Insulating with sheep's wool rather than glass wool is kinder to the environment.
From the independent.co.uk
The most common modern day material is glass wool, or wrappings of aluminium foil.
From the en.wikipedia.org
For insulation material, see glass wool.
From the en.wikipedia.org
Acoustic heat engines usually use a copper plate to conduct heat to a high-surface-area material like glass wool, which then heats the surrounding air.
From the newscientist.com
Before setting the pipes in the trench he had to insulate them with glass wool, and his hands were so full of it that he couldn't even wipe his nose or rub his eyes.
From the theatlantic.com
The process involves drilling holes into the walls of your home and filling the space with insulation materials, such as glass fibre wool.
From the independent.co.uk
In the manufacturing report, the fastest-growing industries were clothing makers and producers of nonmetallic goods such as glass, mineral wool and ceramic products used in construction.
From the bostonherald.com
The fastest-growing industries were clothing makers and producers of nonmetallic goods such as glass, mineral wool and ceramic products used in construction.
From the suntimes.com
I had three who lived in a glass jar half-filled with cotton wool.