A lap is when the fiberglass wraps around the rail to the other side of the board, providing more strength. When glassing the bottom of the board, the fiberglass '˜laps' onto the deck. When fiberglassing the deck, the fiberglass laps around the rail onto the bottom. The distance of the lap (measured from rail to stringer) has a effect of the board's overall breaking strength and flex. A longer lap will make a more snap-resistant, stiffer board because. A shorter lap will be a weaker and flexier board. A standard lap distance is about 1" in towards the stringer from the apex of the rail.
Subscribe for exclusive discount offers and more board building tips and tricks.
Make sure to add email@example.com to your contact list so you don't miss out!