Economy Garages has a specific way to load trailers to protect the materials and provide safe transportation.  We have developed our trailer loading methods over many decades.  It is always interesting to develop better ways of doing things as time goes on.  Economy Garages loads shingles down one side of the trailer, dimensional lumber down the other, and sheet products across the back.  This placement allows a very stable base for the walls to be placed on top creating both a protected area beneath to house the more susceptible items like garage doors, windows, aluminum products, etc., and a platform above for the trusses.  All items are well secured for travel and abide by all transportation laws.