Workshop insulation and door help

[zekeymonkey]

Ok, so I'm going to build a pole building to use as a workshop and need a little help.

The building will be fully insulated. I'm planning on having 1 to 2 inches of spray foam then put fiberglass insulation from there. Should the roof be fully vented as with normal fiberglass insulation?

As I would like to heat and cool at least part of the building, what's the best option for large doors. I need 1 or 2 10x10 doors to allow me to bring in a car and the mill I'm hoping to purchase as soon as I have some place to put it. I won't need to open the large doors often as the cars that are going in the building are long term projects. My concern heat loss and air infiltration.

Thanks,
Zeke

 

[Zeke]

No reply other than to say hi.

 

[zekeymonkey]

Hi, Zeke and good name.

I got some information from an insulation company today. They do not recommend venting the roof with the spray foam. So, non-vented it is.

 

[JPrato]

I put 2 10x10 overhead doors in my pole barn shop. I went with steel commercial doors that had a R-12 rating and no windows. They have have steel on both sides with foam in between and are pretty stout. Along with the usual rubber flap seal on the outside I put two strips of foam bead gaskets like used in man doors on all three sides where the door rest up against the framing. Although a little pricey (about $1,200 ea) the doors are sealed well and insulate against the cold winters here in upstate New York.

 

[NUTTSGT]

Spend decent money on insulated doors, they will be the biggest heat loss. Once I close my doors, I slide small wedges in behind the latches to close up the airgap on the doors and get old man Ohio winter out.