Attic Insulation
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Old 11-05-2009, 09:41 PM   #21
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Re: Attic Insulation

Quote:
It isn't necessary.
Not here.
Water vapor travels from the higher
concentration to the lower concentration.
It does not require heat transfer.
There is no difference in heat loss whether
there is R-38 with vapor retardant, or R-38
with out vapor retardant.
WRONG!

Air traveling through every little hole in the walls and ceiling results in heat loss silly man.

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Old 11-05-2009, 10:16 PM   #22
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Re: Attic Insulation

why would you buy insulation from Lowes? I just bought R19 24" unfaced for $0.26/sqft from SPI-box stores charge a healthy markup because they know DIY homeowners will buy the goods.
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Old 11-06-2009, 10:06 AM   #23
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Re: Attic Insulation

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Originally Posted by Rennovator View Post
Ok im getting the faced R-30 with the paper facing the floor from Lowes
If you're buying that stuff from Lowes why not just buy the blown in insulation from them and blow it in? They even give you the machine for no charge to do it.

You'll be done in 1/3 of the time and have a better final product. You can achieve R-60 easily by standing there with a hose in your hand, maybe even smoking a cigarette and having a beer while you are doing it.
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Old 11-06-2009, 12:18 PM   #24
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Re: Attic Insulation

Mike, are you saying that blown insulation is.......better?
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Old 11-06-2009, 01:14 PM   #25
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Re: Attic Insulation

Betterer in regard to I can stand there with a cig and a beer holding a hose and fill the attic to the top if I wanted to for as much R value as I want. Betterer in regard to not having to crawl all over the place, cutting batts and stuffing them and getting all itchy and pissed and then having to add more across those to gain more R-value if wanted.
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Old 11-08-2009, 02:06 PM   #26
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Re: Attic Insulation

For what its worth i dont think i've ever seen any insulation installed without a vapor barrier regardless of walls floor or attic. Must be a regional thing.
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Old 11-09-2009, 11:43 AM   #27
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Re: Attic Insulation

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Originally Posted by jkfox624 View Post
For what its worth i dont think i've ever seen any insulation installed without a vapor barrier regardless of walls floor or attic. Must be a regional thing.
Drywallers there always staple up visqueen
before they hang flat ceilings for blow-ins?
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Old 11-11-2009, 08:04 PM   #28
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Re: Attic Insulation

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Drywallers there always staple up visqueen
before they hang flat ceilings for blow-ins?

99% of its kraft faced batts and the rest is visqueen before drywall.
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Old 12-20-2009, 06:41 PM   #29
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Re: Attic Insulation

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Originally Posted by jkfox624 View Post
99% of its kraft faced batts and the rest is visqueen before drywall.
how about the radiant barrier mult reflecive, r vaule of 11 add to insulation anyone hear of this concept?
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Old 12-20-2009, 06:48 PM   #30
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Re: Attic Insulation

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Originally Posted by Kenny K View Post
how about the radiant barrier mult reflecive, r vaule of 11 add to insulation anyone hear of this concept?

R value of 11 from radient barrior?? Better check on that number.

Blown cellulose is better than fibreglass as there is very little air movement in it.
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Old 12-20-2009, 07:16 PM   #31
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Re: Attic Insulation

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how about the radiant barrier mult reflecive, r vaule of 11 add to insulation anyone hear of this concept?
Yep we use it and it's a R11.6

It's called eshield

Quote:
Originally Posted by Framer53 View Post
R value of 11 from radient barrior?? Better check on that number.
It's fiberglass with a reflective film on both sides. It's legit
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Old 12-20-2009, 07:25 PM   #32
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Re: Attic Insulation

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Yep we use it and it's a R11.6

It's called eshield



It's fiberglass with a reflective film on both sides. It's legit
Buddy, looked everywhere at their web site , can't find quoted rvalue, just some vague talk about e value. Not saying it isn't valid, but I have never heard of it before.

Found it. I would like to know how 1/4" of fibreglass can = r11.6.
Last edited by Framer53; 12-20-2009 at 07:27 PM. Reason: correction
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Old 12-20-2009, 07:31 PM   #33
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Re: Attic Insulation

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Originally Posted by Framer53 View Post
Buddy, looked everywhere at their web site , can't find quoted rvalue, just some vague talk about e value. Not saying it isn't valid, but I have never heard of it before.

Found it. I would like to know how 1/4" of fibreglass can = r11.6.

http://eshield.net/eshield11k.html

It's a combination of reflective and convective technology . Much like the insulation found in an oven
Heat is reflected back to it's source much like Low E in glass. Low E can produce and R of 9.9 all by itself.
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Old 12-21-2009, 06:33 PM   #34
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Re: Attic Insulation

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Originally Posted by buddy110 View Post
Yep we use it and it's a R11.6

It's called eshield



It's fiberglass with a reflective film on both sides. It's legit
Yay that is is it, guardian product, would you combine this with blown in insulation to increase r value or do you sometime use it stand alone?
Just started carrying it, what would be a valid retail price for product?
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Old 12-21-2009, 09:43 PM   #35
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Re: Attic Insulation

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Originally Posted by Kenny K View Post
Yay that is is it, guardian product, would you combine this with blown in insulation to increase r value or do you sometime use it stand alone?
Just started carrying it, what would be a valid retail price for product?
We do both or one of the two depending on the situation. In a home drenched by the sun I'll use eshield.

I like to install this on the roof rafters. Do that and the attic will be 25 degrees cooler in the summer
Last edited by buddy110; 12-21-2009 at 11:15 PM.
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Old 12-22-2009, 03:54 PM   #36
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Re: Attic Insulation

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Originally Posted by buddy110 View Post
We do both or one of the two depending on the situation. In a home drenched by the sun I'll use eshield.

I like to install this on the roof rafters. Do that and the attic will be 25 degrees cooler in the summer
That makes sense, It depends on the application if you are considering both e shield and insulation.
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Old 12-22-2009, 03:56 PM   #37
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Re: Attic Insulation

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Originally Posted by Kenny K View Post
That makes sense, It depends on the application if you are considering both e shield and insulation.


You have top be careful with laying it over top of fiberglass or paper (cellulose). That can cause condensation to collect on the underside in winter. That's not a good thing
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Old 12-22-2009, 03:58 PM   #38
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Re: Attic Insulation

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Originally Posted by buddy110 View Post
We do both or one of the two depending on the situation. In a home drenched by the sun I'll use eshield.

I like to install this on the roof rafters. Do that and the attic will be 25 degrees cooler in the summer
Quote:
Originally Posted by buddy110 View Post
http://eshield.net/eshield11k.html

It's a combination of reflective and convective technology . Much like the insulation found in an oven
Heat is reflected back to it's source much like Low E in glass. Low E can produce and R of 9.9 all by itself.
That is a great explanation. It makes us window guys understand a little better I am just a beginner, Hey did you guys here about the cash for caulkers? That sounds like a great opportunity.
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Old 12-22-2009, 04:00 PM   #39
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Re: Attic Insulation

so, you need some sort of dead air space? would you use a diifferent type of insulation? so you blow in with machines of bat type. I know some contractors use this atticcat/
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Old 12-22-2009, 04:03 PM   #40
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Re: Attic Insulation

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Originally Posted by Kenny K View Post
so, you need some sort of dead air space? would you use a diifferent type of insulation? so you blow in with machines of bat type. I know some contractors use this atticcat/

You can use attic cat or anyhing you want. It's just a bad idea to lay this stuff over top of it.
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