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Best Cellulose Insulation

Cellulose is a plant-based insulator and is the oldest form of home insulation.  At different times, it has been produced from sawdust, cotton, straw, hemp, and other plant materials with low thermal conductivity. 


Blow in Cellulose insulation is an environmentally friendly product made from recycled materials that are treated for fire resistance. Blown in Cellulose is commonly used to bring attic insulation up to required levels, as it can be installed over existing materials. Wet Spray Cellulose insulation is ideal for filling wall cavities and other enclosed spaces. Cellulose is resistant to fire, pests, and mold, which ensures a long lasting solution that won't lose performance over time.

Our Proven Process

  • Attic Inspection or Energy Audit

  • Identify problem areas 

  • Air Sealing and Can light covers

  • Duct work, sealing and encapsulation

  • Increasing Cellulose, Fiberglass  or adding Spray foam insulation. 

  • Increase R-value to R38-R49.

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Why Our Cellulose Insulation Is Different

SRP Preferred Contractor

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Energy Star Century Club Award 

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Stabilized Cellulose Insulation

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BPI Certified 

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Benefits of Best Cellulose Insulation

  • Average Energy Savings of 25%

  • Average Sound Reduction 50%

  • 75% Recycled materials

  • Environmentally Friendly 

  • More Resistant to heat conduction

  • Rodents hate cellulose insulation

  • Fire retardant

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Stabilized Cellulose

Stabilized cellulose is used most often in attic/roof insulation. It is applied with a very small amount of water to activate a starch adhesive. This reduces settling and decreases the amount of cellulose needed.

Cellulose Thermal Performance

The thermal performance of loose fill cellulose out performs other types of low cost insulation.  This doesn’t represent the whole picture of thermal performance. Cellulose is also better at slowing down air infiltration, convective airflows, and thermal bridging. Cellulose is very good at fitting around items in walls like pipes and wiring, leaving few air pockets that can reduce the overall efficiency of the wall. Dense pack cellulose can seal walls from air infiltration while providing the density to limit convection, when installed properly. Cellulose insulation lost 26.4% less heat energy over time compared to the fiberglass insulation. It also was shown to tighten the structure more than 30%. Real world surveys have cellulose performing 20–30% better at reducing energy used for cooling/heating than fiberglass.

How long will Cellulose Last

Cellulose is made primarily of recycled materials, however, cellulose insulation does degrade over time. The typical lifespan is 20 to 30 years, with degradation beginning as early as 15 years after installation. As with other types of insulation, severe weather or outside interference can reduce the lifespan.

Fire Retardant

Cellulose insulation is safe and code compliant. Cellulose insulation is one of the only types of insulation that you can melt a penny bare handed. Cellulose insulation is very dense. This density creates one of the best insulation barriers between a hot attic and a cool conditioned space. Cellulose insulation is a green product made of recycled materials and is one of the most cost effective insulation options.

Is your attic insulation lacking? 

On a hot summer day as attics can reach 140℉ or higher! This hot air then moves into your living space, creating uncomfortably hot rooms that are expensive to cool. In many homes, these overheated rooms are bedrooms, adding to the homeowner's frustrations.

In the winter, heated interior air rises naturally by convection and escapes into the attic through air leaks. A poorly insulated attic allows that heat to escape right out of the house, wasting your money.

The Department of Energy recommends homes in Arizona have 13-14 inches (R-38) of blown insulation. However, according to the Insulation Institute, an incredible 90% of homes are under-insulated.  That means homeowners everywhere are losing money and dealing with uncomfortable temperatures in their homes.

Cellulose Insulation
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5 Signs of a poorly insulated home. 

  1.  High Energy Bills 

  2.  Drafty home 

  3.  Hot/Cold room

  4.  Ductwork is exposed

  5.  Less than 10 inches of insulation 

Contact Thermo Shield if you are in need of air sealing, spray foam, blown cellulose, or any other insulation solution.  Contact us today to schedule a free estimate with your trusted local attic insulation company!

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