Certainteed Insul Safe SP Blowing Wool is a fiberglass blowing insulation designed for pneumatic installation in open (attic) and closed (sidewalls/floor) construction cavities. It works in both new builds and retrofit projects, delivering solid thermal performance and effective sound control—with the kind of reliability you can count on when life happens (and so does the energy bill).

Key Features & Design

• Better coverage
• Thermally efficient
• Excellent sound control
• Won't settle
• Lasts for life of the home to reduce energy demand and costs
• Environmentally sustainable
• Noncombustible
• Noncorrosive
• Won't rot or decay
• Won't absorb moisture or support fungus growth
• GREENGUARD Gold Certified
• Limited lifetime warranty
• Formaldehyde-Free

Designed for pneumatic installation in open (attic) and closed (sidewalls/floor) construction cavities, Insul Safe SP also suits retrofit applications, making upgrading insulation quicker and more efficient without sacrificing performance.