Filling crawl space with foam glass / cellular glass / hasopor?

[Zebula]

Thanks for the thought. The T-wind I have used doesn't have that feature. You can bend it as you like, see image. but you really scared me there!

 

[Zebula]

A thought regarding wind barrier. It usually… QUOTE]
See my post below. /Z

 

[torporoman]

Very good! Nothing else to do. Moisture always moves upwards anyway. Warm air is lighter than cold, etc.

 

[Sommartorparn]

Is a membrane needed if the foundation is properly sealed from the inside with clay plaster? Can there be floor draught if the foundation is properly sealed?

 

[Zebula]

The floor in place, 25x170 floorboards. Protective paper and masonite protect the floor during ongoing work. Now seal one more round with clay, fabric, and paper. Panel and insulate the ceiling, etc., but that will be for another thread I suppose.

 

[nikasp]

Nice job!

 

[EliasF]

Bumping this, considering a similar basis for renovating an old extension. But I was wondering, is there any reason why you couldn't insulate with a layer of cellular glass boards at the bottom and then fill up with hasopor after that?
I think it should provide a much more insulated floor? It should be possible to achieve a more uniform and compact insulation than if you just pour hasopor?
Am I thinking completely wrong?

 

[nikasp]

Bumping this, considering a similar foundation for renovating an old extension. But wondering a bit, is there any reason why you couldn't insulate with a layer of cellular glass sheets at the bottom and then fill up with hasopor after that?
I think it should provide a much more insulated floor? You should be able to achieve a more uniform and compact insulation than if you just pour hasopor? Am I thinking completely wrong?

What is meant by cellglas, Gullfiber? It would probably become like a sponge full of moisture over time. And mice also like to nest in any dry parts. The advantage of hasopor or leca is that they are capillary-breaking.

 

[useless]

What is meant by cellglas, gullfiber?

https://cellglas.com/

 

[EliasF]

Yes, exactly the type of boards you linked to, we used them when we cast a slab, very easy to work with compared to cellplast and as I understand it, basically the same material as hasopor?
I mostly thought you should be able to achieve a continuous layer of insulation and if you also tape the seams, then moisture load higher up should decrease?

 

[Daniel 109]

You do not want a vapor barrier on the cold side.

 

[useless]

The glass blocks are waterproof, so the moisture barrier is just as much on the warm side.

 

[Daniel 109]

If you place dense slabs at the bottom and crushed material on top, it won't happen.

 

[useless]

Crushed stone is placed underneath, not on top.

 

[Daniel 109]

But I was wondering, is there any reason why you couldn't insulate with a layer of cell glass panels at the bottom and then fill up with hasopor after that?

But that's not how Elias was planning to do it.
(How do you get the quote in the right place?)