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Old 09-30-2009, 09:51 PM   #16
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The rafters are TOTALLY uninsulated. So I would be adding the reflective insulation to bare naked rafters. The installer guy didnt seem to think that was a problem. He said that kind of install along rafters was ideal and recommended.

I'm going to buy a real ladder this weekend so I can go up there and walk around and investigate further. I do not know if any vapor barrier is up there, as well as any baffles. This foreclosure was built in 1974 and seems like everything is original in here as the previous 3 owners did absolutely nothing in the way of upgrades. I honestly beleive this blown in insulation is original as well. Currently I only have a 4 foot stepladder right now and I can only stick my head up to glance at whats up there. I will be back with detailed findings...
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Old 10-06-2009, 09:43 AM   #17
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Update: I totally scrapped the idea of installing reflective. I have had not one but 3 insulation professionals tell me its not worth it here in the northern region. 2 of which actually sell the reflective themselves. I'm from Miami, so I guess I still have the sweltering Miami sun on the brain.

I also scrapped the idea of doing it myself. I am having 14inches of cellulose blown in on Saturday. They use Applegate insulation, which looking at their web siteseems to be a good product. They have already prepared me for the dust factor. I got a really good rate at 0.89 per sqaure foot which tops the $1.25/foot rate that Home Depot was giving me for blown in fiberglass.

Thanks for all of the great suggestions and help! I have another fish to fry now... My neighbors, who I share a common wall with, found they had bats in their attic. LOTS of them. They just paid someone 1200 this weekend to rid them of the bats and the remaining 2 feet of bat poo left in their attic. Hopefully they don't come running into MY attic!
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Old 10-06-2009, 09:50 AM   #18
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They didn't sell the bat guano ? Great fertilizer so I hear
Sometime hiring it out is the best option
Heating season is about here
I need one more trip to the MIL's to finish her attic



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Old 10-06-2009, 10:34 AM   #19
 
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I had to add insulation to the attic of one of my Rentals. I just used the blown in style. It is much easier in my opinion. You dont have to rock around as much up there as it shoots out of the hose quite a way.

Just make sure whichever route you go to make sure the venting is not blocked.

Where I am from there is not much differance in price from blown in insulation and batts ( if I do it myself that is).

Iether way it is a fairly simple job, however it is hard on the back....bending and twisting up there. The blown style does make it easier tho.
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Old 10-06-2009, 10:40 AM   #20
 
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Oh one thing to mention if you are hiring it done....make sure (in writing) they dont cover the vents.

When I looked into it up here in hiring it done and I inquired about making sure they dont cover the soffit vents or installing a cardboard barrier to keep the insulation from getting blown into the vents....they said they dont do that, it is up to me.

I figured if I am going to have to climb up there to the very edge of the roof to protect the vents....why in the hell would I pay someone to pop a hose in the attic and blow insulation around. That is why i ended up doing it myself.

Perhaps where you are from they will make sure they dont cover the vents and take precautions, however like i said earlier get it in writing, or you could end up with no ventilation up there and a whole mess of problems.
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Old 10-06-2009, 11:43 AM   #21
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The guy I ended up going with told me that there is no ventilation in the soffits in my attic so he will not be doing anything but blowing in the cellulose. My gutters are pulled close up to the edge of my townhouse. My roof has attic fans installed apparently.

The Lady from the other larger insulation company said the same. She said some homes do and some homes dont.
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Old 10-06-2009, 03:50 PM   #22
 
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I am from up in Canada, and it may be differant here, however up here attics need ventilation. It helps get rid of extra hot air in the summer (which eventually pushes down into the house), and it helps get rid of moisture and condensation - wich creates tonnes of problems...wet insulation...mold...rot, lots of ugly stuff.

Check with some building officials down there in your area and they can let you know if they are needed or not. Like I said it may be differant down there.

If they are needed, I assume they can be put in later on through the roof or gable ends. Perhaps a whirlybird even --thats the name believe it or not. It is a metal fan like contraption that goes ontop of the roof...wind turns it and it creates some ventilation in the attic.

good day eh
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Old 10-06-2009, 05:38 PM   #23
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Well..... start here: http://www.buildingscience.com/docum...on?full_view=1
Then to the no-soffit vents: http://www.cor-a-vent.com/in-vent.cfm
And on to some problems with some fans: http://www.ronhungarter.com/black_mold.html
Be safe, Gary
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Old 10-07-2009, 06:49 AM   #24
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Long before I would scoop out insulation to add a vapor retarder, I would head to the local paint store. You can pick up a low permeability interior finish and paint the ceilings. Then you will have a vapor retarder that's continuous, in the ideal place (as close to the interior side as possible) and you'll have a new finish on the ceiling.
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Old 10-07-2009, 09:16 PM   #25
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Quote:
Originally Posted by rahfiki View Post
Perhaps a whirlybird even --thats the name believe it or not. It is a metal fan like contraption that goes ontop of the roof...wind turns it and it creates some ventilation in the attic.

good day eh
This is what my roof has now. 2 of them that move when the wind blows. I can see them from the parking lot on top of my roof.
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Old 10-16-2009, 04:54 PM   #26
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k not to hijack the thread but im gonna anyway---if the ceiling is lathe and plaster is a vapor barrior needed for blown in cellulose?
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Old 10-17-2009, 09:57 AM   #27
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The issue of whether or not to install a vapour barrier, where and of what kind depends mostly on where you live. Not knowing that means no-one can answer for sure.
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