A.: Cel-Pak is a premium quality cellulose insulation.

A.: Cel-Pak is manufactured by National Fiber of Belchertown, MA.

A.: Cel-Pak is made primarily from over-issue newsprint, along with other high-quality over-issue paper sources, and carefully selected post-consumer newsprint, typically from paper drives. As just one example, if a New England newspaper printed 1,000,000 copies yesterday, but only sold 750,000, National Fiber buys the remaining 250,000 in bulk and turns them into insulation.

A.: There's a little more to it than that. The newspaper is first reduced to very small pieces in a machine called a hammermill, pieces just big enough to make out one letter from the original newspaper. In the next step, these tiny pieces are 'fiberized', that is, we go through another process that breaks them down to the component fibers of the original tree from which the newsprint was made. At this point, there's no resemblance to the original newspaper. Then a borate, a naturally occurring mineral, is added for fire, mold and pest control. Lastly, there is a tiny amount of mineral oil added, for dust control. The product is then bagged in 25 lb. bags.

A.: National Fiber works hard to ensure that our Cel-Pak cellulose insulation is the highest grade cellulose insulation product available. We actually hand sort the paper going into our product to remove metal bands, twine, glossy or coated stock (like coupons) - anything that shouldn't be in your walls. We also don't use mixed, post-consumer recycled material, which means that the product is dry and doesn't contain pieces of plastic bags, cans, or bits of somebody's leftover foodstuffs. What's the benefit?

For Homeowners	For Installers
Clean, sanitary product Consistent fire retardant absorption No non-insulating materials Premium quality	No trash to clog your machine You're not paying for plastic & metal trash Predictable coverage rates Less wear and tear on machine seals Less downtime & machine maintenance

A.: No, in fact just the opposite. The borate (a naturally occurring mineral) added to the cellulose fiber ensures that cellulose insulation won't support combustion. In fact, here's a picture of what happens when cellulose is exposed to flame, in this case from a torch.


The very top layer of the insulation chars instantly, and that char protects everything underneath it, including the hands of our initially reluctant designer, John, who 'volunteered' for this picture at the photo shoot. (There is no trick involved in the photo, but we do not recommend you try this at home. And you should never, under any circumstance, try this with fiberglass or foam based insulations - you'll get badly burnt.)

The simple fact of the matter is that cellulose will perform better and provide better protection in the event of a fire than any other type of insulation.

A.: You're not going to have that problem with Cel-Pak, because there have been two significant changes since the 'old days' of cellulose insulation.
 
First, the way the product is manufactured. Today's product is fiberized, which allows for increased coverage and lower settled densities.
 
Second, the machines and techniques to install the product have been greatly upgraded. It may sound like a simple job, but it requires a technically sophisticated, truck or trailer mounted machine to properly install Cel-Pak. It also takes specialty training to learn how to correctly install Cel-Pak.
 
So with today's equipment and techniques, Cel-Pak is 'dense packed' in the walls of your building at twice its settled density. In simple terms, that means that the wall or ceiling cavity is filled and is actually under slight pressure from the material. It can't settle because there is no space left for it to settle into.