Many homeowners and apartment owners ask themselves: Are there metal reinforcements built into my window frames? These invisible components – often referred to as metal laminations – play an important role in burglary protection and the stability of windows. In this article, you will learn how to find out if your windows have such reinforcements and why they are so important.
✅ Why are metal reinforcements in the window frame important?
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Stability: Plastic frames gain additional strength from built-in steel or aluminum profiles.
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Burglary protection: A window with metal reinforcement is significantly harder to pry open.
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Durability: Reinforced frames remain dimensionally stable, even with temperature fluctuations.
Without these reinforcements, windows can be more easily deformed or broken open – a risk that burglars deliberately exploit.
🔍 Methods: How to check if your window frames contain metal
1. Magnet Test
Hold a strong magnet (e.g., neodymium) to the frame:
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Magnet sticks: Steel reinforcement is present.
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Magnet does not stick: Aluminum could be installed – or no metal at all.
2. Check manufacturer documents
In the window passport or in the installation documents, you will find information about the profiles used. Brand manufacturers usually clearly state whether metal reinforcement is integrated.
3. Tap Test & Weight
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A window frame with metal sounds duller when tapped.
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Reinforced windows feel noticeably heavier when opened.
4. Professional visual inspection
A window installer can inspect the core via concealed areas (e.g., in the rebate) or with an endoscope. This method provides clear certainty.
5. Contact manufacturer or installer
The manufacturer can confirm the exact construction using a serial number or product identifier on the frame.
🛡️ Conclusion: Simple tests for more security
Metal reinforcements in the window frame are a decisive factor for burglary protection and stability. With simple methods such as the magnet test or by checking the manufacturer's documents, you can check for yourself whether your windows are reinforced. If you want to be absolutely sure, you should consult a specialist company.
This way, you ensure that your windows not only look modern but also offer optimal protection for your home.
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