the first quilt i made in 1976 is still around- still used- and no seams have ever frayed...so, no i guess i don't worry about it- once a quilt is layered with batting & backing & quilted there would be no reason for the seams to ravel- unless it is a very loose weave fabric-but i've made quilts with home-spuns which are a bit looser weave & have not had the problem with them either...there is only risk of fraying when it is still an unfinished top...once it is finished the seams are (protected)