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Subject Author Date
Insulation - Southern Louisiana Jude Alexander 12-29-2007
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Posted by Jude Alexander on December 29, 2007, 5:48 pm

> Jude Alexander wrote:
>> Any architects on this ng from southern Louisiana? Would like to discuss
>> insulation in walls vs. attic. I suggest a 30R for attic and only 11R
>> for walls (4"). There is a myth out there that walls need to be 6" to
>> give southern walls adequate insulation. Crock of grits! I bump into
>> someone who keeps this myth going every now and then (like now - client -
>> who happens to be an engineer who thinks he knows more than God).
>
> Or, if he's not in a "flood" area, then here: http://tinyurl.com/yqm7qb.

I know that the walls don't need 6" of insulation in southern Louisiana.
This pdf gives me something to show the guy. We did all the heat gain/heat
loss calucations in college with brick/stone wall, stucco wall and siding ad
nausem.
>



Posted by Michael Bulatovich on December 29, 2007, 3:38 pm

> Any architects on this ng from southern Louisiana? Would like to discuss
> insulation in walls vs. attic. I suggest a 30R for attic and only 11R for
> walls (4"). There is a myth out there that walls need to be 6" to give
> southern walls adequate insulation. Crock of grits! I bump into someone
> who keeps this myth going every now and then (like now - client - who
> happens to be an engineer who thinks he knows more than God).

They have building codes down there? You can do r13 in 2x4s...



Posted by Jude Alexander on December 29, 2007, 5:45 pm

>
>> Any architects on this ng from southern Louisiana? Would like to discuss
>> insulation in walls vs. attic. I suggest a 30R for attic and only 11R
>> for walls (4"). There is a myth out there that walls need to be 6" to
>> give southern walls adequate insulation. Crock of grits! I bump into
>> someone who keeps this myth going every now and then (like now - client -
>> who happens to be an engineer who thinks he knows more than God).
>
> They have building codes down there? You can do r13 in 2x4s...

Yes.



Posted by Jude Alexander on December 30, 2007, 9:10 am

> "Jude Alexander"> wrote
>> Any architects on this ng from southern Louisiana? Would like to discuss
>> insulation in walls vs. attic. I suggest a 30R for attic and only 11R
>> for walls (4"). There is a myth out there that walls need to be 6" to
>> give southern walls adequate insulation. Crock of grits! I bump into
>> someone who keeps this myth going every now and then (like now - client -
>> who happens to be an engineer who thinks he knows more than God).
>
> I'm in hoosierville and have 2x4 walls, trussed roof, r11 in the walls,
> r30 in the ceiling, 1/2" OSB & tyvek on the outside and its NICE in here
> all year long with minimal mechanical climate control.

Ditto here @ 32 degree longitude and, I think, you're around 40 degree.



Posted by Kris Krieger on January 2, 2008, 7:24 pm

> Any architects on this ng from southern Louisiana? Would like to
> discuss insulation in walls vs. attic. I suggest a 30R for attic and
> only 11R for walls (4"). There is a myth out there that walls need to
> be 6" to give southern walls adequate insulation. Crock of grits! I
> bump into someone who keeps this myth going every now and then (like
> now - client - who happens to be an engineer who thinks he knows more
> than God).

Why is more insualtion bad?

I lived in a place here (Houston area) with low insualtion, and this place
(decent insulation). I could feel the heat (and January chill) through the
walls in the other place, feel lots less here. Main loss ia the windows -
double-paned, but the sumbass aluminum frames radiate like mad - had great
ones in Canada, wish I could recall what type/brand they were (that was
1993, so I've forgotten).

Air-conditioning is a lot more expensive than heat, so it always mystifies
me that people think you need less insulation in a hot (esp a hot and
extremely humid) climate.

YOu might call it a myth, but personally, I'd take more/better insulation
over less insulation ANY day.

I also got tech-shield and tyvek. I guess that, in your book, that makes
me an even bigger idiot. I'm not an engineer and I certainly don't think
I know more than God, OTOH, I *do* know what my energy bills say, or more
to the point, *don't* say.



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