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Gluing won't hurt, but it won't help either (in this application) so I wouldn't bother. Where gluing does help is when you are doubling a beam by stacking two smaller beams on top of each other. (i.e. 2 2x4's to make a 2x8) Gluing will then help transfer the longitudinal shear stresses that develop when the beam bends slightly. (To visualize this shear, ...


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Silicone caulk works wonders in all kinds of situations. The screws that are missing to hold all parts together can usually be replaced at any Home Depot or electrical supply store for just a few cents per ea. The hanging outlet box I have seen used several times in barns, however if a 2 by 4 can be attached to a ceiling crossbeam and placed perpendicular ...


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The links in the other answers are very informative! In answer to your question: So: is the fiberglass a bad idea? The answer is yes, at least in the exterior walls. In answer to your question: If so, what should I do instead? You have a bunch of options, none as cheap as simple fiberglass batts. My personal recommendation would be rigid foam ...



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