What should technicians use when marking on the back of carpet?

Using a pencil to mark on the back of carpet is the most appropriate choice for several reasons. Pencils create marks that can be easily removed or covered up without leaving a permanent stain, which is essential in maintaining the integrity and appearance of the carpet. Since technician work often requires precision and the ability to later conceal markings, a pencil allows for this versatility.

Pencils provide a fine point for detailed markings, which is beneficial for making specific notes about cuts or seam placements. They also do not bleed or spread like ink-based writing instruments might, ensuring that the markings remain precise and clear.

While other options might leave marks, they can potentially cause damage or discoloration to the carpet backing. Markers can bleed through or leave permanent stains, chalk can easily smudge or erase unintentionally, and highlighters tend to contain inks that may cause issues with the carpet material as well. Thus, using a pencil aligns with best practices in carpet reinstallation and repair, ensuring no long-term impact on the material being worked on.