Engineered (sqaure tube) shop finish out

[black2002ls]

I am having a Texwin building installed with our new home build and plan to frame part of it to serve as a shop space for our laser engraving business. The shop will have spray foam before we take posession.

I haven't been able to find any good, informative, articles where someone has done this. My concern is the 2x4 framing for the room and the proximity to the frame. I will need 2x4's to support ceiling joists. I'm concerned about insulation and moisture between the shop walls and the area that I frame in. Should I frame up agains the metal frame and insulate the void, or should I leave air space?

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[Kaizen]

More descriptions on size and structure will be helpful.
So a portion of the building will be insulated and the rest not ?


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[johnnyradiant]

I think I get what you are asking. Are you talking about spray foam in contact with your Texwin structure as well as your 'shop' framing? If so I think your first source should be Texwin, they may have specs or warranty clauses dealing with spray foam and how it contacts or should not contact their metal. After the building insulation issue is dealt with I don't think you would have any other issues with the rest of your walls as part of spray foam's appeal is that the vapor barrier issues are dealt with when using spray foam. But my guesses are based purely on assumptions so milage may vary so much you don't even make it to the next gas station.

 

[black2002ls]

More descriptions on size and structure will be helpful.
So a portion of the building will be insulated and the rest not ?


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24x40 structure on a concrete slab. The structure is square aluminum tube and 29 ga R panel. The whole building will be foamed before we take posession.

I will be framing roughly a 12x24 room in the back of it that will be conditioned for our lasers.

I think I get what you are asking. Are you talking about spray foam in contact with your Texwin structure as well as your 'shop' framing? If so I think your first source should be Texwin, they may have specs or warranty clauses dealing with spray foam and how it contacts or should not contact their metal. After the building insulation issue is dealt with I don't think you would have any other issues with the rest of your walls as part of spray foam's appeal is that the vapor barrier issues are dealt with when using spray foam. But my guesses are based purely on assumptions so milage may vary so much you don't even make it to the next gas station.

I'm concerned mainly with my framing contacting their structure. I will reach out to one of their reps to see if they have any official recommendations.

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[My Old Tools]

My building in Greenville, TX was red iron I-beam. I built my interior walls into the I-beam space, but that still left about 4 inches of dead air. The red iron frame was insulated as built with fiberglass roll and I insulated the 2x4 framing with fiberglass bats. It made a very tight and quiet living space. I had no moisture or sweating problems as the roll insulation was between the frame and the skin of the building creating a thermal break. I don't know if spray foaming after the skin is installed will prevent sweating, but I would think yes.

 

[dcg9381]

Again, not sure what you're asking. Metal buildings do fine with spray foam in central Texas (local airport has several in the 10-15 year old range).
I've got a metal building that's spray foamed. We then framed 2x4 just off the perlins, which creates some space for electrical/plumbing behind the wood framing. It'd also allow some traditional insulation between the framing and the foam if you really wanted to improve the insulation.

Note, my entire building is heated (cooled) space. No issues with condensation. We've got hangers in the area that are partially heated/cooled and they do fine also.

I'd have concerns doing the wood framing "tighter" and foaming inside of the wood frame to the R-panel.