If you’re renovating or working on an older home or building here in Aotearoa, there’s one thing you definitely want to keep in mind: asbestos. It was everywhere from the 1930s right through to the 1980s, and while it did the job for fireproofing and insulation back in the day, we now know it’s seriously dangerous if disturbed.
Even though it was banned in 2016, there’s still a good chance you’ll come across it in older buildings. So here’s a quick rundown of the history, where it shows up, and what you need to do to stay safe.
How Did Asbestos End Up in So Many Kiwi Homes?
Back in the early 1900s, asbestos started getting used more and more because it was cheap, strong, and could handle heat. After WWII, it really took off—used in roofing, cladding, cement sheets, insulation, and more. It was pretty much the go-to building product.
By the 1950s and 60s, other countries started raising alarms about health issues, but it wasn’t until 1978 that New Zealand brought in specific asbestos regulations (which still didn’t ban it outright).
Fast forward to 2016, and we finally put a full stop to it—banning the import and export of asbestos and anything containing it. But heaps of older homes and commercial buildings still have it in the walls, ceilings, or even underfoot.
Where You’ll Find Asbestos
If your place (or the one you’re working on) was built before the mid-80s, chances are high there’s some asbestos kicking around. Even buildings from the late ’80s or ’90s might still have some if older products were reused.
Common spots include:
- Corrugated roofing and exterior wall cladding
- Textured ceilings (like that popcorn stuff)
- Vinyl or asphalt floor tiles
- Insulation around pipes or hot water systems
- Eaves, soffits, and guttering
- Some bathroom linings and even old fuse boards
It also popped up in things like brake pads, gaskets, and fireproof clothing—so not just buildings.
Why It’s a Big Deal
Why It’s a Big DealAsbestos isn’t dangerous if it’s in good nick and left alone. The trouble starts when it gets broken, cut, sanded, or drilled. That’s when the fibres get into the air and, if breathed in, can cause serious health issues like:
- Asbestosis (scarring of the lungs)
- Lung cancer
- Mesothelioma (a rare but aggressive cancer)
These don’t show up straight away either—sometimes it takes decades. That’s why it’s crucial to treat it seriously.
Planning Renovations or Demolition?
Planning Renovations or Demolition?Before you start smashing walls or pulling off old cladding, get an asbestos survey—especially if the building’s older. It’s the law in many cases, and it could save you a heap of trouble (and your health).
WorkSafe NZ has some great resources for homeowners, tradies, and businesses. Here are a couple of key ones:
If asbestos is found, don’t DIY it—only licensed professionals should handle or remove it.
Final Word from the Team at RB THOMAS LTD
Final Word from the Team at RB THOMAS LTDAt the end of the day, asbestos is one of those things you don’t want to mess with. It might be hidden, but it’s still hanging around in a lot of Kiwi buildings. Whether you’re a homeowner, investor, or builder—it pays to know what you’re dealing with before tools hit timber.
If you’re planning a reno, demo, or even just unsure—get in touch, and we’ll help you get the right checks done before anything goes sideways.
