Roof insulation

[spudwrench]

Speaking with local metal building installers about roof insulation I’m looking around 2k added cost for the building. They said they use r10 white backed insulation.

I do like the idea of the insulation being installed between the frame and the sheet metal for a cleaner install.

Is this worth it or should I just get the building and have someone else do the roof after. I know the money spent will probably be about the same either way as I’m not going to do it myself.

Located in middle Ga it gets toasty sometimes in the summer but more humid than anything.

 

[dcg9381]

How big is your building? Doing better than R-10, maybe R-12 with open cell spray foam was $5000 for me, 2400 sqft.

If you do the "blanket" insulation, you can always come back and enclose it with additional traditional insulation, but you can't use spray foam (it should not be sprayed to that existing blanket).

Insulating the roof yourself is difficult unless you have an attic.

You may find that the "labor" to do the roof rafters and the contracted cost to do spray foam - might be in the same ballpark. Labor on roof insulation is expensive. Spray foam isn't very labor intensive comparatively.

 

[spudwrench]

How big is your building? Doing better than R-10, maybe R-12 with open cell spray foam was $5000 for me, 2400 sqft.

If you do the "blanket" insulation, you can always come back and enclose it with additional traditional insulation, but you can't use spray foam (it should not be sprayed to that existing blanket).

Insulating the roof yourself is difficult unless you have an attic.

You may find that the "labor" to do the roof rafters and the contracted cost to do spray foam - might be in the same ballpark. Labor on roof insulation is expensive. Spray foam isn't very labor intensive comparatively.

The building size is 30x50x12 but the interior space will be 30x40x12. Yah I can diy a lot of stuff but typically I avoid anything that involves the use of a ladder or putting my arms above my head

 

[Rusted Nut]

A 30x50 for two grand is deal I would jump on.

 

[spudwrench]

A 30x50 for two grand is deal I would jump on.

Technically it’s 30x40 is the area that will be insulated as 10 x30 will be a porch area on the side. I for the most part figured the price was fair but was curious if there was a better option to sourcing the insulation after the building was put up

 

[billconner]

I think it depends som on much you'll be in it, how tolerant you are if a little warmer, and how much you'llworry about energy dollars.. But I'm in the jump on it group, unless money is no object.

 

[racecougar]

Agreed that it's a good price, and that you'll want more insulation than that if you're conditioning the space regularly.

 

[Joemctag]

If it will be a “tube” building and your roof framing is trusses every 4 or 5 ft fabbed out of said tube, alot of people cover the underside of them with white 29 gauge “ag” panels. Then you can spray in a really thick layer of cellulose. That’s where you rent the machine and one of you is spraying it in ( you leave a hatch opening in the ceiling ) and the other id on the ground feeding the machine. It’s not hard at all.
Also, I think blow in is the cheapest way to insulate a ceiling.

 

[My Old Tools]

I had mine done by the builder, but I had an additional 8 inches strapped on the roof. Roof is where most of the heat comes from.