Black strip on roof needs to be replaced.

[APACHE060]

Hello,

I am a new member so I hope I have come to the right place, I have a Ford Fiesta 2010 1.4 and on the roof there are 2 black strip's that go from the back to the front, these need to be replaced, can these be replaced as Ford told me that the strips were sealed, the strips have been on the car from new.

If these can be replaced can someone tell me how to do this and were I can get two new strips ?.

Thank you.