I am curious to know if anyone can provide any insight to how SQF defines impervious? We produce pet treats and are working on a plant expansion as well as moving towards our SQF certification. We use a dry clean up process, so would drywall walls be compliant with SQF and its impervious standard laid out in the code?
22.214.171.124 Walls, partitions, ceilings and doors shall be of durable construction. Internal surfaces shall be smooth and impervious with a light colored finish, and shall be kept clean