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Owens Corning

Model # L38A

Internet # 100541755

Store SKU # 980518

AttiCat Fiberglass Expanding Blown-in Insulation System

This item has been discontinued.
The Home Depot no longer carries this specific product.

Was  $32.97
$29.68 /each

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  • Quick and easy to install, typical jobs take less than 4 hours
  • Free 24 hour machine rental with the purchase of 10 bags
  • Save up to 20% on cooling and heating bills year round




Model # L38A

Internet # 100541755

Store SKU # 980518

Store SO SKU # 583042

The attic is one of the easiest places to add insulation to improve the comfort and energy efficiency of your home. AttiCat Expanding Blown-In Insulation is designed for your attic insulation project in new or existing homes. The specially designed AttiCat machine conditions the insulation by adding millions of tiny air pockets that give the material its insulating power and energy-saving R-value over time. Blowing the insulation should take less than 1.5 hours and the whole job can be completed in less than 4 hours based on a 1,000 sq. ft. attic at R-30.

  • 1-bag coverage: R13 = 151.4 sq. ft. / R30 = 65.4 sq. ft. / R49 = 38.8 sq. ft.
  • AttiCat insulation maintains R-value over time and provides temperature and sound control
  • Self-feeding system provides complete coverage, even around pipes, wires and outlets
  • No mess, the insulation releases and expands completely inside machine
  • Minimum 50% certified total recycled content
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation calculator button

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Insulation Application Type 
Insulation R-Value 
Insulation Type 
Weight Per Cu. Ft. (lbs) 
Warranty / Certifications
ENERGY STAR Certified 
Warranty Information 


Rated 4.8 out of 5 by 152 reviewers.
Rated 5.0 out of 5.0 by Everything went very smoothly I put in 46 bales of insulation, 100 cubic yards of finished product. While I was doing it, I went for R60. It took 4-5 minutes of blowing time per bale, not counting air only blowing time to clear insulation off rafters, breaks, rests, etc. The machine worked perfectly. To keep insulation away from eaves, chimney, or non-insulation-contact rated lights, I used 1/2" rigid insulation board cut and duct taped to the needed shape. Be sure not to block air flow up from the soffit vents. My roof structure is made of trusses, so I put blue painter's tape around verticals to mark the depth I wanted. I did not use the rulers from Home Depot, but they would be good in an open space. The machine did not have a remote control (they said it did not work very well so they got rid of it). We used a set of walkie-talkies to coordinate between the machine operator on the driveway and the person in the attic. I got a piece of pipe for extended reach as someone had recommended, but never used it. I was usually bouncing the stream off the roof or shooting it up in the air to reduce the range. I could put material down up to about 15-20 feet away. I was amazed at how little mess there was around the machine when we were done. After 46 bales, there was probably less then 5 cubic inches of insulation pieces, which I vacuumed up with my shop vac. September 12, 2015
Rated 5.0 out of 5.0 by No brainer! DIY instead of hiring out. It is easy! My husband and I tackled this project yesterday! We rented the Atticat from Home Depot and purchased 10 bags to rent the machine for free. I fed the insulation into the machine while my husband operated the attic section. This was so much cheaper than hiring someone to do this for us. Wear the protective gear.. mask, suit, etc. Also remember to move the insulation away from canned recessed lighting. Our power bill has been high for sometime. We compared to the neighbor's and were shocked at the difference. We measured R-19 at the beginning and increased it to R-49 for a 2200 sq ft home. We needed to do this a while back. So glad we saw the commercials during the ball games on Saturday. Hopefully our power bill and wallet will be happy in the following months. October 5, 2015
Rated 5.0 out of 5.0 by Go for it! It was actually fun to use! Thanks to all those who left suggestions as all were very helpful! This was so easy overall and I spent less than half of what I was quoted by professionals for the same work. I loaded 10 bags in my SUV on one trip, and the machine & hose in another trip! I HIGHLY suggest getting a headlamp as it makes things so much easier. You definitely need goggles and a good mask too (just for the dust). Also - be sure the hose has the remote attached when you pick up the machine! My first hose did not and we tried working that way (texing to start & stop) and it was just a pain. I called the store to get the remote (which already should have been there!) and that made a world of difference! So easy to control to move around the attic as needed. It blew very fast & easy, and my helper said loading bags in the machine was a breeze too. He figured it was about 10 - 15 minutes per bag (roughly). I was amazed at how much coverage I had. Using your hand as a "deflector" when needed worked too. You do have to plan how to "back up" with the hose as you go because it projects a good distance. I actually had FUN with this DIY project! December 21, 2014
Rated 5.0 out of 5.0 by So easy! I absolutely loved this...I bought 15 bags (rental free for 24 hours with 10 bags) for 1000sf with about 1" of existing flat and nasty existing insulation. The machine was so easy to use. Bags loaded in easily, the hose was lightweight, basically everything about it was great. The insulation ended up going further than I thought. I ended up with about 18" in most of the attic (except the center where I plan on putting plywood down). After all that I only used 9 bags! I wanted to make sure I used at least 10 and my buddy loved it so much, we shot over to his house and blew in a few bags there. I highly recommend this and wish I had done it months ago!! 9 bags x $32 = $288 CHEAP! January 18, 2013
Rated 5.0 out of 5.0 by Easy Peasy After getting a quote for $2400 from Home Depot we decided to do it ourselves. Set up, operation and cleaning the machine was a breeze. Blowing the insulation went perfectly. Once I got used to the flow I was able to spread material smoothly. $650 to do 1600 sq. feet and that included paying a neighbor kid to feed the hopper for me. The only small issue we had was the connection between the two hoses. I would suggest duct taping the connection just to be safe. Other than that 2 hours and done! Saved us tons of money. July 7, 2013
Rated 5.0 out of 5.0 by Easy as pie I'll start thanking all those of you that wrote such convincing descriptions that this could be done easily by a DIYer. I will incorporate other's advice too. You'll need a truck to transport. I bought 20 bags (1700 sq ft house for an additional 33 R) and then you need to haul the machine. One mid size suv for the machine and two accords still wasn't enough for everything. Another trip back for the remaining 5 bags. You not only have the machine, but two large trash cans of hose. I don't think a broom handle attached on the end would be nearly as effective as a 3' section of 3" pvc I duct taped on the end of the hose. I can't stress enough that that was the trick. The insulation shot out wonderfully and I could direct it perfectly. Up close, I deflected off the ceiling. Another must. A halogen light, $10-15 at HD. A long extension cord. Lights up the attic light daytime. Ideally one person to feed the machine, one person in the attic pulling back excess hose/ light extension cord and to relay info the feeder guy. Buying goods, machine "rental", two trips to HD, blowing the insulation, and return of the rental in under 4 hours. Btw, an 1850 sq ft ranch w/ the attic access on one side, the 100 ft hose was sufficient. That's it. go for it. November 17, 2013
Rated 5.0 out of 5.0 by EASY, FUN and IT WORKS ...... but you will want to buy the $ 8.00 BAOOKA This product is great. We blew 44 bags into a 2000sq ft área on a ranch style home in about 4 hours. Hardest part (time consuming) was moving around over air ducts.. Here are my thoughts for you to consider on MUST DO´s. Each Project is different however this is what worked for me in a 30 yr old home. 1. Buy more bags than you think you need. You can always return the bags you don´t use as long as you use at least TEN for the free machine rentaL. I had to stop in the middle of the project, run to the store and get 10 more bags, which was a pain. 2. Spend $8.00 and get the BAZOOKA. Best money I ever spent. Buy a 10´section of THREE INCH PVC pipe. Have the store cut in at 6´, giving you a 6´and 4´section. I CAN NOT EMPHASIZE ENOUGH how much work this saved me. The 6´section allows you to direct and blow the material in specific áreas such as corners and get it where you want it. It also saves you from having to crawl so far back. The 4´ section is great for directing the material when you don´t need the distance and it is easier to handle. You don´t need to duct tape the hose, just slide it inside the tube about 6 inches and it will be fine. You can remove the hose from the tube immediatly if you need to shoot material closer. 3. A Strong direct beam light.aside from a drop light. A direct beam light works well to see how much material you have put in corners and 20´ away when using the 6´ BAZOOKA. 4. Two 2´x4´ pieces of plywood. Again, a few $ well spent. Home Depot might have some scrap you can buy really cheap. Instead of walking across rafters. placing these planks and using them to SIT and slide (leapfroging) really helps. You also have a place to SIT while you are blowing the material, especially when using the bazooka to blow material further back.into the attic. 5. TWO extra people. My local store said they quit using the remotes because they did not work well. SOOO, I had my nephew load the bags and my wife stood at the attic opening to relay instructions. 6. HALF A BAG, STOP FOR 15-20 SECONDS, then continue. I found really quick that the lag time allows you to stop and really see where more material is needed and the air blowing out the tube works well to gently even out what you just sprayed. Obviously you can adjust this depending on your specific Project. 7. EARLY IN THE MORNING. Because heat is a major factor in the attic, (For Dallas), we picked up the machine at 9pm the night before. We set it up, attached hoses, set up drop lights etc so we could start early. If you have enough lighting, you can do it in the middle of the night. The machine is not that loud. Again, this is Project specific depending on climate. 7. The normal safety equipment, protection for eyes, a Hood, long sleeve shirt, gloves etc. I hope my thoughs are of some use. I am NOT a Handy man. In fact, I am a disabled veteran and this is the biggest Project I have taken on since I got hurt. If I can do it, YOU can do it. GOOD LUCK ! April 26, 2015
Rated 5.0 out of 5.0 by R20 to R105. Huge difference! We recently went from 8 inches to 34 inches in the attic. I had to do some calculations because owen corning doesn't know R ratings above r60. 34 inches is between 105 and 110 due to the stack effect. Our house doesn't really fluctuate at all anymore. It has only been a week so far with temperatures fluctuating between 70 to 36 degrees everyday. In a few months I'll come back with an updated electric bill compared to last year. Remember... Your energy company will come do a free audit before you put insulation in, then they will come back and issue you a credit toward the install. October 27, 2015
  • 2015-11-26 T11:04:56.073-06:00
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