U.S. GREENFIBER LLC INS541LD Fiber Insul 40FT Cocoon LW DUS

The product arrived just in time!I don't know if I'm entitled to rate this product, as I'm not using it for the purpose it was made. I use it to make paper clay and it's amazing!

Nice

I had a customer demand cellulose, I really wasn't that picky until I had to install it. If you have a real machine and not the DIY free one at the box stores or any 110v plug in machine(wimp machines), it fills the attic so full of dust you can't see what you are doing. Hard to get a constistant fill when you can't see even after I readjusted the blower. Here we have ducts in our attics....TX....stupid I know but hey, we retrofit we are not builders. Anyway, I always cover the duct system or any bridging such as "rat runs" "hogs troughs" "stiffbacks" whatever the term used where you are can be 2x8+2x8 which is 14.5" or beams that can be 16" or greater, or like I said duct systems. Good luck covering any of that with cellulose or keeping it covered once the stuff settles way down like it wants to do. I have now been in hundreds of attics and I can tell you the choices and what holds up the longest.....#1 best for very old installs, batts, but they are expensive, inconsistant, still itchy as hell, and just a pain to install so nobody uses them for ceilings anymore even though 50 years old they will still look fine. #2 Mineral wool or Loose fill fiberglass, it is glass so it doesn't age from the UV radiation or dissappear/settle bad because it is a glass fiber, another nice thing is retrofit you can easily find any air leaks because it is white or pink (not including the mineral wools) so you don't even really need the blower door to find the big air leaks. Most of the really old stuff down here gets trampled at some point because of rodents and the one lazy homeowner that didn't keep them out(except batts they actually seem to bounce back) Fiberglass increases it's R/inch when compressed, cellulose loses it. Yes you lose a bit of your overall Rvalue with the glass, but you gain R/inch so you don't lose much with fiberglass and the greater the lbs/ft3 of fiberglass the more airflow it retards. #3 Cellulose, for some reason it seems to either settle really bad or just dissappear. Don't know why, but there has only been one cellulose attic that I have seen where I thought "wow, that is holding up well over time" but it was only 12 years old. Cellulose when added as a retrofit really shouldn't be installed over fiberglass, but you can always install fiberglass over any other insulation so cellulose is not quite as versatile. Plus I can't seem to ever get as good as price for cellulose/Rvalue as I can with fiberglass, maybe that is just me, but it would have to be substantially cheaper to make it worth the extra headaches of trying to install it. When you have a paper mask even when it is cold down here, not only can you not see what you are doing, it plugs the mask in no time, I really don't trust boric acid which is like 30% of what you get when you buy cellulose, but I don't want it all over my mask, and I want to see what I am doing to get a nice even coverage. Cellulose will also plug the eaves and make it harder to keep a good airflow in the attic, it will also tend to plug the soffit vents, fiberglass is so light that when you blow towards the eaves the stack effect of the roof or wind seems to keep all of that clear enough (either way make sure you have baffles just in case). People that take it seriously one way or the other need to give up. I prefer fiberglass but like I said I am not going to tell a customer no over the issue. I give it two stars because it's not that bad, but still if you are going to choose one, choose fiberglass and for god sakes stay away from the spray foam, everybody knows your roof will leak at some point and I hate showing up with my thermal camera to try and locate the leak for the poor owners heating and cooling their attic. Fiberglass will bury your thermal bridging or duct system better, last longer, allow better ventilation at the eaves, let you find your air leaks later if you decided not to seal them before you insulated, is much easier these days to work around believe it or not they make it differently now so it is actually less itchy and nasty than cellulose honestly I can blow it in all day and get home forgetting I was even around it, good luck doing that with cellulose with finds its way into ever exposed part of your body. You will end up with much more plastic trash if you use cellulose bags vs. fiberglass you get way more product/bag with the glass, and it's glass, what do you think will last longer, wood fiber or glass fiber? Both are bad to breathe, but fiberglass won't become airborne near as easily it seems to land on the attic floor and stay there. Trust me, the 1# choice for attic insulation is glass and they will change with demand like they have before. Almost every business or product with "green" in the name is a sham, this is no different. Glass has recycled content too, and if they dont it comes from sand, not trees.Also Building Performance AnalystDeeper is better and glass lasts longer.

I had very little insulation in my attic so I decided to take care of this project myself and blow extra insulation. I heard is a relatively easy project therefore I went to my local home depot and the associate in building materials recommended me this product because it is recycled, we help Mother Nature, it is cheap, and so on.We ran numbers and determined that I'll need 40 bags to get an R48 or so. I packed 20 bags in my SUV and brought them home. I did the same for the remaining 20 bags. In my way I noticed that the SUV was feeling heavy and I felt the bags heavy as well carrying them around from the store to the SUV and from the SUV to my basement. Once all of it in my basement, I look at the 40 bags I was thinking that all of this weight may ruin my attic and damage the ceiling; it was certainly a lot of weight right there.I decided to investigate and checked home improvement related websites. I was horrified when I found that blow in cellulose is NOT recommended for attics because it doesn't expand and as a result you need to blow a lot of it which will sag and damage the ceiling. I verified this information with several websites. Again and again I verified the same. Finally I decided to call a friend of mine that is a professional contractor and he say that I would be insane if I blow this type of insulation to my attic because I'll damage the ceiling, it is too heavy even if the bag says "For Attic" which he considers is a nasty marketing tactic because is misleads homeowners.Enough information for me, I took the 40 bags back to Home Depot and decided to get blow in fiber instead. Curiously we calculated I'll need only 12 bags. Home Depot gives you the insulation blower for free if you buy 10 or more bags. I hired a Labor to feed the blower while I worked in the attic and I got my project done reaching a beautiful R-60 with only 12 bags of the super light Pink fiber glass blow in insulation. The best is that there is no risk of damage for my ceiling. I was so glad that I found this information just on time and correct my decision.

Was a great product.

The Geenfiber cellulose insulation contained glass chards and plastic bags. We could hear something making noise going up the blower hose into the attic. My son in the attic could hear what he thought were stones striking the rafters. And he saw shredded plastic flying out the hose. We didn't realize it was glass til we were finished and sweeping up the floor around the blower unit. That when we saw the shinny pieces of glass in the chunks of insulation laying on the floor. Greenfiber cellulose insulation is packed really tight in the bags. You have to use your hands to remove it in chunks to feed it into the blower. Lucky for us we didn't cut or slash our fingers. I have used a competitor's cellulose product in the past and never had this problem. STAY AWAY from GREENFIBER!