Building insulation materials jagged, shredded, or scuffed). When found in the home, asbestos often resembles grayish-white corrugated cardboard coated with cloth or canvas, usually held in place around pipes and ducts with metal straps. Things that typically might contain asbestos: All polyurethane foams are composed of petrochemicals. Foam insulation often uses hazardous chemicals with high human toxicity, such as isocyanates, benzene and toluene. The foaming agents no longer use ozone-depleting substances. Personal Protective Equipment is required for all people in the area being sprayed to eliminate exposure to isocyanates which constitute about 50% of the foam raw material. Fiberglass is the most common
Wool insulation crew. It can be used in the roof, walls and floors of any building type as long as there are spaces to put the insulation in. Installing wool insulation is very similar to installing conventional insulation batts; it can be held into place with staples or it can be friction-fit, which involves cutting the insulation slightly bigger than the space it occupies, using friction to hold it in place. Sheep are no longer farmed primarily for their wool; however, they need to be clipped annually to protect the health of the animal. Some wool used to manufacture insulation is the