If you're living in an older Sydney apartment, you might be sitting on a hidden danger without even knowing it. Magnesite flooring, once a popular choice in buildings from the 1920s to the 1980s, can turn into a major headache. This article dives into what magnesite is, why it's a problem, and the key signs of magnesite damage you can't afford to ignore. We'll keep things simple and straightforward, so you can spot issues early and protect your home. Inspired by insights from experts like Carpet Removal Sydney and Australian Financial Review, we'll help you understand this common issue in Sydney apartments. What is Magnesite Flooring? Magnesite flooring is a type of topping used on concrete slabs in many older Sydney apartments. Made from magnesium oxychloride cement, it was popular for soundproofing and levelling floors back in the day. You'll find it in buildings built between the 1920s and 1980s. Experts say up to 90% of these apartments might have magnesite-related defects. It's often hidden under carpet or tiles, so you might not even know it's there until problems start showing up. Why is Magnesite a Problem in Sydney Apartments? Magnesite contains high levels of chlorides, which can cause big issues over time. When moisture gets in, it leads to sweating and the spread of chlorides into the concrete below. This corrodes the steel reinforcement inside the slab, a condition known as concrete cancer. In Sydney's humid climate, this degradation happens faster. If left unchecked, it can lead to structural damage, costly repairs, and even safety risks. Some compare it to the cladding crisis, but magnesite might affect more buildings. Repair costs can run into the thousands, or even millions for larger blocks. That's why early detection is key for Sydney apartment owners. Signs of Magnesite Damage You Can't Ignore Spotting magnesite issues early can save you a lot of trouble. Here are the main warning signs to watch for in your Sydney apartment: Cracked or bulging floors: Look for cracks in tiles or lumps under your carpet. This happens when the steel inside rusts and expands. Dampness or moisture: High damp meter readings or sweaty floors are a red flag. Magnesite absorbs water easily. Rust stains or spalling concrete: If you see rust on the floor or concrete flaking away, it's likely concrete cancer from magnesite chlorides. Warping or chipping: Floors that warp, chip, or show wear due to water damage signal it's time for inspection. Strange odours or health concerns: Sometimes linked with asbestos, magnesite can affect air quality if deteriorating. If you notice any of these signs of magnesite damage, don't wait. Get a professional inspection right away. What to Do If You Suspect Magnesite Issues Facing potential magnesite problems? Here's a step-by-step guide: Inspect your floors: Lift carpets or check under tiles if possible. Hire a building inspector familiar with Sydney apartments. Test for magnesite: Professionals can confirm if magnesite is present and assess damage. Plan for removal: If needed, magnesite removal in Sydney involves stripping the topping and repairing the concrete. Look for experienced remedial builders. Prevent future issues: After removal, apply waterproofing and choose modern flooring options. For expert help with magnesite removal and concrete repairs, contact Elyment Group. We specialise in remedial services for Sydney properties. Visit elyment.com.au for more info. Key Takeaways Magnesite flooring is common in older Sydney apartments and can lead to concrete cancer due to chlorides. Watch for signs like cracks, rediscovered, and bulging floors. Early detection and professional removal can prevent costly damage. Always consult experts for inspections and repairs. Don't let magnesite turn your home into a time bomb. Stay informed and act fast.