Light Weight Concrete - Floor Construction

Lightweight concrete is used as a sound barrier, to reduce noise, between floors. It's usually 1 1/2 inches thick and is poured on top of a wood framed subfloor. It's rarely used in single family homes, but can be seen in apartments and hotels.


What's The Difference Between Lightweight Concrete And Regular Concrete?

Regular concrete is made by mixing cement, rocks and sand together with water, to form one of the most durable construction materials available today, but it's heavy.

Lightweight concrete is usually made from cement, water, sand and a light weight material called perlite. This reduces the weight of the concrete mixture, allowing it to be poured onto a properly engineered floor.


Can I Use Lightweight Concrete In My House?

Probably not, your house would need to have been engineered, to support the weight. Even though lightweight concrete gives you the impression that it's light weight, it's not. I've seen floors that were designed and engineered for lightweight concrete, only to find out later that they ended up sagging and failing, in the long run.

You would need to contact a structural engineer for more information. You shouldn't ever add any additional weight to a building, without checking with a structural engineer first. Lightweight concrete would be the perfect example.


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