Window Installer Credentials: What Certifications Matter

Not all window installers have the same training and qualifications. According to FGIA and AAMA, industry certifications indicate training and competence that can affect your installation quality.

Key Industry Certifications

According to FGIA (formed by merger of AAMA and IGMA):

FGIA/AAMA InstallationMasters

What it is: Comprehensive training program for window and door installation

Requirements:

• Classroom and hands-on training
• Written examination
• Practical demonstration
• Ongoing education requirements

What it demonstrates: Understanding of proper installation methods, water management, air sealing, and building science

Why it matters: According to AAMA, improper installation is the leading cause of window failure claims

Manufacturer Certification

What it is: Training from specific window manufacturers

What it demonstrates:

• Knowledge of that brand's products
• Understanding of warranty requirements
• Proper installation for that system

Why it matters: May be required for warranty validation

EPA Lead-Safe Certification

What it is: Required for work on pre-1978 homes

What it demonstrates: Training in lead-safe work practices

Why it matters: Federal law requires this for renovation work in older homes

Idaho Licensing Requirements

According to Idaho Division of Building Safety:

Contractor registration:

• Contractors must register with the state
• Public works contractors require additional licensing
• Verify at dbs.idaho.gov

No specific window installer license:

• Idaho doesn't have specialized glazier licensing
• General contractor registration applies

How to Verify Credentials

According to FGIA guidance:

Ask for documentation:

• InstallationMasters certificate (has expiration date)
• Manufacturer training certificates
• EPA lead-safe firm certification number

Verify independently:

• FGIA maintains directory of certified installers
• EPA has searchable database of certified firms
• Idaho DBS has contractor lookup

Check for currency:

• Certifications expire
• Ask when training was completed
• Verify continuing education

Red Flags

According to AAMA guidance, be cautious if installer:

• Claims certifications but can't produce documentation
• Has no manufacturer training on products they sell
• Isn't registered with Idaho contractor registry
• Doesn't mention or isn't aware of lead-safe requirements for older homes

What Certification Doesn't Guarantee

According to FGIA:

Certification indicates training, not necessarily:

• Years of experience
• Customer service quality
• Fair pricing
• Business stability

Use certifications as one factor in evaluation, not the only one.

The Bottom Line

According to AAMA, proper installation is as important as window quality. Certifications like InstallationMasters indicate training in proper techniques. While not the only factor in choosing an installer, credentials provide meaningful quality indicators.

*For complete hiring guidance, see: [Choosing a Window Installer](/guides/choosing-window-installer)*