Also, state or federal tax credits may apply. Check with your State Energy Commission, local power company, or local home center for the optimum R-value in your region. Safety Safe-use practices are important when you work with any type of insulation. Dust mask and goggles are necessary for work with all types of insulation, or when sawing wood. Fully cover your body, if possible long sleeves, a hood, long pants, and gloves.
Insulating materials are skin irritants.
Always use the correct tool for the job. Be sure power tools are properly grounded. Watch power cord placement so that it does not interfere with the tool's operation. A hard hat should be worn, since roofing nails may be sticking through the sheathing. If you are not allergic to tetanus shots, be sure yours is current.