Some manufacturers attach the trailer's skin with a strong, double-stick tape so no rivets dent the metal. You need to take into consideration shear strength, holding capability, and sealing requirements when choosing rivets. Seals and gaskets must block air and light. A smoke test is often used, particularly on custom trailers, to detect leaks. The trailer's exterior finish must deflect the effects of weather.
Manufacturers use automotive processes to bond paint to metal walls.
All exposed steel should be painted, and the subframe on all trailers should receive a protective undercoating. Through computer simulation, we test the strength and structural integrity of our designs before we begin the manufacturing process. A prototype built after computer testing is then tested on the road. Most manufacturers offer warranties of up to seven years on certain structural components. Other than that, few cite any industry regulation.