What about sound deadening?

You would be hard pressed to find a higher performing material for sound abatement.

Wool has excellent sound deadening characteristics. You would be hard pressed to find a higher performing material for sound abatement. Noise reduction coefficients are out-performers when tested. Anecdotally we constantly hear folks telling us how quiet their vans become once the wool is introduced – note the ability to stuff wool in the headliner and voids indoors as a true difference maker.