What Causes the Roof Fabric to Detach?

2 Answers
DiJohn
08/26/25 3:04am
The reasons for the sunroof fabric falling off are as follows: 1. Aging of the roof; 2. Sunroof leakage; 3. Failure to close during rain, leading to water soaking the fabric. Solution: It should be replaced promptly, as this type of fabric may mold and emit odors, affecting the hygiene and health inside the car. Below is additional information: 1. Edge adhesive failure of the roof fabric: The glue at the edges is highly susceptible to degradation, resulting in a shorter lifespan. Solution: Use hot melt adhesive, adhesive foam, or even double-sided tape to reinforce the adhesion along the edges. 2. Roof fabric bulging: Roof leakage due to prolonged sun exposure causes loss of adhesive properties in some areas of the foam, or even comprehensive issues with the roof, which may require roof removal. Solution: It is recommended to visit a repair shop for servicing.
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VanEva
09/08/25 3:21am
The most common reason for a sagging headliner is adhesive failure due to aging. I've seen countless vehicles with this issue - prolonged sun exposure dries and brittles the glue through UV damage, causing the fabric to detach with vibration. Some older cars show this prominently on hot days, with the liner drooping when doors open. Others use substandard adhesives, failing within two years on new cars. Winter shrinkage causing material separation is another frequent cause. During maintenance, inspecting adhesive seams is crucial - address any looseness or bubbling early to prevent full detachment. Avoid pressure-washing glued areas when cleaning to preserve adhesion. Timely repairs ultimately save significant cost and hassle.
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