How to Insulate a Cargo Trailer
Cargo trailers, whether those used as 18-wheeler rigs or vehicles needing no special operator's license, tend to be hard-sided units skinned in aluminum sheeting and made rigid with support hoops and rails. The supports are usually approximately 1 1/4-inch deep. This structure lends itself well to the installation of insulation. Step 1 Remove any preexisting paneling or liner from the inside of the cargo trailer. Clean the walls using a 10-to-1 dilution of dish washing detergent, then rinse with clean water. Step 2 Create a vapor barrier to protect the finished project from condensation that can form in extreme temperatures. Proprietary vapor barriers are available in the air conditioner aisles of home improvement warehouses. An extremely efficient and cost-effective alternative is to glue sheets of bubble-wrap to the inside of the cargo trailer's skin. Some rigid insulation panels are supplied with an integral vapor barrier; if using these products this step should be ignored....
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