Attic Baffle Install

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Old 06-29-18, 09:20 AM
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Attic Baffle Install

Forgive me here... Im going to ask for some advice without photos at the moment.

Heres the situation, the prior owner of the home blew in insulation without baffles installed. What that meant was that the insulation was significantly higher in the areas in the middle of the attic, and then tapered off as it was being blown towards the plate on the exterior wall. So it looks like they avoided getting the insulations into the soffits.

So, at the moment I'm planning on trying to fix any air leaks around penetrations, and would further like to add a layer of extra insulation in my attic since its not very thick. My question is this, Is there a means of installing baffles when the roof pitch is really low?

In a dry run I attempted to install these: https://www.homedepot.com/p/ADO-Prod...4610/202389935

However, it just tore apart as I was trying to wedge it in place, and frankly, Given the pitch and truss design Im several feet from being able to touch that top plate (maybe four feet).

Ive also considered using these: https://www.homedepot.com/p/ADO-Prod...8010/202541343

Which is fine, but it leaves a gap between the plate and the vent. I am considered still using the vent, but shoving a section of fiberglass roll insulation underneath it (as I think I could shove it in with a broom or something). Ultimately, with the a section of roll insulation in place Im hoping that this will allow me to mound up the blown insulation in that area without having any make its way into the soffit.

Any suggestions or feedback? Any is greatly appreciated!

Thanks,
Ben
 
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Old 06-29-18, 10:20 AM
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You can do it outside if you remove gutters and fascia.
 
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Old 06-29-18, 11:56 AM
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So how low of roof pitch are you dealing with that makes it that difficult to get to the sofit?
 
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Old 06-29-18, 01:41 PM
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To be clear, I'm trying to (from the attic) install baffles along with seal of sorts between the top plate and the bottom of the baffle before I blow in insulation. Im hoping to avoid removing fascia, gutters, or soffit. Below is a link to a pic of the front of my house which gives you an idea of the pitch. The truss design, along with the pitch makes it very difficult to get to the top plate from the attic. As I mentioned in the original post, I considered shoving in some bat insulation to make that seal before blowing in insulation.


https://photos.app.goo.gl/hvyYM84HgbBoeRJBA
 
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Old 06-29-18, 02:36 PM
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ouch, very shallow with large overhang.

No easy way, agree would not want to remove fascia/gutters.

Anything you can do to get an open channel for air flow is all you can do, anything is better than nothing!
 
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Old 06-29-18, 03:33 PM
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Lay half sheets plywood down up there and make yourself skinny. There is no magic wand for this.
 
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Old 06-30-18, 05:56 AM
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Ok. That kind of what I thought too. Would the approach of jamming in bat indication after the baffles are stapled in make sense, too?
 
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Old 06-30-18, 06:33 AM
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My low pitch approach: No longer thin enough and young enough, but when I did climb out to those tight spots I used a piece or two of plywood and 2x4 cross pieces. Lay the cross pieces in place and then the plywood, be sure the 2x4's are plenty long so they won't slip. If I need to go farther out that is where the second piece of plywood comes in (I prefer 5/8 or 3/4).

Major air leaks such as around plumbing vents, can lights, chimneys, attic access hatch, drop ceilings like over kitchen cabinets showers and stairs, are the bigger issue. Those top plates are far less important so if you can't get out there very little penalty.

Stuffing some fiberglass in there to keep the insulation out of the soffit is a common practice. If you want better, try some Roxul. Higher density and can be cut as desired.

Here is a link on site built baffles that might give some tips.
http://www.greenbuildingadvisor.com/...-baffles-roofs

Bud
 
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Old 07-02-18, 12:04 PM
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Thanks for the advice, I appreciate it.
 
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