External Wall Insulation

Why Buy Wall Insulation?

Save up to 15% on heating and cooling energy
Reduce your greenhouse gas emissions
Rely less on heating and cooling systems
Stabilise year-round indoor temperature

Quick Install Tips

Avoid leaving gaps in insulation
Fill small cavities with leftovers
Don’t compress the insulation
Insulation shouldn’t lean on bricks
Strap or string where needed
Use a sharp bladed knife

Quick Delivery

Pricewise Insulation are the wall insulation specialists. We deliver to building sites and homes right across New Zealand within 2-4 business days. For urgent deliveries please give our team a call on 0800 697 742.

Product photo of Knauf Earthwool Glasswool Wall Insulation Batts

Knauf Earthwool Glasswool Wall Insulation Batts

Out of stock

Earthwool Glasswool Insulation

580mm | Knauf Earthwool Wall Insulation Segments

$ 6.60 – $ 21.36 p/m2 inc. GST

Out of stock

Acoustic Wall Insulation

430mm | Knauf Earthwool® Glasswool Thermal and Acoustic Wall Insulation

$ 12.02 – $ 18.38 p/m2 inc. GST

Out of stock

Acoustic Wall Insulation

580mm | Knauf Earthwool Acoustic Wall Insulation

$ 12.10 – $ 18.50 p/m2 inc. GST

Product photo of Autex Greenstuf Polyester Wall Insulation Pads

Autex GreenStuf Polyester Insulation

360mm | Autex GreenStuf® Polyester Wall Insulation Pads

$ 16.17 – $ 32.93 p/m2 inc. GST

Autex GreenStuf Polyester Insulation

560mm | Autex GreenStuf® Polyester Wall Insulation Pads

$ 16.17 – $ 33.38 p/m2 inc. GST

Buy Autex Greenstuf Polyester Underfloor Insulation Rolls

Autex GreenStuf Polyester Insulation

580mm | Autex GreenStuf® Polyester Masonry Wall Blanket

$ 9.00 – $ 29.94 p/m2 inc. GST

Autex GreenStuf Polyester Insulation

590mm | Autex GreenStuf® Polyester Masonry Wall Blanket

$ 6.40 p/m2 inc. GST

Pink Batts Insulation installed between wooden joists. Buy cheap insulation online.

Out of stock

External Wall Insulation

Pink® Batts® Thermal Wall Insulation

$ 9.48 – $ 13.85 p/m2 inc. GST

Product photo of Bradford Acoustic Gold Batts - Wall Insulation

Bradford Gold Acoustic Ceiling Insulation Batts

Out of stock

Acoustic Wall Insulation

Bradford Acoustic Gold Wall Insulation

$ 11.25 – $ 12.83 p/m2 inc. GST

Product photo of Bradford Gold Glasswool Insulation Batts

Out of stock

Bradford Gold Insulation

Bradford™ Gold Wall Insulation Segments

$ 6.14 – $ 22.09 p/m2 inc. GST

Thermal Wall Insulation

Wall insulation acts as a barrier to heat flow and is needed to keep your home cool in summer and warm in winter. Properly installed insulation can reduce greenhouse gas emissions and heating bills by up to half, as well as improve the overall comfort of your home.

Key tips for installing wall insulation

The main thing to keep in mind when considering installing wall insulation, is that once the walls are lined, the job is done, and you won’t be in a hurry to dismantle the wall to redo the wall insulation. So it’s imperative to ensure that

The correct R-value is installed the first time
The insulation is installed with a neat finish, with minimum air-gaps.

Consider upgrading your wall insulation to at least one ‘R-value’ higher than the minimal mandatory specifications on your report. The required total R-value for the building fabric of your home will vary depending on your climate zone.

Upgrading from R2.2 to R4.1 external wall insulation

Upgrading to an R4.1 wall insulation batt will improve both the thermal and acoustic performance of your home. These batts are rigid and fit snugly between the wooden joists to achieve an optimal thermal finish. R2.6HD Knauf Earthwool is a high density product with higher acoustic ratings than your typical R2.2 or R2.4 wall batts.

Which insulation brand is best?

Earthwool vs Pink Batts vs Bradford Gold

In the end the most important consideration is what R-value to use, not the brand. Pink Batts, Knauf Earthwool, GreenStuf and Bradford Gold are all good quality brands, each with their own benefits.

The main thing to know is that products with the same R-value all have the same thermal performance if installed as specified. An R2.0 Pink Batt will provide the same thermal resistance as an R2.0 Autex GreenStuf Pad or an R2.0 Bradford Gold Segment.