Are there any special handling guidelines for working with rock and slag wool insulation materials?

Manufacturers of rock and slag wool products have recommended a number of general work practices that should be followed by workers whose jobs involve installing, fabricating or handling these products, and by consumers installing or using rock and slag wool batt and/or loose fill insulation at home. In all cases, however, manufacturers' specific recommendations as outlined in their Material Safety Data Sheets (MSDSs) should be consulted.

• Use respirators when appropriate -- The use of respiratory protective devices may be appropriate under the following work conditions: (1) primary and secondary production of very fine rock and slag wool products; (2) installation of loose fill insulation; (3) work in any confined or poorly ventilated space; and (4) fabrication activities involving power tools. Consult individual manufacturers' MSDSs and product packaging for specific recommendations on the type and use of respirators.
• Wear loose clothing -- Loose clothing helps prevent these fibers from rubbing against skin. Depending upon the job conditions, gloves may also be necessary.
• Wear goggles or safety glass -- Eye protection is recommended during rock and slag wool insulation tear-out, blowing operations, or overhead application of rock and slag wool-containing products.
• Do not rub or scratch your skin -- Remove any rock or slag particles from the skin by washing thoroughly but gently with warm water and mild soap.
• Wash your work clothing separately -- Wash clothing that has been worn while handling or using rock wool or slag wool separately from other household laundry. This will prevent rock and slag wool fibers from being transferred to other clothes. Rinse your washing machine thoroughly before using it again. If there are a lot of rock and slag wool fibers on clothes, it is best to pre-soak and rinse the garments prior to washing.
• Keep your work area clean -- Avoid unnecessary handling of scrap rock and slag wool materials by keeping waste-disposal equipment as close to the working area as possible. Don't let scrap material or debris pile up on the floor or other areas. Follow an organized housekeeping program at all times.
• Prevent airborne dust -- Local exhaust ventilation, adequately designed and maintained, is the preferred method for the effective control of rock and slag wool dust. In particular, workers engaged in operations such as sawing, machining and/or blowing rock and slag wool have a greater potential for exposure.

REMEMBER - Recommended work practices and exposure guidelines vary among manufacturers. Always consult your company's MSDS and other company literature for specific recommendations.