  White Zone  Low skilled contractors using cheap materials that do not last. In some cases, contractors may be uninsured or unlicensed.  Blue Zone  High skilled contractors who use a range of quality materials built to last and charge their clients fairly for their services. These contractors are licensed, insured and specialized in their work.  Red Zone  High skilled contractors who use proprietary quality materials and charge their clients a premium for labor and materials. These contractors are licensed and insured but may not be specialized in their work.  White Zone  Low skilled contractors using cheap materials that do not last. In some cases, contractors may be uninsured or unlicensed.  Blue Zone  High skilled contractors who use a range of quality materials built to last and charge their clients fairly for their services. These contractors are licensed, insured and specialized in their work.  Red Zone  High skilled contractors who use proprietary quality materials and charge their clients a premium for labor and materials. These contractors are licensed and insured but may not be specialized in their work.  