Thermal cycling in Santa Clara County stresses window mechanisms over time. We identify and replace the specific component causing operational failure.
Broken Sash Balances
Misaligned Lock Cams
Degraded Weatherstripping
Snapped spiral balances or fractured constant-force spring coils cause sashes to drop suddenly or require extreme physical effort to lift.
Shifted keepers and warped cam latches prevent sashes from cinching tight, compromising home security and breaking perimeter air seals.
Brittle fin seals and flattened pile strips create noticeable drafts along the sill, allowing South Bay summer heat and fine dust inside.
Our four-stage diagnostic repair
Sash Extraction and Inspection
Balance Weight Calibration
Track and Channel Refurbishment
Tension and Lock Testing
Every glass sash is measured and weighed to match the exact poundage rating required for replacement spring coils.
Reinstalled sashes are tensioned to ensure smooth one-handed lifting and tested for daylight-tight latch engagement.
We unhook the operable sash from jamb tracks without marring surrounding paint or interior drywall returns.
We clean debris from lower sill tracks, clear clogged exterior weep slots, and install matched poly-pile draft seals.
Restore smooth window operation
Speak directly with our San Jose glazing technicians. We assess your hardware issues and provide clear diagnostic quotes without high-pressure tactics.