While camper trailers at face value look very similar they can be vastly different in quality. Australian made canvas will generally of the highest possible quality and have inbuilt mould retardant in the manufacturing process to suit Australian conditions. To save on costs many non-guild members use cheaper overseas manufactured canvas that looks fine – until it rains.
This recent CSIRO analysis of imported 14 ounce “ripstop” canvas shows the difference:
See the report here
The canvas leaks water when it rains, when you pack up and drive home mildew will form on it – making it necessary to replace the canvas in some instances:
Ripstop Fabric problems