R52 or R62 Cellulose Insulation thickness?

[weatherby460]

Can someone tell me how thick these 2 usually are?

Thanks

 

[justinjoyal]

You can figure roughly R3.5 per inch, so about 15in for R52 and 18" for R62.

 

[weatherby460]

Any negatives of getting the r62 besides the cost?

 

[justinjoyal]

No. Just more $$$ on the spot.

 

[jkeyser14]

Any negatives of getting the r62 besides the cost?

Depending on the truss spacing and how thick the drywall is, I have heard of the added insulation weight causing some sagging.

See here:
http://www.garagejournal.com/forum/showthread.php?t=15992

 

[justinjoyal]

Shouldnt sag if built properly. Or use 5/8 drywall if worried.

 

[Milton Shaw]

Don't wet the bottom side of the drywall to much. I used popcorn spray on my ceiling and it sagged between joists. Should have painted it and then sprayed popcorn to keep more of the water out of the surface of the drywall.

 

[weatherby460]

No drywall...I used steel panels.