Loose Fill Wool Knops

Non settling insulation, specially designed for vans

Air capturing insulation balls made with 100% sheep wool.

Using Wool Knops to insulate

Loose Fill Wool Knops

Have a High Insulation Value. The knop is specially designed to resist road vibrations, and also has the innate ability to:

– Absorb moisture from the environment.

– Act as an excellent sound insulator

– Keep the air free of odors

– Clean the air, Filtering and rendering down formaldehyde and other VOCs,

– Remain chemical-free

Among other things!

Gain Comfort

Completely insulate all shapes and gaps in your VAN’s cavities

Wall cavities in vans are 2 inches on average, but in many areas they are deeper (up to 4.5 inches). Loose fill knops will completely fill those uneven cavities providing an even higher R-value.


Our patented manufacturing process makes a well-formed Wool Knop (ball) that is completely resistant to road bumps and vibration.

Basically, it’s designed to put up with life on the road and all the bumps that come with it.

It doesn’t compress, settle, or slump like other insulations, and it will retain its thermal and acoustic value for 50 years.

How is it installed?


Installing wool in your van is easy and efficient. In short, secure our fiber mesh to the studs of the van, then blow in the wool with a leaf blower! If that sounds crazy, we will gladly walk you through the process and provide pictures and videos.

Don’t worry about about breathing boric acid or any other harmful chemicals (because there aren’t any), and you don’t even need to wear gloves when installing. Our wool is a blend of lambs’ and sheep’s wool that doesn’t itch. 

Once it’s installed in the walls, the wool can still expand by 20%, making sure that the cavities are perfectly filled. Then it’s time to adventure! 

Do you want to see how it is installed? Watch this Installation Video

How Much Loose Fill Wool You Need

Most vans have about a 2-inch cavity depth that you can fill with insulation. If you are securing the mesh right against the van’s metal framing, then a 2-inch covering will do nicely. If you are framing it out a bit with wood, then you can figure for a 2.2” to 2.7” coverage — this also will ensure that you have enough wool to fill gaps in the doors and other hard to reach places. Filling in those pockets will keep your van from sounding tinny and rattly and give you a solid, tight sound and feel.

Here is a chart to give you an idea of how much wool you will need.

We have excellent news for you!

We ship the following business day

If your order requires expedited shipping, please contact us.

Bale with 220lbs of natural wool insulation loose fill Insulknop 5825
Loose Fill Insulknop 450sq/ft box
Wool Knops are the high insulation value, long term solution for insulating...
Rated 5.00 out of 5
Bale with 220lbs of natural wool insulation loose fill Insulknop 5825
Loose Fill Insulknop 450sq/ft box
Wool Knops are the high insulation value, long term solution for insulating...
Rated 5.00 out of 5

If you have a van model that’s not on the chart,, use this formula to calculate how much you need:

[150 ft box] 1 box will cover 150 sq/ft at 1 inch thick

[450 ft box] 1 box will cover 450 sq/ft at 1 inch thick

Measure your walls, floor, and ceiling to get your square footage.

If you have 300 sq/ft in your van, and you didn’t add a lot of framing, you can go with 2 inches of insulation on average. You would need 300sq/ft x 2 inches = 600.

You will want to match that 600 as close as you can, so that would be 1 [450 ft box] and 1 [150 ft box], to fill all you need.

Add one box of mesh, this is enough to completely cover any van model.

Then you’re good to go!

Enjoy your VAN for many years to come


We offer a 30 year warranty, even though some places like Buckingham Palace have maintained wool installed in good condition for over 200 years.

It is safe to say that the long-lasting performance of our insulation will far outlive the van it is installed in.

If you are not satisfied with the product you will get your money back with no questions asked.

What do our customers say?

"We started our van build and used the wool in all the places where we could. Before we could finish the installation we had to hit the road for a trip. We drove about 2000 miles with just the wool stuffed into the holes of our van and we were really impressed with how much it stayed in place. Now this was a completely ridiculous thing to do. We didn’t cover up the holes at all and we were just curious how it would work out. And to be honest it worked out way better than we thought. I actually have total faith in this product. And I’m glad that we went with this over the traditional bats."
“We enjoyed the whole installation process, the feel of the natural wool and not having to use special equipment. I thought it would be a more difficult task to do but it only took a couple of days. We are delighted."
""I came across Wool Life when I was looking for chemical-free insulation. It feels so good and is so clean! I also love the sound absorption. I love this wool!”.
Wool Enthusiast
 "I thought that it was harder to install, but the process was easy, and it had incredible results in the VAN, filling cavities that were difficult to reach with other products. Highly recommended."
Gabriel & Mary


At first, installing the loose fill knops might seem a little intimidating, but the install process is actually quite smooth and simple, and has several advantages over the batt that make your van more comfortable. The first advantage is that the cavities are completely filled (which means more and better acoustic and thermal insulation). Secondly, the knops will never settle with road vibration as the knops are tangled together and constantly trying to expand if they have the room to. Here’s a link to our install page on all things loose fill knops!

Yes we sell traditional Wool Batts, and Woolen Batt Blankets (one large, convenient piece 7’ by 5’ 8”)

No confusing puzzle assembly, no gaps from road vibration.

Our wool is washed with a very small amount (0.25% by weight) of a non-ionic and non-toxic insect repellant so that moths and carpet beetles will not destroy it. This product, called Eulan SPA, is based on the chrysanthemum plant and is a liquid detergent added to the final scouring (cleaning) stage of the wool. It is absorbed into the inner core of the wool fiber, so it is not a topical deterrent or powder. We’re happy to share the full spec sheet with you and answer any questions if you have them.

We NEVER use boric acid because of the health concerns associated with it. Companies that treat with boric acid usually treat with a very high level, 1% by volume, which is 8% by weight.

The fabric mesh is used to hold in our loose fill wool as it is being blown in. It is made of 100% Polypropylene. This is the least expensive and most durable option, but you can use any kind of mesh to secure the wool. It just needs to be breathable with holes large enough to let out a lot of air as the wool is being blown in, but small enough to keep the wool balls (about the size of raisins) contained.

We keep all of our products stocked well ahead of time so that we can ship immediately! We don’t want to hold up progress on your van build, so as soon as you order, we ship out your wool the following business day. Transit times with UPS are generally 2-4 business days, depending on where you are.

The loose fill wool is attached to walls and ceilings by first installing a fabric mesh on your stud walls. Then the wool is blown into the cavity with a vacuum blower (Black & Decker Leaf Vacuum/Blower) and some shop vac hose. Here’s a link to our install page on all things loose fill knops!

If you have specific allergies, please read the full spec sheet and table of contents of the wool.

If you need more information,

or have questions
Perfect! We enjoy helping.

Call us +1 (406) 204 3895

or email us vanlife@wool.life

We will answer within 24 hours. Promised!

Please don’t contact us for soliciting