30 cms vertical is a lot...but I have mended frayed linings in situ....you will need a small step stool, your ironing board set on high for giants (lol)..a steam iron and some wonder webbing...if you cant get wonder webbing or the eqiivalent use copydex and /or a few stitches to patch. (You should be able to get curtain lining fabric of the same colour and weight for pennies at the thrift shops) Good luck!
sally anne, November 2009