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Underfloor Insulation: The Smart Option

Our Enviro Blanket® Underfloor is 100% polyester blanket underfloor insulation designed for flexibility. It’s perfect for use between variable joist spacing, which is common in older New Zealand homes.


Better than polystyrene insulation.

With Harrisons’ own exclusive Enviro Blanket®, there’s no need for cutting or trimming to fit. That means no mess and a greatly reduced installation time.

Our underfloor insulation is simply stapled into place between the joists without the need for clips or tape, it will significantly reduce heat loss and drafts caused by joins in the floor. You’ll have warmer feet and a warmer home!

Underfloor insulation for warm feet and lower energy bills

Enviro Blanket® Underfloor is 100% polyester blanket insulation designed for easy installation. It’s backed by a 70-year product warranty and 10-year installation guarantee (Terms and conditions apply)

Logos for Enviro Blanket Ceiling, Underfloor, Lifetime Warranty and 10 Year Installation Guarantee

Before and after comparison photo

Insulate your home today

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Call us now and our friendly team will make a booking for a safe on-site measure and quote or virtual consultation at a time that suits you and we can also give you a proposal on the spot.

0800 00 33 54

Mon - Fri: 8:00am - 6:00pm
Sat: 8.30am - 4:00pm
Sun: 10.00am to 4.00pm

Closed Public Holidays / Our call centre is based in New Zealand

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