Certifications & Classifications
To maintain the highest quality workmanship, Alexander Company does not sub-contract our window and door installations. All work is performed by our highly skilled, in-house craftsmen. We guarantee our work to your satisfaction to ensure your windows will provide outstanding performance for years to come. Our installers are certified in a number of specialties:

• HIC - Home Improvement Certification
• C-2 - Insulation and Acoustical Classification
• D24 - Metal Products Classification
• B - General Building Contractor (Lic. 642553)
• C17 - Glazing Certification