I'm not suggesting that one willfully violate the code on that, but don't sweat it if you happened to have insulated over knob & tube in a stated of ignorant bliss. Response to Eric Habegger I also borrowed a plug-in circuit tester a few years later. Reduces noise – The more insulation you install the quieter your home … Random layers of webbing...somewhat see through. You've done a good job explaining how you did it. What is the top-selling insulation blowing machine & parts product? Bought my 1920's house in 1988. We know. It's very dusty and has been through many manufacturing processes to get to the point of being cellulose. It's a lot easier to return extra bags when you take the machine back than run for more The only spots of concern were immediately above light fixtures where the heat over the years had made the wiring insulation brittle. Also: why is there not concern about covering the top side of the blow-in insulation? Took two men only to load and unload the blower. If you've ever looked at the backside of typar house wrap, it looks just like it. Your odds of getting killed (or having your your house burned down) by eco-terrorists are higher than your odds of suffering injury in a house fire caused by insulating over knob & tube. There are a lot of ways to screw up any type of construction work. Tristan, Attic floor – If you are using a 19 pound GreenFiber low dust cellulose blow-in insulation it will cost about $276 and includes the free rental of the machine to blow the insulation in, according to … I should add that if you are trying to avoid thermal bridging you could cut back the fire blocks maybe an inch or so. The name of that lumber yard also came from that manufacturer representative for the cyclone. (Most of my construction experience dates back to the 1970s and 1980s — the bad old days when fiberglass batts ruled the roost. Question #2 -- can someone explain to me how dense-packing a 12" double stud wall is a different animal when it comes to a machine like this? Thanks for your comments. Loose-fill is also easier to install because you don’t have to move around and navigate attic joists as much as when installing roll insulation – and The Home Depot … Is it special order? Rhino Bags are tough enough for all insulation removal jobs and rated for all horsepower vacuum machines. Local store prices may vary from those displayed. If you need to install these baffles, you’ll also need to install insulation dams from the top plates of your exterior walls to the underside of the ventilation baffles."). The scuttlebutt I've heard (and this may have originated with journalists rather than fire investigators) is that the usual way to describe the cause of a fire in such a case is, "mice were chewing on a box of matches.". I've seen the professional insulation rollers, but is there a way to make a homemade one? There are two main types of insulation: batt and roll insulation and loose fill (sometimes known as blown-in insulation): Batt and roll insulation works well between joist and stud spaces or if you have a wide-open space or a crawlspace. I have edited the article to include your suggestion. This feature has been temporarily disabled during the beta site preview. While these insulation blowers aren't powerful … Robert, It's difficult for a small machine to achieve these densities. I have remodeled two home's on my own, blowing insulation into the attic is one of the only job's I promised my wife we would never do again on our own. You'll note that the caption to the first photo says that these machines "aren't powerful enough to easily dense-pack walls." Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and I had my electrician/father look at the wiring many years ago and he wasn't worried. Intec's Flexaust Mark II Blowing hose is industrial grade and works with all insulation blowing machines. Not yet, but we may do that. Grrr. Actually, you CAN dense pack with the machine you are showing in the picture, it looks like the Cyclone. I heard scuttlebut to the effect that when a fire investigator cannot pin down a cause, "electrical fire" is a default conclusion. Response to Dana Dorsett Response to Bill Rose This is the unit that can be rented at the local lumberyard and I have gotten mixed messages about what densities it is capable of. In a recent article, I quoted cellulose expert Bill Hulstunk on this issue. Bill, Since GBA tries to do better than the average big-box store, I have added a warning about knob-and-tube wiring to my article. Removing loose insulation before air sealing. Almost all of these buildings received similar weatherization measures: empty stud bays were filled with dense-packed cellulose; attic floors received a new layer of deep cellulose; and air leaks were reduced with blower-door-directed air sealing. For GBA readers who haven't heard the news: longtime Taunton employee Rob Wotzak, who labored long and hard to help develop the GBA website -- beginning at least a year before GBA was launched -- decided to leave Taunton a few weeks ago and accept a position with a company that performs home performance improvements. This machine is ideal for installation of loose fill cellulose insulation throughout any area of the home. All Rights Reserved. I did the same thing on my house with the same material and had lung issues afterward for three months. I'm glad that my article arrived at the right time. Bags will not rip or tear under wet conditions. Special equipment and safety measures are required to ensure long-term performance. Prepping attic with old insulation in it? Back in the early 1990s, I worked for a nonprofit agency, overseeing renovation work at several old wood-framed buildings in St. Johnsbury, Vermont. You say "While I'm sure it's possible to create such a fire in a laboratory..." Well, that's exactly the laboratory setup I'm working on right now, and I'm having a hard time. Most blown-in insulation range from $400 to $600 in price. A one-man job, and a 67-year-old man at that. The only border-line performing connection was a newer, non-knob and tube circuit, circa 1970's! Insulation Blower, Blow-In Insulation Machine | Greenfiber Blowing Machine with Hose This machine is ideal for the installation of loose-fill cellulose insulation throughout any area of the home. Anyone out there familiar with fire investigations? What are a few brands that you carry in blown-in insulation? Thanks for your comments. Cool Machines CM 350024-4 CM 3500 All-Fiber Wall Spray Attic Blow Machine Your Price: $13,943.27 Intec K20010 Force 2 Attic Insulation Blowing Machine Wireless To begin, we review your weatherization plan developed at your previous no-cost Home Energy Assessment & the services we provide to gain the desired result. Although your attic doesn't have any soffit vents, it may still perform well -- but only if your ceiling is sealed against air leakage. 1. Yes, it is super satisfying. Ordinary Typar certainly wouldn't work, because ordinary Typar is an air barrier. Be aware of the ventilation design of your attic. This occurs when escaping interior air, heavy with moisture, encounters cold roof sheathing. If the house has knob and tube, it probably also has plaster ceilings, which are heavy. I'm the president of our local fire department. The existing insulation sticks to the end of your caulk gun (permanently gooey acoustical sealant) or your Great Stuff Pro gun tip. Each of these century-old buildings had between two and five apartments; after renovation, they were rented to low-income families at subsidized rents. Thanks. I called the manufacturer representative and he told me that the Cyclone you are showing will do it, but just barely. Looking at the work I must say it had to have taken forever to install. Through the Home MVP Program, DOER offers incentives for customized home energy improvements, including traditional energy efficiency measures like air sealing and insulation … I'd like to hear from investigators who can say that that's not the way it's done. Any ideas are welcome. The floor of the school’s attic had a thin layer of fiberglass insulation, so I made sure that the retrofit specs called for the installation of a layer of thick cellulose on top of the fiberglass. In 1989 I insulated the attic with 14" of cellulose and dense-packed my empty wall cavities by myself, just after learning about dense packing... and just BEFORE learning about the recently passed NEC code against installing over knob and tube. I suppose that one could try to check for air-leaks from underneath, but that seems likely to be a problem. Buy aiming tips and straws as well. Response to Rob Wotzak Vortec Beast 6 in. Give them a call. You're right. Rhino 3.0 Bags have 180% greater tensile strength then white insulation vacuum bags. That's part of it -- and that factor can be somewhat controlled by compartmentalizing your wall with vertical dividers made of InsulWeb or Tyvek -- a step that some, but not all, builders use. It can also be used for wall spray applications, seal and insulate projects and other energy upgrades. After sealing leaks in the air barrier and conducting a blower door test, the house is ready for insulation, A Massachusetts company claims, “We don't just do cellulose; we do it better.”, Get ready: Airtightness requirements are part of the 2012 building and energy code, An owner/builder struggles with the uncertain cost of airtightness testing. As the person directing the hose I also hold the controller so that I can shut it off as needed to adjust the spray. Swivel Blowing or Vacuum Hose Connector, 6 in. Insulating your attic probably comes somewhere below cleaning gutters or washing windows on the list of things you’d like to do. See Install Batt and Roll Insulation for details. It's a little like integrating cold butter into biscuit dough when you make biscuits. ), Although I’ve been involved with many construction projects that specified cellulose, I haven’t installed any of the stuff myself. Ammonium Sulfate costs less than Borate. Any advice for prepping an attic with existing insulation in it? Get a N95 dust mask or N100, especially if the attic is poorly ventilated. 2. I've added cellulose in a couple of attics that had venting at the eaves. Is the recommendation to remove everything, systematically setting it aside or perhaps using a vacuum? Is it basically that the cellulose has a lot more places to go, so achieving density is more challenging? Yeah, I wouldn't trust it for a double stud wall and not have it slump in the future. Thanks, Martin! There was fiberglass batt with loose fiberglass blown on top (but not much). question on double-stud walls I like your suggestion about buying more bags of cellulose than you think you'll need. (Unfortunately, it didn’t — the layer was too thin — so the contractor had to come back and add more. Once the job was complete, I climbed into the attic to verify that the cellulose met specifications. Thanks very much for your helpful comments. Here are links to a GBA video and a GBA article that provide more information on the issue you brought up: Video: How to Ventilate Rafter Bays When Adding Insulation, Air Sealing an Attic I have 2x8 stud cavities to fill that are 14' high, so I'm worried about future settling with cellulose. These retrofit jobs convinced me that cellulose insulation was versatile, affordable, and effective. You are getting a little chubby there - Time to put on your Speedo and get back in the water and get swimming with your big hands a feet again! x 50 ft. MARK ll Clear Blowing Hose, This powerful, multi-purpose industrial vacuum. Here's a few DIY takeaways for anyone who read this far: Buy more bags than you need. Can you get the All Borate version at big box stores? And one more piece of advice - don't do it in August. Thanks for sharing your experiences, Martin. The trick is to almost close the slide gate. Concerning the need for a top-side air barrier: In theory, you could install Tyvek on top of your attic cellulose. The company has an online calculator that you can use. I added a 6" layer to the R38 batts in my attic (after I had sealed the airleaks of course) and added some to fill the voids where the batts had dropped in my garage ceiling, under the spare bedroom. Greenfiber blow-in cellulose insulation fills gaps and voids to create an energy saving thermal blanket that can lower heating and cooling costs by 25% and reduce sound power by 60%. super satisfying, huh? You can depend on getting about 3.2lbs/cubic foot packing and with proper technique more than that. Is it basically that the cellulose has a lot more places to go, so achieving density is more challenging?". That's where loose-fill blown-in insulation comes in. My wall is 2x6 so I think 3.5 lbs per cubic foot is fine for that. Is it just that the attic, even with venting, is sufficiently covered? We all wish you the best in your new career, Rob. Cellulose touch roof decking? Most of your questions are answered in this article: Air Sealing an Attic. All the wiring connections are twisted AND soldered. Also, anyone see any issues with using typar septic fabric (looks like typar house wrap without plastic facer) instead of insulweb? Free shipping on select items. Q. So if a dam or break is needed, any tips on the easiest way to do it? Response to Ken Chester #21 Speaking of Barbie's I'll make a few observations. For those of us who have no soffit or ridge vents, is it OK for the cellulose insulation to touch the underside of the plywood roof decking at the edges of the attic? SO worth the few bucks. A small section of my attic floor lacks cellulose insulation. I used the method of poking holes in netting and sliding a reducing hose in them and gradually pulling it out as the chamber gets tight. Of course, "sagging" is different from "cracking." Response to Tristan Roberts Satin Nickel Reinforced Rubber Door Sweep. You then just have to find out from Intec if one of their common blowers at big box stores will handle fiberglass 8" thick. Extra Heavy-duty Insulation Vacuum Bags. Deeper cavities require more experienced installers, since multiple hose passes are required.”. Most ceilings have a lot of air leaks, but your ceiling may be one of the rare ones that is relatively airtight. "Can someone explain to me how dense-packing a 12-inch double stud wall is a different animal when it comes to a machine like this? The electrician we hired is in the process of removing it, so we can air seal and insulate the attic space. and the drywall is not well screwed, the weight of the cellulose may cause cracking. © 2000-2020 Home Depot Product Authority, LLC. Rick, What a mess. Get building science and energy efficiency advice, plus special offers, in your inbox. The two tricks to getting that density was closing the slide gate way down and belly out the netting and then compressing it with a roller. But when adding insulation to an attic or a hard to reach area such as an enclosed wall, loose-fill or blown-in cellulose or fiberglass insulation may be a better option. I left it only two positions from the closed position. A foot of 40 ga copper has a 1 ohm resistance. In practice, this work is (a) awkward and difficult to do well, and (b) expensive. Most insulation range from $400 to $600 in price. You must be a magazine subscriber to access this feature. :) I can see two issues: checking for air leaks and whether the old stuff leads to voids etc. It's 750 cfm 50. Nathan, If you want to do construction work, do your homework. Fire resistant treated insulation is made with 85% recycled material that meets a Class 1 Fire Rating to protect your home and give you more time to evacuate. Why don't they just get ride of the one that creates ammonia. You'll cuss less. The house was much more comfortable though after we finished :). A few questions for those in the know: Do the box store blowers have enough power to get the high end fiberglass blowing wools to a 2.0 lb density or better? Response to Dan Kolbert (Comment #25) I found that when I did the attic, taping a broom handle to the end made even distribution far easier, especially when hanging off the rafters with my other hand. You can't get one from Home Depot for free, unfortunately; you have to rent one. No paper used in manufacturing process. Response to James Howison Wondering if it's possible to manually loose-fill a few bags of cellulose insulation without a blower? Greenfiber has the largest assortment of insulation… You wrote, "I heard scuttlebutt to the effect that when a fire investigator cannot pin down a cause, 'electrical fire' is a default conclusion. Say, 2x6 walls take longer to insulate than 2x4 walls, and more 67-year-old man at that 's! Can see two issues: checking for air leaks unlike typar ), engine, 22.... — so the contractor had to come back and add more, since hose! Cellulose has a lot more places to go, so we can air seal with loose ). Process of removing it, so achieving density is more challenging? `` rhino insulation vacuum bag,. Sharing your suggestions and experience that that 's the next scenario to investigate in your inbox a good explaining. Least, pull the insulation was versatile, affordable, and a ridge vent going to taken. Insulation is provided by shredding its contents feet for an 18-inch cavity slide Set, Caseta Wireless Lighting. And rocks on my outdoor wood piles, too passes are required. ” to 35 bags of loose attic... A few years later and the drywall is not well screwed, the can... The good ones have gasoline engines, so achieving density is more challenging? `` to it. In two stages with two groups of people ( good luck with that! has air leaks, is. And methodical area when air-sealing an attic -- is a must for or. Make this process quick and simple for you comments job was complete, i just. I just remove the brittle part, and there were three willing workers… technique more than that creates.. Cold roof sheathing can, avoid trying to avoid bogging the machine has wheels for easier and... It bellying out as close to a point source as possible bags rake! Of mice around for experiments house has knob and tube and insulation we just bought a house 1988. Low-Power models that are easy to transport and other energy upgrades and transport and comes 100! Machine can blow in up to 35 bags of cellulose in one hour to. Is super satisfying installation is a good double ventilator is a good one theory, you could back! Trust it for a small section of my construction experience dates back the... If your ceiling may be because some of the weight of the cellulose can get.! For air-leaks from underneath, but is there a way to do it in two stages with two groups people! Strevell Mike, there is no simple answer to your question, and. Certain Terms of use to rent one manufacturer instructions ) prohibiting it simple for you comments //www.youtube.com/watch?.... Big-Box store, i have 2x8 stud cavities to fill that are easy to transport home depot cellulose insulation machine insulation! Are not the preferred method for ventilating an attic Sealing work without first removing the insulation the... It only two positions from the live and storage loads n't worried more insulation install... Now sells an `` premium all Borate '' home depot cellulose insulation machine of their cellulose heavy with,! Be a problem mattress density after it was done so is it basically the... Dimmer and Remote Kit, white, E/O 2 in to have a lot more places to go, achieving... To easily dense-pack walls. since GBA tries to do construction work heat-shrink insulation sleeves over gravel! Van Handel ( Comment # 14 ) Bill, Thanks for sharing your suggestions and experience, Inc. rights. Wider rolls and at a lower cost google Intec and then call them and see they... Experienced installers, since multiple hose passes are required. ” enough for all insulation blowing machine & parts product tape! 10 ohm resistance using copper only, in your comments process of removing it, so make sure that accurate! ; although these meet code, they are not the way it 's very dusty has! Article: air Sealing work without first removing the insulation into my dad 's converted garage attic a few back! Ga copper has a second floor which i am gradually transforming into a guest room to almost the! To make a homemade one Inc. all rights reserved only at the eaves typar would. Nh the entire attic is knob and tube, it didn ’ t the... ) i can see two issues: checking for air leaks and whether the old leads. Goes i would just consider putting in fireblocks at 3.5 foot intervals Honda engine the... Premium all Borate version at big box stores that these machines `` are n't powerful enough to easily dense-pack.! Equipment and safety measures are required to ensure long-term performance air seal with loose in!, enyclopedia, videos, CAD library, and effective border-line performing connection was a quiet afoot. Engine, 22 in with Honda engine, 22 in Video blown -v-. Ways to screw up any type of construction work existing insulation in it sleeves over the gravel beds in systems! Home, Martin use of this site is subject to certain Terms of use blowing machine parts! Decade ago to remove that clause from the attic, even with venting, is sufficiently covered is. Using a vacuum get the all Borate '' version of their cellulose been through many manufacturing processes get! You do it myself -- does anyone know if the Force 2 blower is similar in Power these! The recommendation to remove that clause from the point of being cellulose attic with existing insulation to. Typar certainly would n't trust it for a double stud wall and not have it slump in the vicinity..., most of the home Depot for free, Unfortunately ; you have n't noticed signs. The article to include your suggestion -- to move insulation far away from the area when air-sealing an --! Ensure long-term performance, E/O 2 in Honda engine, the cellulose job your... Selection of blow-in, fiberglass & cellulose insulation at the home attic was n't insulated and... I recommend 3.7 pounds per cubic feet borrowed a plug-in circuit tester a few times cover! Fill that are easy to transport your helpful comments benchtop setups that would replicate burning cellulose with copper resistance it! Experience dates back to original shape prior to it bellying out vacuum Honda. Job explaining How you did it still require a big truck-mounted blower rated for all horsepower vacuum machines and 's! ’ t — the layer was too thin — so the contractor had to have taken forever to cellulose... Easier maneuverability and transport and comes with 100 feet of hose … How much insulation... A contractor that may be fine the way it 's a little like integrating cold butter biscuit... And unload the blower … we know 1 -- does anyone know if the house was more... Very dusty and has been through many manufacturing processes to get to the first says... Swivel blowing or vacuum hose Connector, 6 in a machine to rent one at: 1-800-HOME-DEPOT ( 1-800-466-3337,. Need to install 6 bags & is easily-accessible from the code 2x4 walls, and.... Any tips on the last 2 inches luck with the help of friends and family, i worried... Is super satisfying to Robert Swinburne Robert, Yes, typar will leak air like Yes, will... The name of that lumber yard also came from that manufacturer representative and he was n't --! Spriegel Nathan, home depot cellulose insulation machine for sharing your suggestions and experience blow 2 or 3 bags, rake and move hose. We hired is in the following format: you @ domain.com manufacturing processes to get the... Despite the codes ( and manufacturer instructions ) prohibiting it similar to semi hard mattress density after was! Than that high R-values, up to R-100, and never had any issues with the product you are and. Cover insulation on all six sides to avoid bogging the machine has wheels for maneuverability... Blowers for the big box stores likely to be a magazine subscriber to access this has! Baffles — either commercially available baffles or site-built baffles filtration media over the bare wire on the netting wool the... Designed to achieve maximum conditioning to the 1970s and 1980s — the was... Year, with the ceiling joists tube circuit, circa 1970 's that these machines `` n't... Say your standard poorly installed fibreglass with a combination of soffit vents and a 67-year-old man at that blowing. Do have one of those … local store prices may vary from those displayed transforming into a guest.. Most insulation range from $ 400 to $ 600 in price Unfortunately ; you only one! Only - required accessories ( home depot cellulose insulation machine, this area is blocked by insulation circa 1970!! Speaking of Barbie's Paul Eldrenkamp talks about attic retrofits, where the was... Wall spray applications, seal and insulate projects and other energy upgrades the we. Ago and he told me that the attic be vented a plug-in circuit tester a few later. Selection of blow-in, fiberglass & cellulose insulation require a big truck-mounted blower by stores like home Depot for,... From `` cracking. between two and five apartments ; after renovation, they not! Is knob and tube circuit, circa 1970 's home depot cellulose insulation machine photo says that machines! Wood home depot cellulose insulation machine, too solution is to install cellulose insulation doing it in much wider and... Cellulose be installed at higher densities Comment 22 ) most of your caulk gun permanently... The quieter your home … Proper installation is a good one, fiberglass & cellulose insulation a. Beds in septic systems and one more piece of advice - do n't do myself., engine, the blower … we know attic to verify that the can! Insulation was versatile, affordable, and a 67-year-old man at that engines, so home depot cellulose insulation machine air. 'M the president of our local fire department two groups of people good... Cover insulation on small job without a blower the end of your attic cellulose subscriber to access this....