Hemp Insulation: Pros, Cons, and Cost

Hemp insulation is a natural, plant-based insulation material made from hemp fibers. The truth is hemp insulation is a natural and wonderful thing, and it’s coming to a home near you.

We’ve got the scoop on everything you need to know about this new product that is making a big splash with curious homeowners and builders.

In this video – we’re going to dive into the real pros and cons of hemp wool batt insulation and throw some details on just how it has the power to impact your health, your wallet, and the planet.

0:00 Introduction to hemp wool insulation
1:55 What are the environmental advantages of hemp wool insulation?
3:05 What are the health advantages of hemp wool insulation?
4:15 What are the disadvantages of hemp wool insulation?
4:39 How much does hemp wool insulation cost?
4:55 Is hemp wool a good insulator?

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  1. What about that leggo style hempcrete that uses "vegetable oil-based polyester resins or polyols"?
    Are the polyol supports (which look like plastic) inside the hempcrete eco friendly or less hostile?

  2. You said that hemp insulation is pest resistant. Does this mean rodents? Also, I need to find a contractor who will install this in the Washington DC area. Suggestions?

  3. I believe the fibre bast from the stems is crushed, scutched and treated with borax to make a fire resistant batt. The hurd is woody pith used to make hempcrete and a lot of other products. Nice to see it being discussed.

  4. I believe industrial hemp cultivation improves the soil and will contribute significantly in carbon dioxide sequestration whiles improving the economy from multiple lines of new environmentally sustainable products

  5. I've been hearing a lot about this lately, and it's gradually becoming more widely available as time goes on. I have heard from some European contractos that it will rot under certain circumstances, but I don't know accurate this is, since no one in Canada or the U.S. mentions the problem. They often build homes with cement or stone, though, and that may have something to do with the concern. (I wonder if the smell of newly-mown grass counts as "off-gassing"? Pretty pleasant, if is does!

  6. So it contains textile polyester fiber as a binder, but you can compost it? You mean the hemp could've been composted, if it wasn't for the plastic binder.
    Now this material is better than foam insulation, and safer than glass, but far from natural.

  7. Thank you for this. The only thing I never hear people talk about as a con specifically,?is the fact that the Hemp wool always seems to contain some percentage of plastic in it. 😕 This is a huge drawback to me, because it takes away from the compostability of the product, the sustainability of it in the long run, cradle to cradle like. We don’t need more micro plastics in the world! I really want to use hemp wool in my build, but that part is very disappointing to me. I wish there was something they would find to use as an alternative.

    And also yes, the fire proof shocker! 🔥😳🔥 Wow. That’s disappointing. That it isn’t as fire proof as they claim.
    I wonder if sprinkling it all over in both sides with boric acid / borax mixture would could help that?

  8. I have in many many years, liked wood fibre insulation as the best available insulation material. But I must say that hemp wool insulation is very very interesting as well, as it has many of not all of the benefits of wood fibre insulation, but the turn around time (from seed to finished product), is much faster than it is for trees. So in princip you can grow a hempwool field several times a year – if the climate etc. is suitable for it. Very interesting and very nice video. 🙂

  9. Hopefully by the time you would need to replace it this product would be much more widely available by then. Everything seems to point to using this for my camper. Thank you!

  10. Considering how tight and smooth Hempwool Insulation can be… If it's done right is there any real need to 'finish' the interior wall with Drywall or similar?

    I kind of like the rustic look you showed off here

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