Sail cleaning and maintenance
There is an excellent article at the sailnet website (www.sailnet.com) called "Sail Care and Cleaning".But... I have taken a friends advise, and paid a sailmaker to do "maintenance" during the winter lay-up. This professional service includes washing the sails in a special cleaning solution that doesn't hurt the sail material, and the sail is then inspected seam-by-seam for damaged or failing stitching. On my original 1983 sails, they ended up replacing the batten pockets. The cost for this service was about $50 per sail, and well worth it in comparison to the cost of new sails.