Is Cellplast a Future Firebomb?

[nikasp]

I am completely surprised when I read that it has become common. I thought it was some (bad) American invention that you only see on Instagram. I wouldn't buy a house if it's built with sprayed insulation. It feels like the ability to renovate is completely lost and it cannot be inspected either. Plus the unpleasantness of living surrounded by "plastic," I only think about the fire aspect.

 

[MrJay]

I am completely surprised when I read that it has become common. Thought it was something (bad) American invention that you only see on Instagram. I wouldn't buy a house if it's built with sprayed insulation. It feels like the renovability is completely lost and it also can't be inspected. Also, the discomfort of living surrounded by "plastic," thinking only about the fire aspect.

You seem to be confusing apples and oranges; spray insulation, which was quite common in Sweden in the 70s and is still widely used in the USA, is not the same as cellulosic insulation.

When talking about cellulosic insulation, it refers to part of the insulation consisting of an EPS foam board or the entire insulation being made of EPS (so-called ICF blocks - Insulated Concrete Form) with a concrete core. These blocks have existed since the late 30s in various designs and are likened to Lego in common parlance; they are stacked on top of each other, reinforcement is placed in, and concrete is poured in. What you have then is a passive concrete house. We are building with Jackon Thermomur, which is a Norwegian manufacturer of these systems, and will have a plastered facade. I could never imagine a regular wooden house or the like (these are also highly flammable). What no one seems to realize is that there is also an expensive variant of these blocks with graphite in them, which offer 20% better insulation while being much less flammable.

 

[nikasp]

You seem to be mixing apples and pears, spray insulation, which was quite common in Sweden in the 70s and still widely used in the USA, is not the same as foam insulation.

When talking about foam insulation, it refers to part of the insulation consisting of an EPS foam board or the entire insulation consisting of EPS (so-called ICF blocks - Insulated Concrete Form) with a concrete core. These blocks have existed since the late 30s in different designs and are likened to Lego in common parlance, they are stacked on top of each other, reinforcement is placed in, and concrete is poured in. What you then have is a passive concrete house. We build with Jackon Thermomur which is a Norwegian manufacturer of these systems and will have a plastered facade. I could never imagine an ordinary wooden house or the like (these are also highly flammable). What no one seems to know is that there is also a more expensive variant of these blocks with graphite in them, they offer 20% better insulation while not being nearly as flammable.

[bild]

I think you misunderstand me. But I would personally choose (preferably) wood or concrete when building new. I have become more traditional and circular economy-minded after we bought a cottage in 2015. I want it to be possible to renovate and replace, preferably myself with normal tools if needed.