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SANCTUARY® DEFENSE Blow-In or Spray-Applied Insulation

SANCTUARY DEFENSE is a high-performance, all-in-one cellulose insulation treated with BORABARRIER® 1 EPA-registered pesticide that ensures long-lasting protection from pests. Blown in, dense-packed or spray-applied, this cellulose is the smartest way to insulate a home, providing superior quiet, comfort, efficiency and fire protection.

Note: SANCTUARY DEFENSE is not available through retailers. Please contact a Territory Sales Representative on how to buy.

  • Bag Size 25 lbs.
  • R‑value per Inch 3.7
  • Coverage 27.4 sq. ft. per bag at R-30
  • Insulation Type Cellulose

Applications

  • Walls
  • Attics
  • Floors
  • Ceilings

Certifications

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Product Features

  • 25 Types of Household Pests KilledEco-friendly barrier that protects the insulation against common pests in attics, walls, ceilings and floors.1
  • 60% Reduction in Sound Power2Best-in-class acoustic performance reduces unwanted sound to create a quieter and more peaceful home.
  • 25% Savings on Heating and Cooling3Keeps indoor temperatures steady while reducing energy bills.

Common access points that make every home a target

Every year, common pests such as ants, cockroaches and termites wreak havoc on homes, causing billions of dollars in damage. Although over 8.3 million homes are treated for pests, many homeowners still find themselves susceptible because some types of insulation harbor pests.

Technical Information

Power every project with knowledge

Access all the technical details, building code support and installation know-how you need to insulate with confidence — and meet today’s building standards with ease.

Data Chart

Flammability Characteristics
Critical radiant fluxSmoldering CombustionFlame SpreadSmoke Developed
Greater than or equal to 0.12 w/cm sq ftLess than or equal to 15.0 percent100
Environmental Characteristics
CorrosivenessFungi resistance
AcceptableAcceptable
Physical Characteristics
Density (settled)Thermal resistanceMoisture AbsorptionOdor emission
1.5 pcf3.7 R/in. (at 4 in. thickness)AcceptableAcceptable

Insulation Calculator

Build with confidence

Get an accurate estimate of how much SANCTUARY product you need for your next project.

Testimonials

Real customers. Real results.

See how Greenfiber cellulose insulation is helping contractors, builders, architects and homeowners create quieter, more efficient and more sustainable spaces. 

Eric Crane

Owner Advanced Thermal Concepts

Chris Little, CEO

eleV8 Builders

Kevin Campbell, Homeowner

We are LOVING the product. It is very clean and machine friendly, which is why we are probably getting better coverage.

Mike Cheschi

American Building Systems