- JmJ Construction is a Mastic Elite Contractor, which requires:
Better Business Bureau (BBB) score of 90% or above
5 years experience installing vinyl siding
Certified by Vinyl Siding Institute
Use top of the line products
Mastic Elite Contractors are licensed, insured and bonded
Mastic Elite Contractors are committed to staying current with the industry, required by 2 training classes every year to keep Elite status.