Can a cracked back window be repaired?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
No. Back glass is tempered, so a crack or chip means the whole pane is replaced, not repaired. A windshield can be resin-repaired because it is laminated, but tempered back glass shatters and has no interlayer to hold a fill. Back glass replacement typically takes 45 to 75 minutes when the glass is in stock.
Can you repair a rear windshield?
Back glass, the rear window, is tempered on most vehicles, which means it cannot be resin-repaired the way a windshield can. A laminated windshield has a plastic interlayer that holds a resin fill in place; tempered glass has no interlayer, so there is nothing to hold a repair. A chip or crack in back glass means the whole pane is replaced.
Tempered glass is designed to shatter into small granular pieces rather than sharp shards, so a crack in back glass often spreads quickly into a full break. That is why a cracked back window is replaced as soon as possible, before it lets go on its own. The defroster grid and antenna connections are reconnected as part of the replacement.
Back glass replacement typically takes 45 to 75 minutes when the glass is in stock. The old pane is removed, the pinch weld is cleaned, the new glass is set with urethane, and the defroster and antenna connections are reconnected. See our back glass replacement service and our rear window replacement cost guide.
Back glass is replaced, not repaired
A cracked or chipped back window is tempered glass, so it is replaced, not resin-repaired. The whole pane comes out and a new one goes in, with the defroster grid and antenna connections reconnected. Back glass runs $200 to $500+ out of pocket before tax.
Back glass repair myths
A chip in the back glass can be filled like a windshield.
Tempered back glass has no interlayer to hold a resin fill, so a chip or crack means the whole pane is replaced. Only laminated glass takes a resin repair.
A cracked back window can wait indefinitely.
Tempered glass can shatter suddenly from a crack, so a cracked back window is replaced as soon as possible, before it lets go on its own.
The defroster stops working after back glass is replaced.
The defroster grid and antenna connections are reconnected as part of the replacement, so the defroster works as before when the job is done.
More questions about back glass repair
Can a chip in the back glass be fixed?
No. Back glass is tempered, so it has no interlayer to hold a resin fill. A chip or crack means the whole pane is replaced, and the defroster and antenna connections are reconnected.
How long does back glass replacement take?
It typically runs 45 to 75 minutes when the glass is in stock. The old pane is removed, the new glass is set, and the defroster and antenna connections are reconnected.
Does insurance cover back glass replacement?
Glass damage is a comprehensive claim subject to your deductible. Back glass runs $200 to $500+ out of pocket before tax, and we bill your insurer directly when coverage applies.
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