Soybean Foam Insulation

Foam insulation made from soybeans is both energy efficient and eco-friendly since it doesn’t release volatile organic compounds (VOCs) while drying. After spraying it on, the insulation expands to 100 times its size to fill every crack and crevice. This creates a seamless air barrier that can save from 30% – 50% on energy bills.


You may not think that you can look in your kitchen cupboard or refrigerator to find inspiration for energy savings, but here it is right here. While it’s true that people have made some interesting things from tofu, I’m actually talking about what all these things are made from…the soybean. And, one of the most energy-efficient and eco-friendly uses for this plant is insulation. Soy-based insulation that uses water to blow it in place is even better, because it means there will be no off-gassing of chemicals. Once the soy insulation is sprayed into your walls, ceilings and floors, it will expand to 100 times its original size, filling every nook and cranny creating a seamless air barrier. You can save anywhere from 30%-50% on energy bills and it’s also a great soundproofer.


  1. Your video article re: soybean foam insulation came up in my search for DIY soybean foam insulation installation.
    However, I don’t see anything in you presentation about either installation or sources for this product.
    Could you please help me find this or other completely non-toxic foam (or other) insulation I can install myself? I need it to insulation the walls, ceiling and floor of a free small freestanding back yard office building to be used by a severely chemically sensitive individual (myself). Thanks. –JH

  2. Hello, I would like to know more about installation in an older home (1920’s). Is the closed cell or open cell more advantages for this age home & being able to get to old wires if they need to be replace? Can this product be added to the exterior walls? How?

    You can see I need your help!!
    Thanks so much. Fran B

  3. Gentlemen/Ladies—–We are in the process of rehabilitating 200 apartmeent units in a HUD development.
    We wish to use soy-based foam insulation, BUT we can not convince HUD as to its advantages. Our supplier (Bio-Tech-
    nology Rogers, AR) does not have sufficient to make a con-vincing argument. We need a Utility Study to show HUD. Do you have a suggestion ?

  4. please tell me how to calculate the amount of soy spray foam product i need in a free span steel bldg. 25×50 with a 13′ cieling. also the cost of product and diy kit.


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