The problem with using construction adhesive in joining panels is that you are using a adhesive that has body, it is creating a space between the 2 substraights that is filled with the adhesive, the adhesive is then the weak spot, the adhesive it self has a very low tensel strength, so once again this is in theory, so depending on the service it is going to see it may work just fine. I will say that using it in the corners of the interior of the box is adding strength to it as apposed to latex caulk.