Filling crawl space with foam glass / cellular glass / hasopor?
thought about anything regarding the smell?
Yes, exactly. It’s the drystone principle I’m striving for. I'm thinking of going with hasopor all the way up as it looks now, why would one actually want "real" insulation on top? What are the reasons?reik said:As long as you get it snug against the walls so that air can't move, then it's a variant of the drystone you’ve got thereOtherwise, perhaps a layer of linen insulation between the hasopor and floorboards would be something if you don’t want them to have direct contact. I’ve built a drystone with peat and used that method. The hasopor is not organic, so for that reason it’s not needed, but my other thought is to have the insulation a bit "under tension" so it remains airtight even if the material underneath settles a bit.
Oh yes. Hasopor smells. Kind of a mix between seaweed and landfill.pelrik said:
However, not according to them http://www.hasopor.se/Dokument/Saekerhetsdatablad-rev-1505-.pdf
Appearance: Solid form, granular.
Color: Gray.
Odor: None (insignificant).
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Building conservationist
· 3 467 posts
Whether Hasopor smells or not can be easily found out by asking the user Godeha who has filled his foundation with Hasopor.SBH said:
Writes about it on his blog and mentions nothing about smell:
http://gorlinge.blogspot.se/search?q=hasopor
I spoke with Johannes Riesterer (svenskajordhus.se) who has done this type of foundation several times, and he also didn't mention that there would be any smell. I explicitly asked, and he said that it didn't smell.
His suggestion was to lay Hasopor almost all the way up to the floor, but also to lay a thin layer of clay on top of the Hasopor before the floorboards, mostly as an extra security for moisture management.
How have you experienced that it smells so bad SBH?
I am now almost 100% sure that we will be going with this method.
His suggestion was to lay Hasopor almost all the way up to the floor, but also to lay a thin layer of clay on top of the Hasopor before the floorboards, mostly as an extra security for moisture management.
How have you experienced that it smells so bad SBH?
I am now almost 100% sure that we will be going with this method.
can be a difference in what it is supposed to be used for.
but the one I have experienced having in the ground has smelled
but the one I have experienced having in the ground has smelled
What is it that's supposed to smell?
Isn't it made of glass and air?
Isn't it made of glass and air?
Building conservationist
· 3 467 posts
SBH maybe misunderstood and thought it was about "having trash in the foundation"?VillaAnna said:
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I fetched home two 1.5 cubic meter big bags with Hasopor and spent part of Sunday shoveling it into a room where I had dug out the floor. The material is so light that you can easily fill a larger mortar tub and carry it away.
It's impossible to dig in, but raking works well. As long as the level in the bag was not higher than the tub's edge, it was possible to rake it out of the bag. The last bit I emptied by dragging the entire bag in and turning it inside out.
It doesn't smell or dust, but surprisingly contained a lot of Hasopor debris that resembles sand. I assume it doesn't insulate much at all in such a fine fraction. Tried to compact a little primitively by doing some tap dancing over the Hasopor until it didn't pack down any further. Quite a bit more went in after repeated "dancing."
Overall, a positive experience to "Ha sopor" in the foundation.
It's impossible to dig in, but raking works well. As long as the level in the bag was not higher than the tub's edge, it was possible to rake it out of the bag. The last bit I emptied by dragging the entire bag in and turning it inside out.
It doesn't smell or dust, but surprisingly contained a lot of Hasopor debris that resembles sand. I assume it doesn't insulate much at all in such a fine fraction. Tried to compact a little primitively by doing some tap dancing over the Hasopor until it didn't pack down any further. Quite a bit more went in after repeated "dancing."
Overall, a positive experience to "Ha sopor" in the foundation.
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One should process Hasopor as little as possible for this purpose. Hasopor themselves recommend machine compaction, but it is only needed for purposes like road construction or very high loads. In a house foundation, it's sufficient to just dance a little on it
Otherwise, there is a risk of getting even more dust and thereby reduced insulation capability and capillary break. The less you handle it, the better it is.
Otherwise, there is a risk of getting even more dust and thereby reduced insulation capability and capillary break. The less you handle it, the better it is.
Building conservationist
· 3 467 posts
What did you do with the småsmulorna? Did you load them into the foundation as well?
One wonders a bit how capillary break and insulation capability are affected by the småsmulorna. Are the measurement values used in marketing based on Hasopor without småsmulor? Does anyone know?
One wonders a bit how capillary break and insulation capability are affected by the småsmulorna. Are the measurement values used in marketing based on Hasopor without småsmulor? Does anyone know?
It is probably not possible to get rid of the "Hasopor sand" that forms when the pieces rub against each other unless you wash or use compressed air on everything. And that in turn would probably just create more crumbs. So I shoveled it all down. Of course, the insulating value is reduced with the crumbs (which is really more like sand than crumbs), but that's how it has to be.
