Certified Glass Installer and Technician (NGA) Most candidates underestimate how deeply the NGA exam probes glazing compound selection and application methods. Installers frequently confuse tempering processes with lamination requirements, costing them points on material science questions. Understanding ASTM specifications for sealants and the critical differences between structural silicone and setting blocks separates test passers from those who rely solely on field experience.
| Exam Name | Certified Glass Installer and Technician |
| Exam Code | NGA |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
