Red LBP Blog Series: Foil Sisalation/insulation – The Down Low

Welcome to our series on identifying common building material issues! Today, we're exploring the ban on silver foil insulation and sisalation in New Zealand, shedding light on why this once widely-used material is now off the table. This ban isn't just a regulation; it's about keeping everyone safe, and it affects both property owners and builders. Let's dive into the details surrounding this ban, why it was put in place, and why every building inspection should highlight foil insulation as a potential safety hazard.

When Was Foil Insulation Banned in NZ?

The ban on installing and repairing foil insulation, whether in ceilings, walls, or underfloor areas, took effect on July 1, 2016. This ban is deeply rooted in Building Code Clause G9 Electricity and was introduced for one primary reason – safety.

Why Was Foil Insulation Banned in NZ?

The decision to ban foil insulation in New Zealand was made to ensure the safety of everyone involved in the construction and maintenance of buildings. The key safety concern revolves around the fact that foil insulation is a conductor of electricity. When it comes into contact with electrical wiring, it can become live, posing a significant electrocution hazard.

The ban was essential because many older homes had been insulated with aluminum foil. While it was initially chosen for its cost-effectiveness and ease of installation, it was discovered that foil insulation didn't provide adequate insulation and could become a serious health hazard, particularly when in contact with electrical wiring. Even small rips or holes in the foil could exacerbate these safety risks, making it imperative to replace damaged insulation.

Implications of the Ban: Why Every Building Inspection Matters

The ban on foil insulation and sisalation is a big deal, and it's not just a matter of compliance; it's about safety. Here's what you need to know:

1. Safety First: Safety should always be the top priority. When checking or removing existing foil insulation, it's essential to turn off the power supply to the house. And if you're uncertain about any aspect of the process, don't hesitate to seek assistance from a qualified electrician.
2. Friendly Reminder: Any comprehensive building inspection should diligently highlight the presence of foil insulation as a potential safety hazard. This isn't just about identifying the issue; it's about keeping everyone safe and informed.
3. The Transition to Bulk Insulation: With foil insulation now banned, property owners and builders should transition to bulk insulation. Materials like fiberglass or polyester are excellent alternatives. They provide effective thermal insulation without the safety risks associated with foil insulation.

In a nutshell, the ban on foil insulation and sisalation in New Zealand, which came into effect on July 1, 2016, is all about safety. It's a reminder that safety should never be compromised, and compliance with the ban is essential. Any building inspection should highlight the presence of foil insulation as a potential safety concern, emphasising the importance of adhering to the ban and replacing foil insulation with safer alternatives when necessary.