cockpit cover material
Sunbrella is indeed waterproof/water resistant (and breathable) although the integrity of the waterproofing typicaly will last only a minimum of 5 years; thereafter, you should recoat with Apseal 303 - recommended by the manufacturer of Sunbrella. For purchase dont even think about getting Sunbrella through a ''boat store''. It''s ultimately better to get the material from a wholesale commercial distributor (one who deals directly with the upholstery trade)... although you will need ''cash on the barrel head''. Be aware that there are several grades of sunbrella.