Assuming owner and environmental regulations permit, which of the following procedures is NOT recommended for repairing tarpaulins or open top containers?

Using a patch of the same material as the tarpaulin for repairs is generally not recommended, primarily due to issues with material compatibility and the effectiveness of the repair. Tarpaulins are often made from a variety of materials such as PVC, PE, or other synthetic fabrics, each with distinct properties, including flexibility, strength, and adhesion characteristics. When a patch is sewn onto the tarpaulin, mismatches in material properties can lead to poor adhesion, differential wear, or even the seam becoming a point of failure over time.

Additionally, sewing can compromise the integrity of the existing material, particularly if the stitching creates perforations that could allow water ingress, which is a critical failure in containers designed to protect cargo from the elements. Other repair methods, such as using adhesives or specialized repair compounds, often provide a better seal and longevity.

In contrast, cleaning the area with acetone or mineral spirits helps to prepare the surface for adhesion by removing contaminants. Using a heat gun can effectively fuse compatible materials together, creating a strong, waterproof bond. Repairing small pinholes with epoxy compounds can also be a reliable method, as these compounds can seal minor leaks without the risks associated with sewing.