Retrofit your exisiting home or rental

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Retrofitting Insulation in your home

Retrofitting refers to the addition of insulation to existing structures, elevating their thermal efficiency, cutting down on energy usage, and ensuring comfort all year round. Different insulation materials offer varying properties, advantages and disadvantages.

Premier Insulation offers two insulation products; Premier Glasswool and Premier 100% Polyester Insulation. Two of the most commonly used materials throughout New Zealand. 

A home with inadequate insulation can quickly lose warmth, with heat escaping through its walls, ceiling, and floors. Conversely, a property with optimal insulation not only ensures consistent comfort but also contributes to significant savings on energy bills. It’s noteworthy that around 35% of energy costs are attributed to heating. Over time, efficient insulation essentially “pays for itself” as it reduces heating frequency by effectively retaining warmth.

In addition to reducing your power bill, insulating your home can provide several other benefits. One prominent benefit is enhanced indoor air quality. Proper insulation acts as a barrier against drafts that might introduce allergens like dust, pollen, or mold spores, thus potentially minimising respiratory issues. Furthermore, it combats moisture accumulation, a common culprit behind mold and mildew, safeguarding your home’s integrity and your well-being. 

Insulation & Rental Properties

Since July 1, 2019, the installation of ceiling and underfloor insulation has been mandatory in all rental properties where reasonably practicable to install. As a landlord, it’s essential to meet the specific insulation requirements of the Residential Tenancies Act for the Healthy Homes Standard.

Insulation is critical for maintaining a warmer and healthier home, which can result in lower heating costs, as well as reducing the growth of mould and mildew. The Residential Tenancies Act 1986 (RTA) has two sets of regulations that govern the standards for insulation requirements in rental properties: The Residential Tenancies (Healthy Homes Standards) Regulations 2019 and the Residential Tenancies (Smoke Alarms and Insulation) Regulations 2016.

For more information on your obligations as a landlord, visit here.

The Healthy Homes Standards have expanded on existing regulations by introducing specific and minimum heating, insulation, and ventilation standards in rental properties. While ceiling and underfloor insulation have been compulsory in all rental homes since July 1, 2019, the Healthy Homes Insulation Standard has furthered these regulations, and some existing insulation may require topping up or replacement. Between July 1, 2021, and July 1, 2025, all private rentals must comply with the Healthy Homes Standards within specific timeframes from the start of any new or renewed tenancy.

To learn more, visit and use the online tool to determine whether you need to upgrade your rental property’s insulation to meet the Healthy Homes Standard at

At Premier Insulation, we offer assessments for rental properties and provide recommendations to ensure that your property is compliant and meets all the tenancy requirements.

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Areas to Insulate

When retrofitting insulation, focus on three key areas: the Ceiling, Underfloor, and lastly Walls. The ceiling prevents rising heat from escaping, underfloor insulation offers warmth from below, and wall insulation maintains interior temperature and reduces external noise. Addressing these zones optimises energy efficiency and comfort.

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Second Step: Underfloor 

After addressing ceiling insulation, the next step is to focus on your underfloor insulation. If your home boosts a wooden floor, there’s likely space beneath it where we can attach insulation directly to the timber’s underside. 

By insulating this area, you’ll minimise heat loss and counteract drafts that sneak through floorboard gaps, ensuring your floors remain warm and comfy during colder months. 

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Begin at the top: The Ceiling 

The ceiling is the primary culprit for heat loss, on average 35% of heat loss escapes from the ceiling, making it a logical starting point for insulation. Think ceiling insulation as a blanket, it captures warmth, ensures your home remains warm during winter and cooler during summer. 

Installing high-quality ceiling insulation also effectively addresses problems like mould and condensation.


Final Stage: Warmth and Sound Reduction 

By insulating your walls, you’ll not only see an improvement in your energy costs but also benefit from improved sound insulation, diminishing external noises.

For existing homes, it’s vital to understand that insulation can only be added to the walls if you’re planning on taking down the wall or GIB board first. Without this step, our insulation cannot be applied to pre-existing homes. Insulation in New Builds are installed before the GIB board is applied to walls. 

Why Choose Premier? 

At Premier Insulation, we take pride in being a locally owned and operated business by Kiwis, for Kiwis. As one of the only insulation companies in New Zealand to offer both supply and installation services for Glasswool and Polyester Insulation. This means we can give you unbiased advice and quotes on our product range, as we stock two of the most common, highly regarded insulation products.

Our network of Premier Insulation partners operates businesses in their local areas throughout the country, providing you with personalised and reliable service.

We understand that every home is unique, and that’s why we offer a wide range of Glasswool and Polyester insulation solutions to meet your specific needs and budget. Our team will work with you to determine the best insulation solution for your home, ensuring that you receive nothing less than outstanding customer service from start to finish.

Whether you’re renovating your home or simply looking to retrofit insulation in your ceilings and underfloor, you can trust us to provide you with quality products and service that are both effective and affordable. 

Contact us today to learn more about our insulation solutions and how we can help you create a warmer, healthier home.

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