Can a car sunroof be sealed with glass glue?
2 Answers
Car sunroofs should not be sealed with glass glue, as the primary cause of sunroof leaks is usually aging or improperly sealed rubber gaskets, which require replacement. Using glass glue would permanently prevent the sunroof from opening. Method for replacing sunroof seals: First, slowly remove the old sunroof seal along its track and thoroughly clean the gaps. Then, firmly press the new seal into place along the sunroof's edge track. Leave drainage holes when installing seals: When installing the new seal, it's crucial to leave drainage holes. Otherwise, water won't drain properly from the sunroof and may seep into the car interior, potentially causing significant damage to the vehicle body.
Let me tell you, sealing the sunroof with glass adhesive isn't a reliable solution. There's intentionally a gap between the sunroof glass and the car frame to allow for thermal expansion and contraction of the glass. Applying adhesive would block this expansion space. During hot summer days, interior temperatures can reach 50-60°C, causing the glass to expand with nowhere to go—leading to sudden cracking. Moreover, regular glass adhesive isn't UV or water-resistant, typically cracking and yellowing within six months, allowing rainwater to seep in and mildew the headliner. If you must seal the sunroof, it's better to have it done professionally. Auto shops use specialized polyurethane adhesive that dries rubber-like with flexibility and UV protection. Besides, modern sunroofs use tempered glass that shatters into harmless small pieces when broken. Forcibly sealing it actually increases the risk of breakage.
