Well there is always hope they don't isn't there? Haha
And that whole thing depends on the in between the lines of the warranty contract. Like for my warranty if they have probable cause for what I mod causing the issue then I'm at risk for losing the warranty. So if headers get done wrong and cause a leak that leads to other issues then I could be at risk. A lot of contracts are different
In case your wondering, the roof is not my son. But I will raise it.