Exploring the Regulations Around Double Glazing in New Zealand

Double glazing is widely recognized for its exceptional insulating properties, making it a popular choice for homeowners seeking to enhance the comfort and efficiency of their living spaces. In New Zealand, the interest in double glazing has grown significantly, prompting discussions about its regulatory status. Is double glazing a legal mandate, or merely a beneficial upgrade? This article delves into the regulations surrounding double glazing in New Zealand. We specialize in installing double glazing into existing aluminium windows and doors, aiming to reduce heat loss, lower heating bills, minimize road noise, and combat dampness in homes.

New Builds and Building Codes

In New Zealand, any new construction must adhere to the insulation standards set forth in the current building code, particularly the 'Building thermal envelope' section. This encompasses insulation in the floors, walls, windows, doors, and roof, measured by R-Values (thermal resistance rating). A higher R-Value signifies greater thermal resistance and insulation.

Over the years, the building code has evolved, progressively raising the minimum R-Value requirements. Since the mid-2000s, standard double glazing has become a necessity in most Kiwi homes to satisfy these thermal envelope requirements. With the 2023 updates to the building code, the bar has been raised further, necessitating the installation of high-performance double-glazing units, such as those featuring Low E Glass and Argon Gas Fill, alongside thermally separated aluminium joinery to meet new insulation standards.

While Ryan Double Glazing focuses on enhancing existing homes rather than new builds, we're always ready to provide advice to those considering new construction.

Regulations for Existing Homes

The insulation standards for existing homes are determined by the building code in effect at the time of construction. Consequently, many homes built before the mid-2000s feature single glazed windows and doors. However, renovations that require consent can trigger a need to update insulation to meet current standards, which may include double glazing.

Retrofitting double glazing is our specialty at Ryan Double Glazing. We ensure that the installation improves upon the thermal performance and safety of your existing windows and doors. Notably, most retrofit projects do not require consent, simplifying the process for homeowners.

The Landscape for Rental Properties

For rental properties, while there are standards for window safety, draughts, and ventilation, double glazing is not a requirement under the 2019 healthy homes standard. Despite this, installing double glazing can offer significant benefits, helping landlords meet the standard's criteria and providing a more attractive, comfortable living environment for tenants.

The Value of Double Glazing

Double glazing is a key feature in new constructions, aligning with modern requirements for high-performance glass and frames. While not mandatory for existing homes and rentals, it presents a wise investment, enhancing energy efficiency, reducing noise, and increasing property appeal.

Ryan Double Glazing is at your service to transform your home with high-quality double glazing solutions. Contact us for a bespoke consultation and quote, tailored to the unique needs of your home and project.

‍