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Does the Fox Blocks contain recycled materials?
The plastic webs in Fox Blocks forms are 100% recycled postindustrial polypropylene. The EPS insulation is virgin material. Recycled content for an ICF block is measured by weight. The recycled content by weight of a standard 6″ Fox Blocks form — 48%.
The Fox Block Interlock
When the Fox Blocks interlock was designed our Engineering staff made the choice not to focus on being within 1÷2” to 1” from the building dimension but to give the strongest interlock possible.

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Building for the Future: Exploring ICF Construction in Washington State

