Professional Cellulose for Cellulose Professionals

National Fiber Links


Spray Foam Insulation & Long Term Thermal Insulation Values
From High Performance Building Supply's blog,"Polyisocyanurate (polyiso), XPS and spray closed-cell foams substantially degrade over time as the insulating blowing agent gases diffuse out and plain air diffuses in. How much does it degrade and at what rate?"
HP Building Supply Blog Post on Foam's Thermal Degradation

Lawsuits Name Makers of Spray Foam Insulation
From Scott Gibson at,"Federal lawsuits claiming that spray-polyurethane foam insulation is toxic and can sicken those who live in houses where it has been installed are pending in more than a half-dozen states as lawyers deal with an “avalanche” of complaints, a Florida attorney says."
GBA Article on Spray Foam Lawsuits

Dense Pack Cellulose Installation Techniques Video from Building Energy 13 Conference
Here's a 'short course' on installing dense packed cellulose in wall cavities, presented by National Fiber's Chris White, Director of Sales, and Bill Hulstrunk, Technical Manager. This video was recorded during NESEA's Building Energy 13 conference in Boston on March 6, 2013.
The Basics of Installing Dense Pack Cellulose

Check out National Fiber's New Insul-Cube Rim Joist Insulation System
New for installers of Cel-Pak cellulose, National Fiber's Insul-Cube Rim Joist Insulation system. Fast, easy and efficient! Replace ineffective fiberglass, and skip the messy foams.
Insul-Cube Rim Joist Insulation System

Profile of National Fiber
An excellent article by the Daily Hampshire Gazette of Northampton, MA, about National Fiber (Free registration to view article may be required.)
National Fiber -

ARRA Weatherization Assistance Program Results: 775,000 Homes and 14,400 Green Jobs The $5 billion the federal government authorized for the Weatherization Assistance Program (WAP) in 2009 exceeded its goal in weatherizing low-income homes in 50 states, but the program is threatened by a huge budget cut for fiscal 2013.
National Consumer Law Center (NCLC) Report on Stimulus Funded Weatherization Program

Green Building Advisor interview with Bill Hulstrunk, insulation expert and National Fiber Technical Manager, providing detailed instructions for blowing loose-fill cellulose on attic floors and dense-packing walls.
Green Building Advisor

Green Inc. Blog profile of National Fiber in The New York Times!
NY Times Green Inc. Blog

Preferred Building Systems of Claremont, NH, manufactures high quality modular homes that are energy efficient and built green with National Fiber's Cel-Pak!
Preferred Building Systems

The 2010 New American Home is a Showcase of Green Energy Technology - including Cellulose!
CIMA Video of the 2010 New American Home

Cellulose Insulation Manufacturers Association (CIMA)

The International Erosion Control Association Marketplace features National Fiber's Hydro-Spray mulch product.
IECA Marketplace

Northeast Sustainable Energy Association (NESEA)

Conservation Services Group (CSG)

Clean Energy Center (CEC)

Rate It Green

The Center for Ecological Technology (CET)

Efficiency Vermont

Building Performance Institute (BPI)

Bensonwood Homes


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