Consider Professional Repair

If the window remains stuck after cleaning, lubricating, and checking hardware, or if the frame is visibly warped, rotted, or structurally damaged, hire a professional window repair service. A specialist can diagnose underlying issues such as foundation settling, frame rot, or failed balances that are beyond typical DIY repair.

When to Call a Professional

• The window frame is visibly bowed, rotted, or pulling away from the wall
• The glass is cracked or the glazing has failed (fogging between double panes)
• Multiple windows in the home are sticking, which may indicate foundation movement
• The sash balance springs or cords are broken, causing the window to drop when released

Tips

• Get at least three written quotes before committing to a service
• Ask whether repair or full replacement makes more financial sense given the window's age and condition
• Check that the contractor is licensed and insured for window work in your area