$2.00

The Surfboard Studio - Fin Rovings

Fin rovings are crucial components in the construction and reinforcement of glass on surfboard fins. They are essentially long, continuous strands of fibreglass that are used to enhance the strength and durability of the fins.  Super easy to wet out, with a perfectly clear finish. 1M will do approximately 5 wraps so 2 strands per fin are required.  Reinforce rovings with fibreglass cloth on both sides of each fin for maximum strength.

Role of Fin Rovings in Surfboard Construction:

1. Strength and Rigidity:

  • Reinforcement: Fin rovings are used to reinforce the surfboard fins, adding significant structural strength. This is essential for fins, as they need to withstand considerable forces and pressures from water flow and the rider's weight.
  • Durability: The fibers in the rovings are aligned in a way that optimizes the fin’s ability to resist bending and breaking, thus increasing the lifespan of the fins.


2. Flex Control:

  • Performance Tuning: The stiffness and flex characteristics of surfboard fins can be finely tuned using fin rovings. Different types and arrangements of rovings can be used to achieve specific flex patterns, which can influence the board's handling and responsiveness in the water.

3. Weight Optimisation:

  • Lightweight Strength: Fin rovings provide a high strength-to-weight ratio. This means they can make the fins strong without adding unnecessary weight, which is critical for maintaining the performance and manoeuvrability of the surfboard.


Fin rovings are integral to the construction of surfboard fins, providing essential reinforcement that enhances strength, controls flex, and optimises weight. Whether used in traditional fibreglass fins or modern carbon fibre designs, they play a key role in ensuring the fins perform effectively and withstand the rigours of surfing.