Doors & Windows

What this certification means

Doors & Windows proves you can diagnose why a door binds or a window leaks, and correct it — hinge and strike adjustment, slab and prehung replacement, hardware, screens, and weather sealing.

What it covers

• Door anatomy: slab, prehung, jamb, casing, and swing direction
• Diagnosing sticking, dragging, and doors that swing open on their own
• Hinge shimming, strike plate adjustment, and latch alignment
• Slab replacement: mortising hinges and boring for hardware
• Prehung door installation, plumb, level, and shimming
• Lockset, deadbolt, and smart-lock installation
• Interior door types: bifold, bypass, pocket, and barn door hardware
• Storm doors, thresholds, and door sweeps
• Window types, sash repair, balance replacement, and screen rebuilding
• Weatherstripping, caulking, and stopping air and water infiltration

Who this is for

Handymen who handle door and window service calls, hardware upgrades, and draft complaints.