Given the amount of stress the average safety glass rear window is under at all times, it can shatter suddenly if there’s even minor damage to the edges or interior of the glass. From the outside, however, the damage appears to occur for no reason whatsoever.
Can a car back window shatter on its own?
Sometimes a car window can shatter almost spontaneously, such as when the vehicle door is closed particularly hard. … As the damage develops during normal vehicle use, the glass becomes more vulnerable to pressure and can eventually break unexpectedly.
Why did my window shatter by itself?
The expansion of the heated glass center results in tensile stress at the edge of the glass. … A far less common—but often cited—cause of spontaneous glass breakage is nickel-sulfide (NiS) inclusions in tempered glass. Small nickel-sulfide stones can form randomly in the production of float glass.
Do rear windows shatter?
While many rear automobile windows immediately shatter when they are damaged, others instead develop cracks or chips. However, no matter what type of damage your rear window has suffered, this window should always be replaced at the first sign of damage.
Why would a rear window shatter?
When the glass is whole and intact, this expansion and contraction is completely harmless and unnoticeable. But when there’s a chip or crack in it, the glass gets continuously more damaged with every expansion and contraction. Eventually, this causes it to shatter as though it had just been struck by something large.
What can cause back window to shatter?
Road debris, stones, etc. might seem small, but they can cause much damage to your car’s back glass. It’s quite common for rocks and other debris to fly off the road and crash onto the back glass, often causing it to crack or even shatter completely.
How much does a rear window replacement cost?
How Much Does Rear Window Replacement Cost? The average cost of a rear window replacement is $325. Rear window replacement costs ranged from $200 to $450 in the US for 2019 according to RepairPal. Estimates do not include labor costs, taxes and fees.
What is the rear window of a vehicle called?
Back glass also called rear window glass, rear windshield, or rear glass, is the piece of glass opposite the windshield in a vehicle. Back glass is made from tempered glass, also known as safety glass, and when broken will shatter into small, round pieces.
How do you tell if a window was broken from the inside or outside?
The direction of the glass. If the glass is inside the residence, the glass was broken from the outside. If the glass is outside the window, it was broken from the inside.
Does insurance cover rear window replacement?
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.