Anyone no the r rating for this insulation?

[Jonathan T. Hittle]

I need to find the R-Value for the picture insulation. Thanks for any help you all can offer.

[Jonathan T. Hittle]

It was approximately 6-8 inches deep.

[Michael Larson]

appx. R-19-21

[Jonathan T. Hittle]

Thanks guys, NACHI saves the day again!

[Larry D. Kage]

Loose fill fiberglass has an R-value of 2.2 to 2.7 per inch.

http://apps1.eere.energy.gov/consume.../mytopic=11650

[Michael Larson]

Originally Posted by lkage

Loose fill fiberglass has an R-value of 2.2 to 2.7 per inch.

http://apps1.eere.energy.gov/consume.../mytopic=11650

That seems on the low side.

I checked a number of sources and they vary but I didn't see others that low.

I use R-19 = 6" as that is what you generally how you see 6" fiberglass batts listed.

[Wayne B. Wilson]

Here is a link i use there is lots of info
http://www.ornl.gov/~roofs/Zip/ZipHome.html

[Larry D. Kage]

Originally Posted by mlarson

That seems on the low side.

I checked a number of sources and they vary but I didn't see others that low.

I use R-19 = 6" as that is what you generally how you see 6" fiberglass batts listed.

Yes, batts typically have a little higher R-value.