Blown In Insulation


Knauf Insulation EcoFill Wx blowing wool

insulation is an unbonded, virgin fibrous glass

blowing insulation having a high degree of

post-consumer recycled content, designed for

weatherizing and retrofitting existing housing.


Knauf Insulation EcoFill Wx blowing wool

insulation is used to dense-pack sidewalls

using the drill and fill technique common in

retrofitting homes or in home weatherization

activities. EcoFill Wx blowing wool insulation

is also excellent for doing open blows in

attics. This means that only one product is

needed to complete an insulation retrofit/

weatherization project.


Excellent Thermal Properties

• Fills all gaps and voids in wall cavities,

creating a thermal barrier against outside air

and better temperature control

• Greater resistance to air infiltration than

cellulosic materials

• Resists heat flow with an R-value

of R-15 in 2 x 4 construction and

R-23 in 2 x 6 construction

• Absolutely will not settle in walls

• Will not change from its intended R-value

over its lifetime

Saves Warehouse and Truck Space

• Requires about one-half of the warehouse and

truck space of competing cellulosic products

Better Coverage than Cellulose

• More than 2x the coverage per bag


• Contains a high degree of recycled glass

verified every six months by UL Environment

Improves Crew Productivity

• Installers spend less time handling bags

In a 2,000 square foot home, about 46

bags of EcoFill Wx blowing wool insulation

are required, compared to 145 bags of

cellulosic material

• Installs cleaner than cellulose,

virtually dust-free

• Blows clean and smooth and does not

require stabilizing

Strong Poly Bag Packaging

• Packaged in a very strong poly bag that

prevents bag breakage and jobsite spillage.

The bags stack well and have a coefficient of

friction sufficient to reduce slippage.


• Fiberglass is naturally non-combustible and

remains so for the life of the product. Unlike

cellulose, EcoFill Wx blowing wool insulation

requires no additional fire-retardant chemical

treatments. Unfaced fiberglass insulation

is recognized by building code groups as

an acceptable fire stop in residential wood

frame walls.

Air Infiltration Resistance

• When tested against three cellulose products

using ASTM C522, EcoFill Wx blowing wool

insulation showed 20 to 100% better air

flow resistance than three leading brands.

(See table)

Noise Reduction

• Improves Sound Transmission Class (STC)

ratings by 4 to 10 points, with a 3 point STC

change being a noticeable improvement


• UL Environment




• ASTM C764; Type I

• HH-I-1030B; Class B Certified

• Meets the Quality Standards of the State

of California


The stated thermal performance of EcoFill Wx

blowing wool insulation requires installation in

accordance with the manufacturer’s instructions.

Failure to install the material properly will

impact the performance of this product. This

product must be installed according to the 

Learn More

Fiberglass Insulation is a superior  product for attic insulation for many reasons.  

1. Longevity

2. Cleanliness

3. Interaction with Moisture


Multilayer Reflective Insulation


Ecoshield reflective insulation is used in conjunction with traditional insulation to reflect radiant heat. Traditional insulation works primarily on conduction and convection heat transfer.  Ecoshield completes the thermal dynamic equation by reflecting radiant heat. Made from 99% pure aluminum this product reflects 97% of radiant heat back to its source.  The core of this revolutionary product is made from recycled plastic that has been baked to over 1000 degrees to remove the risk of fire acceleration.  This plastic is then shaped into a closed cell honeycomb technology which is then perforated so that the blanket can neither hold or trap moisture .  

Learn More

Like many technologies we use today the origins of MLI are rooted in the NASA space program. MLI is utilized on the international space station.  You can see how by watching this excerpt from the History Channel.