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Old 06-24-2014, 11:03 AM   #1
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So annoyed with blown in cellulose


We did blown in cellulose in the attic a few years ago after doing a full clean out, re-wire and air seal. The tall joists were covered about an inch deep (they are 2x12.)

I did the back of the attic and then the front, and noticed a HUGE difference in the insulation as we went. When I started, there was very little dust, the insulation just kind of poured out of the hose in an arc, like water. After about half of the job was done, the insulation was suddenly extremely dusty and the attic filled with clouds of insulation. The brand and type of insulation was the exact same.

I was up in the attic last night (I never ever ever ever go up there.) and all of the insulation has settled a bit, which is expected. However, the insulation that I started with, in the back of the house, is barely "dipping", the insulation in the front of the house is now barely half way up the joists.

So, that means I get to do it again... fan-freekin-tastic.

How do I ensure this doesn't happen a second time? Weigh the bales and not use any that seem light? The only thing I can think of is the second half of the order was packed incorrectly. Yes? No?

Original attic thread:
1400 sq/ft of basically uninsulated attic

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Old 06-24-2014, 11:26 AM   #2
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So annoyed with blown in cellulose


I had my done professionally (the only thing in my house done professionally). To buy the insulation and rent the blower was about the same price as the pros charged. The guy who did it was from a local lumber yard.

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Old 06-24-2014, 11:30 AM   #3
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So annoyed with blown in cellulose


Was the air mixture the same throughout the entire job?

There was a few settings on the machines that I ran in the 70s, to change the mixture from walls to attics, to floor.

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Old 06-24-2014, 11:53 AM   #4
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So annoyed with blown in cellulose


Back when I was in business I had the insulation installed in a lot of the houses, most of the cellulose insulation that I ever saw had a watery glue added to dampen it so it would stay in place, especially the walls, maybe the bales you had were dried out or the machine didn't add the moisture/glue.
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Old 06-24-2014, 12:15 PM   #5
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So annoyed with blown in cellulose


I have no idea about settings, I wasn't running the blower; I was in the attic the whole time. If I'm remembering correctly I stopped working and said "did you change something? The last bag was really dusty." And he said that he was just opening them and dumping them in.

No, there was nothing added to the insulation, just blown in gray stuff.

Price wise, there was a HUGE difference between us doing the work and paying someone. Our materials just for the insulating were around $1,500. The lowest quote we got was in the $4,000 range.
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Old 06-24-2014, 03:20 PM   #6
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So annoyed with blown in cellulose


Blower settings and mix rates can do this as well as a bad blower.

Sorry you are dealing with this.
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Old 06-24-2014, 03:35 PM   #7
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So annoyed with blown in cellulose


It's not the end of the world, just another expense that I didn't want and something I just don't want to deal with. After the roof is done (we're having someone else do that) We'll get another 15 bags and put down another layer. Just what I want to do at 7 months pregnant....
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Old 06-24-2014, 03:47 PM   #8
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So annoyed with blown in cellulose


Stop by a temp service, and get a young clean cut kid to do this for you, Yes it will cost more, but worth it If you think of the consequences that D I Y can have on your unborn.

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Old 07-02-2014, 01:15 PM   #9
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So annoyed with blown in cellulose


See if the roofer will do it. Most roofing companies are not proficient when it comes to air sealing and the finer points of this stuff, but a "blow and go" application of insulation is not out of the ordinary.
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Old 07-02-2014, 01:33 PM   #10
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So annoyed with blown in cellulose


Quote:
Originally Posted by HomeSealed View Post
See if the roofer will do it. Most roofing companies are not proficient when it comes to air sealing and the finer points of this stuff, but a "blow and go" application of insulation is not out of the ordinary.
That's not a bad idea, since they'll be up there cleaning up anyway! It's already completely air sealed, I did that myself.

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