[splat]

when I bought my house many moons ago. in the attic as far as insualtion went was a basic covering of R-15 , I have added another layer of R-19 which sould give my attic about an r-34 ratting , where is the point of diminishing returns on adding insulation in the attic ?

 

[BurlyShirley]

www.insulation.com/forums

 

[splat]

www.insulation.com/forums

and I was dumb enough to click that too. !!!

 

[BurlyShirley]

LMAO! That's great.

 

[N8 v2.0]

Go here:

http://www.eere.energy.gov/consumer/tips/insulation.html

 

[Ciaran]

Go here:

http://www.eere.energy.gov/consumer/tips/insulation.html

OMG! It's N8's first ever useful post!

 

[Brian HCM#1]

About R-38 is current standards.

 

[skinny mike]

OMG! It's N8's first ever useful post!

god damnit! i dont want the apocalypse brought upon us now! thanks for nothing N8!

 

[H8R]

Add insulation until cracks appear in the ceiling below from the weight.

Then add another layer.

 

[H8R]

About R-38 is current standards.

For CA or?

I'd imagine the colder the climate the more insulation is needed.

 

[Potroast88]

I was told by the guy did the inspection on my new home that you can over-insulate. He said that a house needs to "breathe" and too much insulation will hinder that. I don't know if it's true or not, but he was a licensed inspector.

 

[buildyourown]

Completely depends on the climate.
In Seattle, the winters are so mild, that it really doesn't pay to insulate much at all.
In most climates, I'd think anything over 25 wouldn't be cost effective.