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Old 12-09-2007, 03:09 PM   #16
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They had rock wool, with paper on each side and "Called" it insulation,,,sorta the forerunner of modern fiberglass. It was pretty iffy stuff,,,but better than nothing and fuel was cheap!! Attics about that time had 'zonolite' in them!!

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Old 12-09-2007, 03:51 PM   #17
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When I posted this same question in a different topic, one of the guys said that if you blew insulation in on the inside, you might have to worry about condensation and then maybe mold. I believe he said moisture between the paper and the blown- in could happen.?
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Old 12-09-2007, 05:06 PM   #18
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Originally Posted by timber View Post
When I posted this same question in a different topic, one of the guys said that if you blew insulation in on the inside, you might have to worry about condensation and then maybe mold. I believe he said moisture between the paper and the blown- in could happen.?
Wayne, It is possible, but I highly doubt it.

If I was in your shoes, I would call a local insulation company and see what recommendations they have.
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Old 12-09-2007, 07:09 PM   #19
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Thanks for the imput on this, I'll take my chances with the moisture. Who the hecks Wayne?
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Old 12-10-2007, 10:05 AM   #20
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I would think it imperative to know' which side of the cavity it is fasted on??? If its the wall side,blow it from outside,,if it was applied over studs then outside sheeting applied then inside is only practical way,,,AND if its stapled the the center of the stud,,,blow from outside and dont worry about ruining anything,,not much there to ruin!! The NEW stuff will do the bulk of the work!!
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Old 12-10-2007, 10:30 AM   #21
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That's the kicker! This stuff is just freestanding inside the wall cavity! It's not tacked to anything! I even checked this theory in several different places in the home. Who built this friggen home!? (No, actually it is a pretty nice home, I'm just gettin frustrated)!
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Old 12-10-2007, 10:51 AM   #22
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That's the kicker! This stuff is just freestanding inside the wall cavity! It's not tacked to anything! I even checked this theory in several different places in the home. Who built this friggen home!? (No, actually it is a pretty nice home, I'm just gettin frustrated)!
Ohl, I was under the assumption it was stapled to the inside studs.
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Old 12-10-2007, 11:39 AM   #23
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Considering the year your home was built, and it's lack of insulation, you might consider delaminating all of the interior perimeter walls, reinsulating, and rewiring. Many HOs who purchase 60-70's vintage homes, when modern conveniences such as adequate insulation, good windows, and adequate wiring were in their infancy) they're known to gut them.

Blown in insulation can be done correctly, but I'd never trust a company to employ someone who would. AFAIC, these types of home improvement outfits are really scams, like basement waterproofers.
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Old 12-10-2007, 12:14 PM   #24
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I did consider removing the drywall on the outside walls of these two bedrooms, but the walls are in excellent shape, in fact, you would'nt believe how thick this drywall is. They put 2- 3/8'' sheets together and installed it. This is the original stuff, was that common back then? Anyway, this is my whole reason for just wanting to add a little blown-in.
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Old 12-31-2007, 11:27 PM   #25
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Old thread i know but timber i just wanted to say that i am in the same boat as you. Same 1-1.5 batts in my walls stapled and pushed to the back. I just finished drlling holes in each stud bay of every room in my home; a 1950s cape. I even drilled in the first floor ceiling to reach all around the entire rim joist. In many areas i found wall bays with just nothing at all and even open to either the attic or garage attic space! Kneewalls with nothing behind them etc....
I have a large eyebrow roof going the length of the 2nd floor, i cut access from the garage below and found 1x6 sheathing with gaps btwn them and actual holes. That is basically the back of the wall for half the 2nd floor. The sheathing directly behind my bathroom had a 5x5 inch hole with a thin batt covering the hole. I pushed it to find i can reach in with my whole arm around and under my shower stall. So im air sealing where i can with foamboard foam and caulk, but i am going to blow in insulation to my walls. If you do it dont use a nozzle but get a long 10 ft vinyl fill tube . That way you will get better coverage as you can snake it past the old stuff there. In many areas I got by with just drilling one hole per bay depending on the framing.
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Old 01-01-2008, 09:20 AM   #26
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Thanks jaw22, that idea about the tubing sounds like it would help considerably. Are you talking a 1'' dia. tube?
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Old 01-01-2008, 11:07 AM   #27
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I have a 1" dia and a 1-1/4 inside dia tube both 11 feet long. I got the 2 sizes cause i was worried i wouldnt be able to snake in the larger one depending on the space in the bays. But they both work as far as me probing into each hole goes. The reason I got them so long (11 feet) is because I am also going to be blowing in my garage ceiling that has a room above. Theres only 2 inch batts in 2x12 joist spaces with it resting on the ceiling not up against the subfloor. Here is where I got them http://www.jrproductsinc.com/hose.html
Also here are some links on how to do wall insulation right. Most of it talks about doing it from the outside but its still some good info.
http://www.karg.com/PDF%20files/Insu...ald%202003.pdf
http://www.karg.com/PDF%20files/Insu...d%20Biddle.pdf
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Old 01-01-2008, 12:42 PM   #28
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Thanks a lot!

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