What to Do if You Find Asbestos During a Renovation
Renovation projects in New Zealand's older housing stock regularly turn up asbestos. Whether it's a textured ceiling, suspicious fibro sheeting, or floor tiles that look like they're from the wrong era — knowing exactly what to do in the next hour can make the difference between a manageable situation and a serious contamination event.
Stop Work and Clear the Area
The moment you suspect asbestos, stop all work. This is non-negotiable. Put down tools, send everyone out of the immediate area, and don't go back in until the material has been assessed. If the material has already been cut, sanded, or drilled — don't sweep up the dust with a broom or regular vacuum. Asbestos fibres released into the air can remain suspended for hours, and a standard vacuum will spread them further through its exhaust. Open windows to the outside to ventilate the space, close doors to adjacent rooms, and keep people out.
Get the Material Tested
You cannot tell whether a material contains asbestos by looking at it — laboratory testing is the only way to confirm. Contact a licensed asbestos assessor or a removal company like TCB Contractors to arrange sampling. The sample needs to be taken under controlled conditions to avoid further contamination — this isn't a DIY job. Most laboratory results come back within 2–5 working days. Once you have a result, you'll know exactly what you're dealing with, which determines your legal obligations and the next steps. Don't restart renovation work until you have the result.
Getting Your Renovation Back on Track
If asbestos is confirmed, a licensed removalist will contain and remove the material and arrange a clearance inspection by an independent assessor. Once a clearance certificate is issued, you can resume work with full confidence and the legal documentation to prove it. If no asbestos is found, you're free to continue. Either way, the testing and removal process is usually faster than people expect — at TCB Contractors, we work efficiently to minimise downtime on your renovation. Call us on 027 833 8944 for fast advice.
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