Denim Insulation

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UltraLine Denim Insulation is the successful combination of 35 years of insulation experience and a revolutionary patented manufacturing process that has created a superior and safe product.

UltraLine is made from high-quality natural fibers. These fibers contain inherent qualities that provide for extremely effective sound absorption and maximum thermal performance. UltraLine has No Fiberglass Itch and is easy to handle and work with. UltraLine contains no chemical irritants and requires no warning labels compared to other traditional products. There are no VOC concerns when using UltraLine, as it is safe for you and the environment.

UltraLine is also a Class-A Building Product and meets the highest ASTM testing standards for fire and smoke ratings, fungi resistance and corrosiveness. UltraLine Denim Insulation contains 80% post-consumer recycled natural fibers making it an ideal choice for anyone looking to use a high quality sustainable building material. UltraLine makes installation user-friendly.

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Photo References
Features & Benefits
Frequently Asked Questions
Video Introduction

Photo References

Features & Benefits

  • UltraLine does not itch and is easy to handle.
  • UltraLine is manufactured in oversized widths to ensure a tight friction fit and fill capacity.
  • UltraLine provides maximum R-value performance.
  • UltraLine is a Class-A Building material that meets or exceeds ASTM testing for both commercial and residential batt insulation.
  • The UltraLine patented proprietary process treats each individual fiber with a boron-based fire retardant. This treatment not only acts as a superior fire retardant, but also impedes the growth of fungus and mold.
  • UltraLine’s patented manufacturing technology creates a three dimensional infrastructure that traps, isolates and controls sound waves.
  • UltraLine offers an extremely high Noise Reduction Coefficient to effectively reduce airborne sound transmission including traffic, airplanes, radios, television, and conversation.


  • UltraLine contains no chemical irritants and requires no carcinogenic warning labels compared to other traditional insulation products.
  • UltraLine contains no harmful airborne particulates eliminating health concerns regarding particulates in the surrounding environment.
  • UltraLine contains an EPA registered fungal inhibitor to actively resist the growth of mold, fungi and bacteria.
  • UltraLine meets the extremely stringent Environmental Specification 1350 Indoor Air Pollutant testing used for California Public Schools.


  • UltraLine consists almost entirely of natural denim and cotton fibers that are 100% recyclable, reducing landfill waste. By weight, UltraLine maintains an 80% post-consumer recycled content.
  • UltraLine requires a minimal amount of energy to manufacture aiding the environment with energy conservation and reduction in pollution compared to other types of traditional insulation.

Frequently Asked Questions

Is UltraLine made from recycled blue jeans?
Yes, UltraLine is manufactured using post-consumer denim and cotton fibers that we source from various facilities. UltraLine contains approx 80% recycled denim and cotton fibers.
Do I need protective clothing to install UltraLine?
UltraLine has no fiberglass itch and is easy to handle. A dust mask is recommended for all construction work.
Is UltraLine Fire Resistant?
Yes, each natural fiber of UltraLine is saturated with a natural fire retardant (borates) giving UltraLine insulation a Class-A fire rating.
What are the perforations?
UltraLine contains several pieces per bag that are perforated for off-size cavity installations. Depends on the thickness require, and different quantity and area size for the bag packed.
Can UltraLine be installed in contact with recessed lighting?
Yes, UltraLine can be installed in contact with recessed lighting but the lighting MUST be IC Rated. An air gap of six inches would need to be left for non-insulated lighting cans.
What happens when UltraLine gets wet?
UltraLine is manufactured to breathe and accept/release the moisture it receives in a timely manner. UltraLine also contains active mold inhibitors as well.
Will mold affect UltraLine?
The fire retardant used in making UltraLine also acts as an excellent mold and mildew inhibitor.
Does UltraLine contain formaldehyde?
No, UltraLine does not contain any added formaldehyde or harmful irritants.


General Information

Because UltraLine Denim Insulation is compressed for shipping purposes, give it a shake prior to installing. This will help accelerate the natural rebounding properties of the fibers. Depending upon climate and environmental conditions, full rebound may take several days.

Install UltraLine Denim Insulation between the studs by simply fitting each batt firmly into place. UltraLine is engineered to fit standard 16″ O.C and 24″ O.C. framing with no additional sizing required. If you encounter an off-size cavity, either tear along a perforation or cut to create the proper fit. Your piece of insulation should be approx. 0.5″ wider and longer than the actual cavity. If building codes require a vapor barrier, it should be applied towards the living area after insulation installation.

Cut by scissors, the insulation to fit snugly around obstructions such as plumbing, vent lines, and electrical boxes. Use any left over pieces to fill small openings around windows and doors.


UltraLine Denim Insulation are a friction fit product. This means that they are slightly oversized for standard wall cavities. To install, merely insert the batt between the studding and tuck it in to ensure a tight fit. Approximate 30% of the batt’s in each bag of UltraLine to fit “off-size” cavities.


UltraLine Denim Insulation can be layered to achieve higher R-Values in ceiling applications. It is best to alternate the direction of the batt’s in each layer. UltraLine can be secured to the joists using either wire or a mesh. This will ensure the batt’s remain in place until drywall has been installed.

Floors/Crawl Spaces

UltraLine Denim Insulation is an effective option for insulating floors and crawlspaces as well. The insulation should be secured to floor joists or crawl space cavities in the same manner as ceiling applications, using either a mesh or wire support system.

Video Introduction