Turning sawdust into fire-resistant materials— What is usually burned to generate energy today could protect houses tomorrow

https://lemmus.org/post/20947408

If it’s densely packed, most materials will be fire-resistant. The same can be achieved with straw.
Durra Panel - A compressed straw building panel | green magazinegreen magazine

Durra Panel is the fully-certified wall and ceiling panel that insulates against sound and heat while being stronger, safer, and cheaper than a plasterboard walls. It is also 100% recyclable and 100% biodegradable.

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I assume that Mud brick is also fire proof? Also it’s supposed to be breathable. Wonder if we should start building from older materials. Of course you won’t be building high structures from it. Imo we just need lot’s of cheap housing, they should start building commie blocks again. They are efficient and if designed right great place to live.
Mudbrick - Wikipedia

Problem is that there’s no single solution to building materials, as the materials’ properties depend greatly on the local climate. Wooden houses are very breathable and can last hundreds of years with proper maintenance, but are only really suited for drier climates, such as Scandinavia and other parts of northern Europe. Brick is solid and more fire-resistant, but needs carefully designed ventilation (just look at the damp old houses in the UK and southern New Zealand). Metal parts are great for structural strength, but are at risk of corroding if they’re used near the sea. In the US, you could compare houses in f.ex Arizona, Louisiana and Washington. Panels made of straw and sawdust could be great in some areas, but in some other areas (tropics, for example), they would most likely be unusable.