Roof InsulationRoof

Roof insulation can reduce your homes heat loss by over 40%
insulation services

Why Choose Blown Roof Insulation?

Canterbury Insulation are the experts in ceiling insulation in Christchurch and beyond. We use an insulation product called Loft to completely fill the roof cavity, helping to keep the outside temperature out and the inside temperature in! Unlike other products, Loft fills up the entire roof space which means you don’t end up with the same gaps or spaces left by blankets or batts.

The total installed thermal roofing effectiveness of Loft is superior to batting or blanket, as it covers the full ceiling – without joints, gaps, thermal bridging or vented cavities commonly found between linings and batting or blankets. Batting or blanket materials need at least two layers to achieve the same installed thermal effectiveness of Loft.

High Thermal Performance

Loft insulation provides thermal resistance for steady temperature control. The installation method also reduces thermal bridging.


Loft Insulation is fast and easy to install. Unlike blankets or batts, it fills all gaps and voids in your ceiling.


Insulation is non-corrosive and will not react with electrical cabling or sustain vermin. It will not deteriorate, sag or settle over time


We're commited to the future which is why our Blow-in Glasswool insulation is made using recycled glass using sustainable manufacturing processes.

The Leaders in Ceiling Insulation Throughout Christchurch And Beyond

The ceiling insulation Christchurch locals rely on, Loft has many benefits! It is a formaldehyde-free, non-combustible, clean and durable. It is particularly effective for insulating tight roof cavities or insulating hard-to-reach attic spaces. Premium quality Loft forms a consistent white layer similar to cotton wool in accessible roof attics. Providing high thermal resistance for steady temperature control, installation is quick and easy, with long lasting effects. Whether your roof has old insulation that needs replacing or you don’t have ceiling insulation at all, don’t delay. Get in touch with the experts in ceiling insulation today.

Why Should You Invest In Ceiling Insulation?

Insulation is the most important thing you can do to improve the energy efficiency of your home. As an effective barrier against the summer heat and winter cold, you can expect to see reductions in your energy bills when you have adequate ceiling insulation. Our premium Loft blow-in insulation has a high R value, which measures its resistance to heat flow, known as thermal resistance. It can be installed in new home builds or easily retrofitted to existing homes. Our roof insulation solutions provide you and your home with:

  • Excellent thermal performance by filling all gaps and voids to create a complete barrier against heat loss or gain
  • Savings on energy costs and lowering your carbon footprint
  • Helping you to create a comfortable and healthy home with a warmer home in winter and cooler home in summer
  • Condensation control
  • Satisfaction that you are helping the environment because our product is made through sustainable manufacturing processes

Frequently Asked Questions

Is Loft Insulation safe?

Loft Roof Insulation is completely safe for the family. It’s made of glasswool insulation which is non-combustible and can act as a fire barrier. The fibre is inert and presents no health or safety risks to you or your family.

What if I already have some roof insulation installed?

It’s quite normal to find some insulation in most roof cavities however usually this poor quality and ineffective. In some situations, it also might have deteriorated over time. In special situations, we can remove old roof insulation but usually, it’s fine to blow Loft Insulation on top of whatever is already there. It’s best to have one of our assessors come and visit your property so they can advise on the best course of action.

What does R-Value mean?

We often get asked about R-values in Loft roof insulation. An R-value is simply a measure of the thermal resistance of an insulation product. The higher the number the better it will retain heat inside your house.

Loft Insulation has the highest R-value that’s obtainable in this type of product and is equivalent to the top batts and blown insulation products available in New Zealand.

How long does it take to install?

Most people are surprised how quickly Loft roof insulation can be installed. Officially it depends on the size and complexity of your home, but in most cases, the installation can be completed within 1 to 2 hours.

No need to leave the home and within a couple of hours your roof will be filled with insulation and you won’t believe the difference.

Jet Stream Max Roof Insulation

Contact Us Today For Your Ceiling Insulation in Christchurch

It doesn’t matter if your home is new or old, here at Canterbury Insulation, our team are experts in providing the best insulation solutions. By offering affordable and effective products and services, we have built a reputation as the leaders in ceiling insulation in Christchurch and beyond. To learn more about how we can help you create the most comfortable environment in your home, get in touch with our friendly, expert team.


Technical Resources and Brochures

Loft Insulation Technical Specifications

If you're after more technical information about Loft Insulation download this Technical Data Guide.

Loft Insulation Flyer

Learn more about Loft Insulation and why this is such a great insulation solution for your roof!

Hear from our clients

Don't just take our word for it - Here's what our clients are saying about us!

We have noticed the differnce, we don’t have a lot of heating in the house and have decided we won’t need anything serious now that we have been completely insulated. We will be referring you and your company to all we get the chance too.

Wall Insulation

I have just put CosyWall into my older wooden house which was always colder inside than outside in the winter. The heat pump had to work extra hard but still had to wrap up in a blanket to keep warm.

Guernersey Street
Wall Insulation

I would recommend CosyWall to everyone for a warmer, less draft and quieter better sleep and less worry about power bills that I couldn’t pay. The staff went out of there way to do a excellent job with no stress.

Wall Insulation

Since you have insulated our ceiling and underfloor we have noticed a huge difference in how warm our house is. Thank you to you and your team.

Ceiling and Underfloor Insulation

Thanks for the excellent service, Arron was very conscientious and hard working, he took the time to explain what he was doing a very professional job. He is a real asset to your company, thanks for a warmer house.

Wall and Ceiling Insulation

I just wanted to say thank you for a job well done, please pass my thanks onto your team, they couldn’t of been nicer or more focussed on the work at hand. They answered any questions that I asked and did a great job.

Wall, Ceiling and Underfloor Insulation

Thank you for a stellar job of insulating our walls of our house. Your guys were fast and professional and by the end of the day we noticed a massive difference in how warm our rooms were. Happy to recommend your services.

Wall Insulation

We are very happy with the job the guys did and can definitely feel a big difference, thanks again.

Wall Insulation

10% Price Beat Guarantee

Terms & Conditions

Eligibility Criteria:

  1. Our Price Beat Guarantee applies exclusively to mineral glass wool blown-in ceiling insulation and mineral glass wool blown-in wall insulation. It does not extend to other types of insulation, costs related to consent exemptions, travel, or accommodation.
  2. To be eligible for the Price Beat Guarantee, customers must provide a personalised quote from a competitor that includes:
  • The current advertised price.
  • The square meter area of insulation required.
  • The specified R-Value.
  1. The quote from the competitor must be valid and not have expired.
  2. The Price Beat will be calculated based on the competitor’s advertised price, inclusive of GST.

Additional Terms:

  • Canterbury Insulation reserves the right to modify, end, or revoke our Price Beat Guarantee at any time without prior notice.
  • The Price Beat Guarantee will not apply to competitor’s retail prices that are already discounted.

The team at Canterbury Insulation would love to discuss how we can make a real difference to your home.


The team at Canterbury Insulation would love to discuss how we can make a real difference to your home.