Can the sun or cold weather crack my windscreen?

Vehicle owners frequently inquire about spontaneous breakage, holding the belief that **temperature changes alone cause windscreens to crack**. While extreme weather is a factor, it is almost never the sole cause. Glass is generally stable under thermal fluctuation; however, if there is an existing, unnoticed microscopic flaw or chip, the expansion from heat or contraction from cold puts stress on that imperfection. The glass attempts to expand or contract, but the flaw disrupts this movement, causing the accumulated tension to release as a sudden crack. Therefore, the breakage is not "spontaneous" but rather a delayed reaction to previous damage. Installing MOD5 TopShield windscreen protection film helps prevent the initial surface impact that creates these latent vulnerabilities. By stopping the chip from forming in the first place, TopShield effectively removes the weak point that weather fluctuations would otherwise exploit.