Choosing between the best insulation installers in Dunedin is mostly a question of what your house needs: a ceiling top-up, an underfloor blanket and moisture barrier, or blown wall insulation in an older villa that was built without any. The companies below assess Dunedin homes, supply the batts or blanket, install to the New Zealand Standard and, where a household qualifies, handle the Warmer Kiwi Homes paperwork as well. Salmac and Absolute Energy both work from their own Dunedin premises, and every firm here starts with a free home assessment.
1Salmac
Salmac is a family owned insulation and asbestos removal business working out of Kaikorai Valley Road in Bradford, with a Dunedin history that runs back to 1922. The residential side supplies and installs ceiling and underfloor insulation across the city and the wider Otago region, from Mosgiel and Port Chalmers out to Oamaru, Queenstown and Wanaka. It suits homeowners and landlords who would rather have the assessment, the product choice and the installation handled by one long established local firm.
Services
- Ceiling insulation in Pink Batts, Bradford Gold or Mammoth polyester
- Underfloor insulation using Mammoth polyester blanket and self-supporting sections
- Ground moisture barriers for damp or enclosed subfloors
- Insulation removal
- Commercial and industrial insulation
Highlights
- Family owned and operated from Dunedin, trading since 1922
- Deloitte Fast 50 regional award, 2017, for the fastest growing retail or consumer products business in Dunedin and the lower South Island
- Forman 100 Year Recognition Award, 2013
- Installation team trained to install in accordance with New Zealand Standard NZS 4246:2016
- Free assessment for rental properties against the ceiling and underfloor insulation requirements
Location & Contact
Name: Salmac
Address: 333 Kaikorai Valley Road, Bradford, Dunedin 9011
Phone: 03 453 5111
Website: salmac.nz
2Absolute Energy
Absolute Energy runs its Otago branch and showroom from King Edward Street in Dunedin, with an assessment and installation team covering the city and the surrounding region. The company insulates existing homes, new builds, rental properties and commercial buildings, and works across ceilings, walls and floors rather than a single application. As an Energy Efficiency and Conservation Authority service provider it can also check whether a household qualifies for a Warmer Kiwi Homes grant.
Services
- Ceiling insulation for existing homes
- Underfloor insulation
- Wall insulation, including blown wall insulation
- Insulation removal
- New build and commercial insulation
Highlights
- Otago showroom on King Edward Street that customers can call into face to face
- EECA service provider, able to assist with Warmer Kiwi Homes grant applications
- Insulation installed in more than 25,000 homes and commercial buildings nationally
- Managing director Paul Brockie is an executive committee member of the Insulation Association of New Zealand
Location & Contact
Name: Absolute Energy
Address: 331A King Edward Street, Dunedin
Phone: 03 425 7700
Website: absoluteenergy.co.nz
3Insulmax Otago and South Canterbury
The Insulmax Otago and South Canterbury branch concentrates on retrofit wall insulation, blowing mineral fibre into the wall cavities of existing houses through a hole smaller than a ten cent coin so linings and cladding stay where they are. Conan Mitchell has led the branch since 2015, and the team covers Dunedin, Balclutha, Alexandra and Cromwell. It is the option to look at for an older weatherboard, brick or roughcast home that was built with no wall insulation at all.
Services
- Retrofit wall insulation for weatherboard homes
- Retrofit wall insulation for brick and block homes
- Retrofit wall insulation for roughcast, stucco and rendered homes
- Wall insulation installed through interior plasterboard linings
- Blown ceiling insulation for accessible ceilings and skillion roofs
Highlights
- CodeMark certified system, compliant with the New Zealand Building Code
- 50 year install warranty on the European blown mineral fibre
- Installation usually completed in a single day
- No renovation needed, as the insulation goes in through a hole smaller than a ten cent coin
- Branch led by Conan Mitchell since 2015, with a free home assessment before quoting
Location & Contact
Name: Insulmax Otago and South Canterbury
Address: Dunedin
Phone: 03 487 8606
Website: insulmax.co.nz
4Premier Insulation Otago
Premier Insulation Otago, trading as Insulate Me South Limited, works from Gladstone Road South in Mosgiel and installs insulation for homes and businesses throughout Otago. The branch covers ceiling, underfloor, wall and mid floor applications, taking on both retrofit work in older Dunedin houses and new builds specified to the New Zealand Building Code. Retrofit jobs begin with a free, no obligation home assessment, and the team manages Warmer Kiwi Homes applications for households that qualify.
Services
- Retrofit ceiling and underfloor insulation for existing homes
- Wall and mid floor insulation
- New build, renovation and multi dwelling insulation
- Warmer Kiwi Homes and Healthy Homes assessments for owners and landlords
Highlights
- Locally owned and operated Otago branch, run day to day from its Mosgiel base
- Premier 100% polyester insulation made in New Zealand from a minimum 45% recycled fibre, BRANZ appraised and safe to handle with bare hands
- 50 year product warranty on installed insulation
Location & Contact
Name: Premier Insulation Otago
Address: 27a Gladstone Road South, Mosgiel 9024
Phone: 0800 467 855
Website: premierinsulation.co.nz
5Brightr Otago
Brightr’s Otago branch operates from Dukes Road North in Mosgiel and retrofits ceiling and underfloor insulation in existing homes around Dunedin and the wider region, alongside heat pump installation and new build work. Every job starts with a free home assessment, and the branch is a Warmer Kiwi Homes provider, so eligible owner-occupiers can have a share of the cost subsidised. It suits a household that would rather get insulation and heating sorted through one supplier.
Services
- Ceiling insulation retrofits
- Underfloor insulation retrofits
- Ground moisture barriers
- Wall insulation
- Heat pump and air conditioning installation
Highlights
- More than 15 years working in the Otago region
- Warmer Kiwi Homes provider, able to check eligibility and handle the subsidy process
- Installs meet the Healthy Homes standards and New Zealand building standards
- New build work specified to exceed the H1 energy efficiency standards
Location & Contact
Name: Brightr Otago
Address: 163 Dukes Road North, Mosgiel, Dunedin 9092
Phone: 0800 888 766
Website: brightr.co.nz
Insulation Installers in Dunedin at a Glance
| Business | Based in | Highlight |
|---|---|---|
| Salmac | Bradford | Family owned and operated from Dunedin, trading since 1922 |
| Absolute Energy | Dunedin | Otago showroom on King Edward Street that customers can call into fac... |
| Insulmax Otago and South Canterbury | Dunedin | CodeMark certified system, compliant with the New Zealand Building Code |
| Premier Insulation Otago | Mosgiel | Locally owned and operated Otago branch |
| Brightr Otago | Mosgiel | More than 15 years working in the Otago region |
How to Choose the Right Insulation Installer in Dunedin
- Match the installer to the job. Ceiling and underfloor retrofits are widely offered, but blown wall insulation in an existing weatherboard or roughcast house is a specialist service, so check the company actually does that work before booking an assessment.
- Ask which R-value is being quoted. For the South Island climate zone the recommended minimum for an uninsulated ceiling is higher than for the North Island, so compare quotes on R-value and coverage, not just the total price.
- Check the product as well as the price. Polyester, glass wool and blown mineral fibre behave differently in a damp Dunedin subfloor, and product warranties range from 20 years to 50.
- Confirm the installer works to NZS 4246:2016, the standard for installing insulation in residential buildings, and ask how they handle downlights, flues and extractor fans in the ceiling space.
- If you own a rental, or think you might qualify for a grant, choose a company that assesses against the Healthy Homes standards and processes Warmer Kiwi Homes applications, so the compliance side is handled with the install.
Frequently Asked Questions About Dunedin Insulation Installers
What does home insulation cost in Dunedin?
None of the companies on this page publish fixed prices, because the cost depends on floor area, ceiling access, the R-value specified and whether existing material has to be removed first. Every one of them offers a free, no obligation home assessment and a written quote, so the practical approach is to get two or three assessments and compare them on product, R-value and coverage rather than on the headline figure alone.
Can I get a government grant towards insulation?
Warmer Kiwi Homes offers grants towards ceiling and underfloor insulation for eligible owner-occupiers of older homes, with the level of support depending on your circumstances. Several of the installers here are approved providers and will check your eligibility and lodge the application as part of the job. You can also check for yourself on the EECA Warmer Kiwi Homes eligibility page before you call anyone.
Which parts of Dunedin do these installers cover?
All of them work across the whole city and out into the wider region. If you are in the south of the city, around St Kilda, Caversham or Green Island, the King Edward Street branch is the closest walk-in option. If you are in Mosgiel, Outram or the Taieri, two of the teams here are based on Dukes Road North and Gladstone Road South in Mosgiel. Kaikorai Valley Road in Bradford is central for the northern and hill suburbs, and the same firms travel out to Port Chalmers, Waikouaiti and Balclutha.
Is ceiling or underfloor insulation the better place to start?
The ceiling is normally the first priority, because that is where the largest share of heat escapes from an uninsulated house. Underfloor insulation and a ground moisture barrier come next, and in a Dunedin villa with a damp crawl space the moisture barrier often makes as much difference to how the house feels as the insulation itself. Most installers will quote both together, which usually costs less than booking two separate visits.
Can walls be insulated without stripping the linings?
Yes. Retrofit wall insulation is blown into the existing cavity through small holes in the cladding or the interior plasterboard, which are then made good, so there is no need to remove weatherboards or replace linings. It is the usual answer for pre-1978 Dunedin homes, which were generally built with no wall insulation, and the work is normally finished in a day.
What insulation do I need for a rental property?
Ceiling and underfloor insulation is compulsory in rental homes where it is reasonably practicable to install, and a ground moisture barrier is required where the subfloor is enclosed. Several of these companies assess rentals against the standard and issue the documentation landlords need. The current requirements are set out on the Tenancy Services healthy homes pages.
How long does an installation take?
A straightforward ceiling and underfloor retrofit on a standard Dunedin house is usually a one day job, and retrofit wall insulation is normally completed in a day as well. New builds are scheduled around the build programme, so the insulation goes in once the framing and wiring are signed off and before the linings go on.
Should I remove old insulation before topping up?
It depends on what is up there. Old material that has slumped, been damaged by rodents or contains foil under the floor generally has to come out, and most of these installers offer insulation removal as a separate service. Repairing or retrofitting foil insulation under floors has been banned since 2016, so damaged foil is replaced with bulk insulation rather than patched.
How We Chose the Best Insulation Installers in Dunedin
Every business in this guide was found by searching for insulation installers in Dunedin, then checked against its own website. Names, addresses and phone numbers are taken from the business’s own site rather than a directory feed, so what you see here is what they publish themselves. We also check that each one is actually based in or genuinely serving Dunedin, rather than a national operator running a local landing page. A business with no website of its own is not listed, because there is no primary source to verify it against.