Garage Insulator Newbie

[Delance412]

Good Day Everyone. I am new to this forum and new to making plans for my detached 16x12 garage. I need to insulate and possibly sheetrock everything up. My concern is insulation and structural integrity. The gaps between studs range from 16” to 28”. Is this normal? How do I insulate without breaking the bank? And then the ceiling joists are few and far between. Is there a way to add to these so that I can insulate and so that it is safe. They appear to be 2x4x12’s that are “supported” by 4’ pieces of 2x4. Does this sound like something I can do myself or does this require professional help? I want to create an area that is tolerable in the winter for some light woodworking. The last photo may be unclear; its a piece of lumber that attaches the top of the ceiling with one of the joists. SHouldn’t this be square and perpendicular to the joist? Sorry for the long post. Any advice would help. Thanks guys!!

 

[Blazinzuk]

Not the best picture but spray foam would work good in your situation. It is expensive but awesome.

You could get rigid foam boards and cut them to fit the cavity then use foam in a can ( great stuff) to seal them up.

Fiberglass Batts may need some extra boards

 

[Copymutt]

B4 you insulate, does that roof leak?
Jim

 

[Delance412]

No leaking. That seems to be the only thing that was done the right way.

 

[Delance412]

Not the best picture but spray foam would work good in your situation. It is expensive but awesome.

You could get rigid foam boards and cut them to fit the cavity then use foam in a can ( great stuff) to seal them up.

Fiberglass Batts may need some extra boards

With the 2” foam boards and the great stuff around the edges, there would still be a 1.5” gap between the foam and the wall panel. Would this still be okay? Thanks for the help.