockist.

Enquiry Form

General Enquiry

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73


105 Captain Springs Rd., Onehunga, Auckland

Tel: +64 (9) 634 3449

Free Phone: 0800 86 33 73


105 Captain Springs Rd., Onehunga, Auckland

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