Colour me skeptic. No mention of its properties, or composition. Sounds like some dude put iron powder in cement and cried eureka!
this post was submitted on 05 Jun 2026
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A magnetic cement (mixed with iron) will indeed make it easy to hang a picture on the wall without a drill at the small small price of blocking mobile and wifi signal
Also when you have to drill into a wall (say, to get a cable through it), those devices that detect wires won't be able to help you anymore. Sooo... Good luck?
You don't need wires if the cement is conductive \s
Ah yes, the mad scientist way. Keep clear of the walls during storms though.
If that's not enough of a sell for you, how about rusting walls from any of that iron that finds itself on the surface
And let's not forget concrete and steel are the most environmentally impactful building materials. Is "magnet" a good enough reason to fill your walls with them?
Wanted to ask exactly that - I don't care too much about blocking wifi because repeaters are a thing, but mobile reception is gonna suck big time. If this is going to be widely adopted, we will be back in the times of searching the spot with the least worst reception.
every picture on that page is ai generated, not very motivating to read the article
AI slop in article, disregarded.
If I use it in my bathroom grouting, do I make a Faraday cage?
How does it interact with EM radiation?