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Old 11-06-2016, 04:39 PM   #1
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Help! the contractor disappeared.insulation


Hi my name is Joe and im new to this forum please be patient with me an let me know if im posting incorrectly. My contractor disappeared during insulation installation. im going to have to finish it myself. i want to install rafter vents but not quite sure what to use. soffit appears to be level with attic ceiling and wondering what would be the best way to install them. i have attached pictures any help would be appreciated.

Thank you
Joe
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Old 11-06-2016, 04:53 PM   #2
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Re: Help! the contractor disappeared.insulation


http://www1.eere.energy.gov/building...ing_report.pdf
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Old 11-06-2016, 05:44 PM   #3
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Re: Help! the contractor disappeared.insulation


First thing I would do is double check that those cans lights are I/C (in contact) and air tight fixtures.
There should be a label inside the can where the bulb goes.
As to the amount of insulation you should use that would depend on your location which was not mentioned.
Any place where anything penatrates the ceiling or top plates needs to be air sealed before insulation with expanding foam.
If it was mine I'd be going with blown in.
Lowe's and HD will let you use there blower for free if you buy at least 10 bags of insulation.
One trick I do is lay boards to walk on down the middle of the attic and tape a piece of 3" PVC pipe to the hose they give you with the blower.
That way you can stand in the middle and hit all the way to the baffles.
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Old 11-06-2016, 06:13 PM   #4
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Re: Help! the contractor disappeared.insulation


That looks like a very large overhang, if I'm seeing it right, which might eliminate the need for baffles. Baffles keep the insulation away from the bottom of the roof deck. In your case, what is the height above the outside wall top plate and the bottom of the roof. Once we know your climate zone we will know how much insulation you will need.

Whatever you use for insulation you will want a vertical barrier straight up from the outside edge of that top plate to a couple of inches below the bottom of the roof.

Check the rating on the can lights as Joe asked and let us know approximately where you are. Also, that vertical dimension.

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Old 11-06-2016, 06:24 PM   #5
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Re: Help! the contractor disappeared.insulation


I see Buds point, but without baffles there's going to be two issues.
There's just no way to control how far out the insulation blows out when installing and with wind gust it will blow the insulation back from where the top plate is.
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Old 11-06-2016, 06:27 PM   #6
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Re: Help! the contractor disappeared.insulation


thank you for the replies. I am in ne pa. the cans are I/C rated using led lights. Bud the top plate to the roof is approx. 18 in. how would you recommend building the vertical barrier i.e what type material etc. cut out for the joist or go over them? sorry if im not using the right terminology

ty joe
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Old 11-06-2016, 08:06 PM   #7
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Re: Help! the contractor disappeared.insulation


is that wiring ok ? looks like a real mess to me.
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Old 11-06-2016, 08:23 PM   #8
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Re: Help! the contractor disappeared.insulation


the wiring is everywhere, i have checked all lines they are all homerun, new wire and secure connections any suggestions?
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Old 11-06-2016, 09:01 PM   #9
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Re: Help! the contractor disappeared.insulation


what size are those rafters and joists ?
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Old 11-06-2016, 09:11 PM   #10
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Re: Help! the contractor disappeared.insulation


2x4 joist
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Old 11-06-2016, 09:17 PM   #11
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Re: Help! the contractor disappeared.insulation


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Originally Posted by sachsjl View Post
the wiring is everywhere, i have checked all lines they are all homerun, new wire and secure connections any suggestions?
the wires should have been run in an orderly fashion. then, where they must go over the joist, there should be at least a 2x4 with the wires secured to it.

after you blow in the insulation, and someone has to walk in there. they will not be able to see the wiring. they could trip on it or perhaps damage it somehow.
with a 2x4, they step on the 2x4 and not the wires.
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Old 11-06-2016, 09:19 PM   #12
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Re: Help! the contractor disappeared.insulation


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2x4 joist
are those trusses ? factory or site built ?
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Old 11-06-2016, 09:21 PM   #13
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Re: Help! the contractor disappeared.insulation


site built
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Old 11-06-2016, 09:25 PM   #14
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Re: Help! the contractor disappeared.insulation


I would suggest that the insulation stops AND the soffit materials be installed before you use blow-in insulation, otherwise you will have the dust from the blow-in landing everywhere.
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Old 11-06-2016, 09:32 PM   #15
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Re: Help! the contractor disappeared.insulation


Quote:
Originally Posted by sachsjl View Post
i want to install rafter vents but not quite sure what to use. soffit appears to be level with attic ceiling and wondering what would be the best way to install them.
i know what you need to do, and it will be a pretty fair amount of work, and perhaps cost.
but i want to see what others say first.
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