Originally Posted by
gretch6364
If you look at the Casita, Scamp, Escape and such brand trailers, they are a molded fiberglass shell, just like a boat. Each brand has its pluses and minuses, but that is what ties them all together.
Generally, straight walled trailers are wood frames on top of steel trailer frame with vinyl, fiberglass or other material attached to the straight walls and then a rubber roof. This means lots of seams and some additional annual maintenance. You can however, generally get a larger trailer for the money, but some say they tend to not last as long.