Christchurch
Canterbury Insulation
Retrofit Insulation Specialists · Canterbury

Retrofit wall insulation for Christchurch homes

Insulate existing walls from inside or outside the house with CosyWall blown fibre insulation. Ideal for many pre-1991 weatherboard, brick veneer, bungalow and villa homes across Christchurch and Canterbury.

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The Canterbury Insulation number

Twenty years insulating Canterbury,four thousand warmer homes.

01 / 03
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Years Insulating Canterbury
Insulating Christchurch homes since the early 2000s.
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Tonnes installed
Over 8000 tonnes of insulation blown into Kiwi homes.
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Homes insulated
Across Christchurch, Canterbury and the wider South Island.
RECENT JOBS, STRAIGHT FROM THE CREW
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Our Services
Wall Insulation
01 / 04
35%
up to

Wall Insulation

Reduce your home's heat loss by up to 35%. Wall insulation is one of the single most effective upgrades you can make, and we make it easy.

  • CosyWall blown-in system
  • Zero mess, zero damage
  • Same-day install on most homes
Get a quoteLearn more
Roof Insulation
02 / 04
42%
up to

Roof Insulation

The single biggest opportunity in most homes. Up to 42% of heat leaves through an under-insulated ceiling. We fix that in a morning.

  • Loft blown-in fibre or cut and fit insulation
  • R3.6 to R7 rated
  • Tops up existing insulation
Get a quoteLearn more
Floor Insulation
03 / 04
12%
up to

Floor Insulation

Cold floors making your home uncomfortable? Floor insulation improves thermal performance and helps cut your heating costs.

  • Under-floor wool and polyester
  • Warmer floors, quieter rooms
  • Healthy-homes compliant
Get a quoteLearn more
Acoustic Insulation
04 / 04
−10dB
up to

Acoustic Insulation

Noise travelling through your walls? Acoustic insulation reduces sound transfer between rooms for a quieter, more peaceful home.

  • Internal wall treatment
  • Home-theatre and shared-wall options
  • Fast retrofit, minimal disruption
Get a quoteLearn more
Scene 01 · Wall Insulation000%
Estimate · 60 seconds

Get a number,
not a guess.

Tell us about your home, pick what to insulate, and we'll show you a real ballpark. Bundle two surfaces and the price drops automatically.

01 / 02Your Home
3-bed standalone, built 1960-1990, single storey
m²
Price Beat Guarantee

Found a better price?
We'll beat it by 10%.

If you find a lower price on the same blown ceiling or wall insulation product, we'll beat it by 10%. That's our promise to Canterbury homeowners.

Get a quote
50-YEAR PRODUCT WARRANTY10 YEAR WORKMANSHIP WARRANTYCHRISTCHURCH OWNED AND OPERATEDFREE ON-SITE QUOTEHEALTHY HOMES COMPLIANTBLOWN-IN · NO MESS · NO DAMAGE50-YEAR PRODUCT WARRANTY10 YEAR WORKMANSHIP WARRANTYCHRISTCHURCH OWNED AND OPERATEDFREE ON-SITE QUOTEHEALTHY HOMES COMPLIANTBLOWN-IN · NO MESS · NO DAMAGE50-YEAR PRODUCT WARRANTY10 YEAR WORKMANSHIP WARRANTYCHRISTCHURCH OWNED AND OPERATEDFREE ON-SITE QUOTEHEALTHY HOMES COMPLIANTBLOWN-IN · NO MESS · NO DAMAGE50-YEAR PRODUCT WARRANTY10 YEAR WORKMANSHIP WARRANTYCHRISTCHURCH OWNED AND OPERATEDFREE ON-SITE QUOTEHEALTHY HOMES COMPLIANTBLOWN-IN · NO MESS · NO DAMAGE
On site, Halswell
Real crews. Real houses. No showroom, no subcontractors. Just the team that'll actually be on your roof.
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How it works

Quote on Monday,
warm by Friday.

A retrofit with us is a one-day job, not a renovation. Here's every step. No surprises, no chaser calls.

01

Free on-site quote

We come to you, inspect your roof cavity, walls and floors, and give you a straight number. No pressure, no follow-up spam.

02

We build a spec

Tailored to your home's age, framing, existing insulation and the problem rooms you actually want fixed.

03

Install in a day

Our full-time crew lands first thing and retrofits your insulation cleanly. Most homes done in 4 to 6 hours.

04

Warm home forever

50-year product warranty. Power bills drop the first winter. Healthier home from week one.

Reviews from Christchurch01 / 04
“Since getting CosyWall installed, our home is noticeably warmer. The heat pump doesn't have to work nearly as hard anymore. We're already seeing the difference in our power bills.”
S
Sarah
CASHMERE, CHRISTCHURCH
“I'd recommend Canterbury Insulation to everyone. Less drafts, quieter rooms, better sleep, and less worry about power bills. The team were friendly and professional.”
M
Mark
WOOLSTON
“We had our ceiling and walls done in the same week. The crew were tidy, efficient, and the difference was immediate. Best home upgrade we've made.”
R
Rachel & Dave
HALSWELL
“Straight answer, sharp price, and the house feels different already. Couldn't ask for more.”
T
Tim
NEW BRIGHTON
Ready to get started

Let's get
your place
warm.

Request a free, no-obligation quote. We'll visit your home, measure up, and give you a straight answer on what insulation you need and what it'll cost.

Mon to Fri
08:00 to 17:00
Avg. quote time
48 hours