soffit vent chutes and blown in insulation...... - Homesteading Today
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Old 11/27/08, 09:35 AM
 
Join Date: Jun 2008
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soffit vent chutes and blown in insulation......

Need help. I intend to insulate my garage soon. I know I will have to install vent chutes so that the soffits are not plugged. However, there is some chutes already installed. However, there is some space between the chute and the bottom of the ceiling jost joist...maybe 3 inches. My issue is do you think some of the blown in will slip under the chute and a go into the soffit region or do you think that its so thick that it will more or less plug that up...which is what I'm hoping? Hopefully this makes sense.

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Old 11/27/08, 09:41 AM
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Join Date: May 2006
Location: Manitoba, Canada
Posts: 1,110

you could block the space with a little piece of cardboard or styrofoam, just to be safe. I don't think it would have to be sealed airtight, just enough to keep the loose insulation from spilling into the soffit. A bit of old window screen might do the trick as well.

so long as you don't blow the airflow from soffit through the chutes, you should be fine.

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Old 11/27/08, 10:32 AM
 
Join Date: Dec 2002
Location: East TN
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Didn't install anything. As you blow the insulation you can bank it off the roof so it doesn't cover the vents. That area is overhand so you only have to insulate over the actual ceiling. You can see daylight, if you do it during the day, and make sure you don't cover the vents.

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Old 11/27/08, 07:51 PM
 
Join Date: Oct 2005
Posts: 1,069

In this area we typically take batt insulation and cut it into short sections, like a foot or two long, roll them like a bedroll, then tuck them into this void. In the case of a huge space, like the one you get with 2x12 rafters, I use Duct pan board. This is a cardboard product with a silver foil face. It is used to turn the space between floor joists into return air ducts on a hot air duct system. It has a stapling flange built into the edges and it can be cut with a utility knife.

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Old 11/27/08, 09:34 PM
 
Join Date: Oct 2005
Location: South Louisiana
Posts: 1,045

What I did was take some of the 4'x8'x 1/2" styrofoam boards that we used on the outside of the house and cut them to fit on top of the top plate of the wall (the 1/2" side touching the top plate) with slots cut in the board for the ridge rafters. Or, if it's easier, just cut some 14.5" wide and as tall as you need to block that area from getting into the soffit area.

Hope this makes sense. Had a lot of turkey today.....

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