If your car's rear window is damaged it will typically need to be replaced. If you have vehicle insurance that provides cover for glass damage, Rear window replacement cost will usually be covered by your excess and normally won't affect your no claims bonus.
Does insurance cover back windshields?
Does Car Insurance Cover Windshield Damages? All car insurance policies cover damages to a car's windshield, provided the policyholder holds a comprehensive coverage. Only if you have a comprehensive car insurance policy, your motor insurance company will bear the cost of replacing your vehicle's damaged windshield.
How much does it cost to replace a rear windshield?
Replacing a back windshield will cost between $100-$300 as there's rarely any complicated assembly required. If your vehicle has special molding, you can expect to pay up to 20% over and above average costs. If you have a broken car window, see this article on how to make a temporary car window.