Trade-Specific Associations for Subcontractors
Trade Associations •
National Glass Association (NGA)
National Glass Association (NGA)
The National Glass Association is the largest trade association serving the glass industry. Its member community represents 1,800+ contract glaziers, full-service glass companies, fabricators, manufacturers, and suppliers. NGA champions the benefits of glazing and glass building products and is a reliable industry resource for its members.

Trusted by trade contractors across the country












- 70+ online training and glazier apprenticeship courses
- 300+ technical and advocacy resources on core industry topics
- An array of industry conferences including GlassBuild America, Building Envelope Contractors Conference, NSA Glass Conference, and more.
- A steady stream of industry news, information, and insights
- Access to a member directory to connect with peers across the industry
Trade-Specific Associations for Subcontractors
Trade Contractors Get Paid Faster with Siteline
Other trade associations
Mason Contractors Association of America (MCAA)
The Mason Contractors Association of America (MCAA) is the national trade association representing mason contractors. It provides education, training, and advocacy to help contractors stay competitive.
American Society of Concrete Contractors (ASCC)
The American Society of Concrete Contractors is a non-profit trade association of cast-in-place concrete contractors. Members include approximately 750 concrete contractors, manufacturers, designers, and suppliers. ASCC provides industry knowledge, best practices, and recognition to help concrete contractors maintain a strong presence in the construction industry.
National Systems Contractors Association (NSCA)
The National Systems Contractors Association is a non-profit association representing the commercial electronic systems industry. Members include contractors, manufacturers, consultants, architects, engineers, and other professionals working with low-voltage technology.