Insulating wooden floor panel with straw

Hello everyone,

the idea:

[*]Single-family house in solid wood construction
[*]Wooden floor slab
[*]No basement
[*]Insulation with straw because it is sustainable and can also be implemented cost-effectively with very high insulation values

Does anyone have experience with this? Any spontaneous ideas?

What I spontaneously wonder:

[*]What about fire protection?
[*]How do you ensure that no pests settle in the straw? Even if everything is covered with wood, worms or similar might possibly burrow through?

I am grateful for any constructive answers!
Best regards

Spontaneous ideas?

Ask specialists who are paid for such exotic requests

Don't worry, with straw it at least burns out faster -
Nonsense - but I think I didn't want any straw.
In our old house, I had the following version for 30 years (despite all the prejudices, horror scenarios at the time.......
It was a solid construction with a raw concrete ceiling. Directly on the ceiling, we first laid a foil and then, I believe, screwed 8 or 10 cm beams onto it. Into the gaps we filled cork granulate and on top of that screwed 28mm solid wood planks. This floor is still in the house today and will probably stay there for another 30 years (in the meantime the house was sold). The pine planks (that was popular at the time) I once sanded or had sanded and afterwards stained gray-brown. In the middle totally chic, at the edges it looked like after a room fire because the color pigments were absorbed differently depending on the sanding. Since then I no longer sand floors but replace them.
Out of necessity, only an opaque coat went on (decorative wax from Osmo) and that was the best solution ever.
Under the planks, we had laid thin cork strips so it wouldn't creak. Since we screwed everything in, that was never the case.
Today people mostly use underfloor heating, which is probably why this is used less often. A pity. I was in so many houses, I would never have exchanged my floor.
My then construction specialist (oldschool) recommended to leave out the expensive cork and just put sand in between.
I think some will shake their heads about that but honestly that would have worked just as well; the sand insulates sound well.
Maybe you can make use of that; today I have underfloor heating and nice oak parquet but honestly I sometimes miss that rustic, solid wood floor that looked even better with scratches than before.
A friend poured gravel on his solid plank floor and then walked on the gravel for 3 weeks to achieve a rustic effect (you really have to come up with an idea like that).
Then vacuumed and also oiled or waxed with an Osmo wax or similar. That looked really great even if none of the neighbors could understand it.
Courage for individual decisions!!!

Google for building straw and ask experts.

I would be worried about building the foundation slab with it. You can only access it by demolition. Wall insulation can be replaced more easily.

I imagine more of a wooden structure as a base plate, which rests on a few point foundations and is therefore at least accessible from below by "crawling."

I think everyone will have to rethink raw materials in the future, and natural insulation materials offer a sustainable solution.

You probably always get this typical "just google it" response... even when explicitly asking for constructive advice.

Thanks for the answers

Well, now your question has been up for a day, so you shouldn't be so impatient. Besides, it is a very unusual request, which should be clarified with experts when making such an investment; including insulation standards, statics, etc.
I know this type of construction partly from other countries. For example, an acquaintance owns a house in Sweden that was built with pier foundations and lightweight construction.
What surprises me a bit, however, is that you want to realize everything in natural construction, but then you are still more worried about this nature.
I have lived in a similar way abroad, but animals in and around the house are simply part of everyday life there.
You also contradict yourself somewhat when you call the visiting animals "vermin" that you don't want in the house, yet you consider straw optimal and do not call it "WEED."
With such a construction method, you will naturally have to deal with insects, beetles, and other little creatures, as well as mice or possibly even rats or martens under the house. You cannot rule that out. Cats like to do their business there; other animals too, but that is probably familiar to you.
As I said, I know such living conditions from abroad and therefore also know the regular guests on and in the house. Hummingbirds were nice, but I could have done without some of the other creatures.
This, in turn, can only be prevented by targeted, sometimes drastic countermeasures, but then the ecological and free mindset you strive for is rendered absurd.
Also, with the construction you mentioned, only limited building mass can probably be realized for structural reasons.
Regarding fire protection, insurance may be more expensive (see thatched roof); also, nowadays the very common case of allergies should be considered.
I am building my large garden house / garden sauna in a similar way, but not the residential house for the reasons mentioned above.
There are many smaller suppliers of wooden houses or log houses, also from the USA and the Baltic states. I think you will find the answers you're looking for there.