Louisiana pole barn build ?????

[lowell66dart]

This spring I hope to begin construction of a 40 x 80 pole barn with 14 foot walls. My biggest question is insulation. This building will rarely see any heating (portable propane or kerosine) and no cooling. What I don't know is if the building should be insulated like a conventional home. I hope that I can find some real world experience here. I really don't want the builder to put the standard vinyl with some insulation stuff between the sheeting and structure. I don't think it will last, especially on the roof. Every older building I go in I see it falling down. This is the last shop I'll ever build and it won't be sold in my lifetime. This will have a ceiling of tin similar to the outside sheeting only thinner attached to the bottoms of the trusses. On the walls I was thinking of stripping them on 2 foot centers similar to the outside walls. I would then use OSB for the upper 8 foot and metal sheeting for the lower 6 feet. I am thinking some sort of fiberglass batts in the walls which would not touch the outside metal. Do I need a vapor barrier and if so where, what kind etc. Now how about the roof or ceiling. I guess I could blow in something on top of the ceiling but am wondering if there is some other way to insulate the roof. Spray foam is really not in my budjet. What I am trying to accomplish is a way to keep this building from sweating with all the humidity we have down here. This will mainly be a place to work on the racecar and store it and my enclosed trailer. Of course we going to be cooking, hang out, etc.
In one corner will be a 12x30 foot space that will be cooled and heated. This will be a kitchen, bathroom and tool storage room. The area above it will be built up for heavy duty storage.
Really appreciate anyone taking the time to throw some opinions out there.

 

[banzaitoyota]

When you build the structure; spend the extra bucks and utilize bookshelf girts

 

[lowell66dart]

What are the advantages?

 

[banzaitoyota]

you place the girts horizontally between th poles; you can space them at standard distances to aloow running batts of insulation or doing dense fill blown cellulose. it also makes a stronger structure

 

[Dragster Racer]

When I did mine, I used some 1/2" foam board between the girts, up against the exterior metal. Then I put in bookshelving, and then R19 batts. Over the bats went the vapor barrier. I don't mind osb, but once you use the steel liner, you will want to do the entire thing in the steel. It is lighter and easier to work with than the osb, and looks terrific, and doesn't ever need paint.

 

[lowell66dart]

I did a search on bookshelf but didn't come up with much. Anyone have any pics. I believe whats been said but I am having trouble understanding how it would be stronger. I would like to understand more before I call the builder to discuss.

 

[larry_g]

I did a search on bookshelf but didn't come up with much. Anyone have any pics. I believe whats been said but I am having trouble understanding how it would be stronger. I would like to understand more before I call the builder to discuss.

They are commercial girts, not bookshelf, See my build thread below where I have used both in different parts of the building. I also use that

standard vinyl with some insulation stuff between the sheeting and structure. I don't think it will last, especially on the roof. Every older building I go in I see it falling down.

I have had it in two buildings without any problems. The insulated vapor barrier comes in 6 or 8' width and I used it on both walls and roof. I am very happy with it.

If you go to http://www.mwbsc.com/ and look at the model building they show the commercial girts also.

lg
no neat sig line

 

[Dragster Racer]

What I call bookshelving is 2x's laid flat, starting at the floor, and spaced on 24" centers. They look like bookshelves. Make them flush to the front of your pole beams, and they support whatever wall covering you put in. Something to screw to. You run your insulation batts left to right instead of up and down. Lay it on top of the bookshelves.

 

[lowell66dart]

First of all, thanks for the replys and links, really appreciate the feedback. What i'm starting to learn, I think, is that the wall purlins have little to do with the building sturdiness. I need to think on this tonight.