Originally posted by JC: I have had them shift even in colder temps (but especially in hotter temps) if you put pressure on the feather for extended periods of time. It is simply one of the down-sides to the tape for me...the only other being it's not compatible with silicon based waterproofing. Neither of these are big enough to make me use anything else though, it's many benefits far out weigh it's two small shortcomings.