Composite foundation walls
Someone recently pointed me to these sites and asked my opinion on this composite alternative to concrete foundations. I know the topic of reducing concrete use comes up on GBA often due to its huge negative environmental impact, but I haven’t seen any mention of this type of product. On the surface, it seems like an awesome substitution as it incorporates both insulation and a vapor barrier into the design, is much lighter for transport and may potentially be less energy intensive to produce.
Being a new product with very little feedback or longterm info, I’d be concerned with sealing the panels to each other (maintaining water and vapor imperviousness) as well other degradation issues. Additionally, is there any way to compare it’s carbon footprint to concrete?
That being said, I’m interested in hearing other people’s thoughts on this.
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