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Materials & Technologies

Creating the magic board

At Joistik Surfboards we use only premium blanks, highest quality fiberglass and resin, and work with Australia's best craftsmen.

PU 1000x700

PU Construction

Polyurethane construction (PU) uses traditional materials and laminating techniques to produce a strong, consistent surfboard with a high quality finish. The materials are robust, stable, and reliable to work with. Joistik PU boards are made using a polyurethane Core Industries foam blank with a plywood veneer stringer (others available).

After the board is shaped it is glassed at The Glass Lab using a premium polyester resin and Hexcel fibreglass cloth. These boards feature a flex pattern controlled by a high-grade timber stringer and will feel very reliable under your feet. PU construction will perform in all surf conditions and can be adapted to suit a wide variety of surfboard models.

Carbon fibre patches can then be added to the tail to prevent the rail/tail from excess wear and tear, as well as carbon fibre tapes along the bottom stringer to harness energy through turns and provide improved feedback from your board.

The result is a light, white high performance board that looks insane and surfs great too. PU construction is great for everyday use and performs in all types of waves and conditions.

EPS Construction

Premium grade EPS (Expanded polystyrene) foam is glassed with epoxy resin to create a strong, light, responsive board. EPS advantages include reduced weight, increased buoyancy, strength and floatation. An EPS board can result in improved paddling speed, buoyancy and manoeuvrability most notably in smaller surf.

Joistik Surfboards use premium grade US Blanks or Marko EPS foam EPS cores with veneer stringers which are glassed by Sel Surf using epoxy resin systems.

Epoxy resin is a healthier alternative to polyester as epoxy emits fewer volatile organic compounds than polyester resin, which means a decrease in harmful chemicals in the environment. EPS foam is also known for it’s great durability ensuring your board lasts a long time.

Karboload Technology

It is basic materials science theory. To best utilise the characteristics of carbon when dealing with the flex and energy feedback/return (i.e. for carbon to work effectively) it needs to be placed under tension in a linear fashion.

Nick Blair firmly believes Karboload is the only carbon/epoxy glassing layup out there where its two unique attributes, Parallel Performance (on the deck) and Y-Flex (on the bottom), work seamlessly together to best utilise the performance attributes of carbon. Our Karboload boards utilise carbon in this layup to best enhance it’s potential and flex/recoil properties. It is also the only tech to effectively manage this across all three planes of a surfboards flex: longitudinally, torsionally and transversely, but more importantly in the right places along the board.

Speed and response through rail transitions and turns is even and smooth and directly hinges off the surfer’s foot pressure and centre of gravity.  A major bonus is it is not an exclusive small-wave tech. Our testing has shown it maintains performance above 4 foot with the correct manipulation of flex through different fibreglass layups.

Importantly too, the carbon is utilised on the outer layers of deck and bottom- so that it is truly in tension when the surfboard flexes (in internal carbon laminates, the amount of tension and therefore energy feedback, decreases parabolically towards the centre of the core as the surfboard flexes).