Wool insulation

Some companies do not use any adhesives or bonding agents, but rather entangle the wool fibers into in high R-Value, air capturing knops (or balls) that hold themselves together.

[2] Sheep wool is a natural, sustainable, recyclable material, which is biodegradable, and has low embodied energy.

It does not endanger the health of people or the environment, and does not require protection to install, unlike fiberglass insulation.

Wool is a highly effective insulating material which performs better than its rated R value because it can absorb and release moisture.

felted and woven sheep wool pads as an insulating layer on the walls and floors of their dwellings, called ger or yurts.

It is already popular in Australia, which produces 55% of the world's raw and processed wool,[4] as well as in Europe and Canada, and is gaining ground in the United States Wool insulation commonly comes in rolls of batts or ropes with varied widths and thicknesses depending on the manufacturer.

Sheep wool insulation is often treated with borax to enhance its fire retardant and pest repellent qualities.

[6] Borax mining employs one of the cleanest mining techniques available[7] but borax is increasingly coming into focus as a suspected reproductive toxin having been considered relatively safe for many years; animal ingestion studies in several species, at high doses, indicate that borates cause reproductive and developmental effects.