CertainTeed™ is one of America’s leading producers of fiberglass insulation and Hancock Lumber is bringing it directly to you at competitive prices, every day.
• Superior thermal efficiency
• Excellent acoustic insulation
• Lightweight, easy-to-handle material
• Resistant to water absorption
• Greenguard®-certified for superior air quality (IAQ) performance

CertainTeed Insulation can save you money on utility bills*.

Proper insulation reduces energy use and saves you money. Whether its fiber glass batts and rolls, blowing wool or spray foam, CertainTeed has the right insulation for your home.

National Fiber’s Cel-Pak cellulose insulation is the greenest choice to insulate your home. Offering the greatest energy savings, the highest recycled content and the lowest embodied energy (the amount of energy it takes to manufacture) of any insulation choice, National Fiber’s Cel-Pak is not only a great choice, it’s the greenest choice, too.

• Much greater energy savings- up to 40%
• Highest R-Value per inch
• Blocks air movement
• Doesn’t require a vapor barrier
• No indoor air pollution
• Increased safety and comfort
• Reduced noise
• Much easier on the environment
• Made in New England