Finding the best home insulation in Wellington usually comes down to two questions: can an installer actually get into your ceiling cavity and under your floor, and what can be done about walls that were built before insulation was required. Home insulation in Wellington covers ceiling and underfloor retrofits, ground moisture barriers, blown wall systems and the compliance work landlords need for a rental. Total House and Wellington Moisture Barriers and Insulation are among the specialists covered below.
1Total House
Total House has run its Wellington insulation business from Maidstone in Upper Hutt since 2009, working on existing houses, new builds and commercial buildings. The team installs ceiling, underfloor and wall insulation along with ground moisture barriers, and covers central Wellington, Lower Hutt, Upper Hutt, Porirua, Kapiti and the Wairarapa. It suits homeowners after a full retrofit and landlords who want a property assessed before deciding what work is needed.
Services
- Ceiling insulation for existing homes
- Underfloor insulation
- Wall insulation, installed during renovation once the linings are off
- Ground moisture barrier installation
- Healthy Homes Standards assessment for rental properties
Highlights
- Wellington operation established in 2009, with a yard at 18 Goodshed Road in Maidstone
- Healthy Homes Standards inspection priced at $189, with a written report on what is and is not compliant
- Does not use blown in foam or spray insulation, so wall work is scheduled around renovations rather than done through the cladding
- Named Wellington contacts for new builds, residential retrofits and project coordination
Location & Contact
Name: Total House
Address: 18 Goodshed Road, Maidstone, Upper Hutt
Phone: 021 372 033
Website: totalhouse.co.nz/wellington-insulation/
2Wellington Moisture Barriers and Insulation
Wellington Moisture Barriers and Insulation works from Island Bay and specialises in ground vapour barriers and retrofitted underfloor and ceiling insulation. A large part of the work is for landlords and property managers bringing rental properties up to the Healthy Homes Standards, including advice on where an exemption applies. The company also removes and disposes of old ceiling insulation that has stopped performing before installing a replacement.
Services
- Ground moisture barrier installation
- Underfloor insulation retrofits
- Ceiling insulation installation, replacement and retrofitting
- Removal and disposal of old insulation as part of an upgrade
Highlights
- Barriers made from 250 micron black polythene that complies with the relevant New Zealand Standard
- Every installation audited by a registered building inspector
- Advice on Healthy Homes exemptions, with an exemption certificate provided where one applies
- Free, no obligation quotes
- Island Bay base, so work across the southern and central suburbs does not carry a travel premium
Location & Contact
Name: Wellington Moisture Barriers and Insulation
Address: 9 Maybury Way, Island Bay, Wellington
Phone: 021 657 387
Website: moisturebarrier.co.nz
3Insulmax Wellington
Insulmax Wellington installs retrofit wall and ceiling insulation in existing homes without removing linings or cladding, blowing mineral fibre into the cavity through small holes. The branch is led by Reddyn Wallace and covers Ōtaki, Kapiti, Porirua, Upper Hutt, Lower Hutt, Wellington City and through to the Wairarapa. It suits owners of older weatherboard, brick, roughcast and plaster homes where the walls were never insulated.
Services
- Retrofit wall insulation for weatherboard homes
- Wall insulation for brick and block homes
- Wall insulation for roughcast, stucco and rendered claddings
- Wall insulation installed through interior plasterboard linings
- Blown ceiling insulation for accessible ceilings and skillion roofs
Highlights
- CodeMark certification for the retrofit wall insulation system, giving compliance with the New Zealand Building Code
- Installed through a hole smaller than a ten cent coin, leaving the exterior cladding weathertight
- Most installations completed in a single day
- 50 year install warranty on the blown mineral fibre
- Recyclable European mineral fibre, suitable for weatherboard, brick, roughcast, fibre cement and interior linings
Location & Contact
Name: Insulmax Wellington
Address: Wellington
Phone: 04 242 0770
Website: insulmax.co.nz/contact/wellington
4Brightr Wellington
Brightr Wellington operates from Trentham in Upper Hutt, retrofitting ceiling and underfloor insulation in existing houses and insulating new builds to the H1 energy efficiency requirements of the Building Code. The branch is a registered Warmer Kiwi Homes provider, so eligibility for the grant is checked as part of the assessment. Heat pumps and air conditioning are installed by the same team, which suits homeowners who would rather deal with one contractor for heating and insulation together.
Services
- Ceiling insulation retrofits
- Underfloor insulation retrofits
- Ground moisture barrier installation
- Wall insulation
- New build insulation to H1 standards
Highlights
- Registered Warmer Kiwi Homes provider, with free in home assessments
- Mammoth polyester and Pink Batts product ranges
- Q Card interest free finance available
Location & Contact
Name: Brightr Wellington
Address: 3A Du Pont Lane, Trentham, Upper Hutt
Phone: 0800 888 766
Website: brightr.co.nz/wellington
5EnergySmart Wellington
The EnergySmart Wellington branch works out of Seaview in Lower Hutt, supplying and installing insulation for ceilings, walls and underfloors along with ground moisture barriers. Insulation sits alongside heat pumps and ventilation, so a single in home assessment can cover heating and insulation together. The branch services the wider region, from Ōtaki through to Martinborough and Eketahuna.
Services
- Ceiling insulation
- Underfloor insulation
- Ground moisture barrier installation
- New build insulation
Highlights
- Terra Lana insulation made from New Zealand wool
- Eco Insulation and Terra Lana ECO product ranges
- Warmer Kiwi Homes subsidy assessments handled as part of the quote
- Seaview branch covering Ōtaki through to Martinborough and Eketahuna
Location & Contact
Name: EnergySmart Wellington
Address: Unit 2/5 Wareham Place, Seaview, Lower Hutt
Phone: 0800 777 111
Website: energysmart.co.nz/contact-us/wellington-kapiti/
Home Insulation in Wellington at a Glance
| Business | Based in | Highlight |
|---|---|---|
| Total House | Maidstone | Wellington operation established in 2009 |
| Wellington Moisture Barriers and Insulation | Island Bay | Barriers made from 250 micron black polythene that complies with the... |
| Insulmax Wellington | Wellington | CodeMark certification for the retrofit wall insulation system |
| Brightr Wellington | Trentham | Registered Warmer Kiwi Homes provider, with free in home assessments |
| EnergySmart Wellington | Seaview | Terra Lana insulation made from New Zealand wool |
How to Choose the Right Home Insulation Installer in Wellington
- Check the installer is registered with EECA if you are hoping to use a Warmer Kiwi Homes grant, because only registered installers can deliver grant funded work.
- Ask what happens where access is restricted, since low subfloors, concrete ring foundations and skillion ceilings all rule out some standard methods.
- Match the product to the job: segment batts for an open ceiling, polyester or wool for a damp subfloor, and blown mineral fibre for a wall that stays closed.
- Confirm the work will be installed to NZS 4246, the New Zealand Standard for installing insulation in existing residential buildings.
- For a rental, ask for written evidence the finished work meets the insulation standard, or an exemption certificate where the property qualifies for one.
Frequently Asked Questions About Wellington Home Insulation
How much does home insulation in Wellington cost?
Wellington insulation companies rarely publish fixed prices, because the cost depends on floor area, how much crawl space there is, and the R value being specified. The usual process is a free in home assessment followed by a written quote. Grants change the picture considerably for eligible households, so it is worth checking your eligibility before you compare quotes.
What is the Warmer Kiwi Homes grant and who qualifies?
Warmer Kiwi Homes is a government programme that co-funds ceiling insulation, underfloor insulation and ground moisture barriers for eligible owner occupiers, along with heating. Eligibility depends on owning and living in the home, plus a Community Services Card, a SuperGold Combo Card, or living in a lower income area. Grant levels and criteria are updated from time to time, so check the current position on the EECA Warmer Kiwi Homes page rather than relying on an installer’s summary.
Do rental properties in Wellington have to be insulated?
Yes. Under the healthy homes standards a rental must have ceiling and underfloor insulation meeting the required standard, or a recognised exemption must apply where the ceiling cavity or subfloor cannot be reached. Landlords also have to state their compliance position in tenancy documentation. The requirements, including the exemptions, are set out on the Tenancy Services insulation standard page.
Can walls be insulated without removing the linings?
In many houses, yes. Retrofit wall systems blow mineral fibre into the wall cavity through small holes drilled in the cladding or the interior plasterboard, which are then made good, so the wall is insulated without a renovation. Not every installer offers it, and some will only insulate walls during a renovation when the linings are already off, so ask which method a company uses before you book an assessment.
Which suburbs do Wellington insulation installers cover?
Most quote across the whole region rather than a single suburb, working from bases such as Island Bay, Maidstone and Trentham in Upper Hutt, and Seaview in Lower Hutt, out through central Wellington, Porirua, both Hutt valleys, Kapiti and the Wairarapa. If you are in Johnsonville, Karori, Newtown or Miramar you are well inside the usual service area. It is still worth naming your suburb when you call, because scheduling often depends on which part of the region a crew is working in that week.
How long does an insulation installation take?
Retrofit insulation is measured in days rather than weeks, and a blown wall installation on a typical home is often completed within a single day. Ceiling and underfloor work depends almost entirely on access, so a house with a tight subfloor or a low pitched roof takes longer than one with a full height crawl space.
What R value do I need?
It depends on which rule applies to the property. A new build is designed to the H1 energy efficiency clause of the Building Code, while a rental is assessed against the healthy homes insulation standard, and the two are not the same number. An installer will specify a product to meet whichever standard applies, and should tell you the R value in the quote rather than after the job.
Is it worth insulating an older home that already has some insulation?
Often, yes. Ceiling insulation settles and compresses over time, can be pulled apart by trades working in the roof space, and older products frequently fall short of what is required now. Several insulation installers in Wellington will remove and dispose of the existing material and install a replacement, and an assessment will tell you whether topping up or replacing is the better option for your ceiling.
How We Chose the Best Home Insulation in Wellington
Every business in this guide was found by searching for home insulation in Wellington, 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 Wellington, 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.