R52 or R62 Cellulose Insulation in ceiling?

[weatherby460]

I live in northern IL and for $1250 I can do R52 or for $1500 I can do R62.

What should I choose? Thanks

 

[cowboy73]

I'd probably go for the R62. You gain an R factor of 10 for only $250.

 

[walrus]

I live in northern IL and for $1250 I can do R52 or for $1500 I can do R62.

What should I choose? Thanks

You buy insulation once, you buy heat and cooling forever.

On the other hand is this a shop? how much will the doors be open, tightness of building, windows, doors etc. Probably won't gain much with the higher R

 

[Voi]

I live in northern IL and for $1250 I can do R52 or for $1500 I can do R62.

Do you have raised heel trusses?

My gut reaction is that if this is a typical gable roof with standard trusses then you're not going to get anywhere near R-52 at the eaves so I'd just stop there.

It may look like you're paying a similar dollar amount "per R" for each of the quotes but with typical trusses you actually have a smaller area that can handle the greater depth due to the slope of the roof. That's often the case with raised heel trusses as well. But roof pitch, overhangs can also allow more insulation at the eaves so that shouldn't be the only deciding factor.

I'd take the $250 and put it into air sealing.

 

[jevoy]

I have a raised heel on my trusses. It is about 14" approx..in height. I am doing an r-38 cellulose blown in.

 

[weatherby460]

Its a Morton pole shed. 1' soffit. 6/12 roof pitch. Baffles will be installed also for ventilation.

How does the price seem?

 

[4cyclic]

R62


Seems very small price difference. You won't regret it.

 

[DC73]

I live in northern IL and for $1250 I can do R52 or for $1500 I can do R62.

What should I choose? Thanks

$1250 for R52 is about $24 per R1. The additional R10 ends up at $25 per R1. Not a lot of difference but you normally see the incremental cost get cheaper when adding additional insulation at the start of a project. The recommended R-value for your climate is R49 to R60. The further north you are in Illinois the more you'll want to go with the R62. If it was me, I'd spring for the extra R10 but try to negotiate a better price.

Good luck.

DC

 

[weatherby460]

Sounds like I'm not getting ripped off.

 

[Voi]

Sounds like I'm not getting ripped off.

Not accounting for the degree to which cellulose compresses under its own weight, the last 3" of R-62 takes up 4' less of eave-to-eave width at a 6:12 pitch than the first 3". That last 3" is where the extra R-10 is coming from.

When I had cellulose blown in my attic the extra R-10 was much cheaper "per R" than the lower layers that got us to code minimum. It was sort of like they were already there and set-up and were happy to keep their guys busy.

So you're not getting ripped off per se but I'd question the last 3" costing more per R. You can look at it costing the same per R, more or less, or you could look at it as more since there is less volume in that last 3".

 

[rburke65]

My take would be to spend the $250. You'll never regret it.

 

[Dragfluid]

Yes, go with the R62!