Is this a problem with my roof?

[dgjonesyp]

I was up on the roof of my 2019 Eagle HT 27.5RLTS and I noticed roof discoloration along the roof underlayment seams (see photo). Is this normal ? On closer inspection I did not find any holes, cuts or breaks in the roof material or caulking faults. Also there are no roof leaks AFAIK.

Also I guess that the roof trusses are centered on the underlayment a seams ? Nice to know when I put up some solar panels on the roof !

[Shokyle1]

Let's hope it is not a problem mine looks similar.

[RogerR]

Mine looks like that, black lines where the roof truss are or something. No evidence of damage, just black that won't come off completely and comes back.

[Quantum]

2015, mine is the same.

No leaks.

[csper29605]

Mine is the same 2018 Jayco NP so don't think anything to worry about