PU Surf Technology in Detail
PU construction is the historical benchmark for high performance surfboards. It combines polyester resin with a polyurethane foam blank and a central wooden stringer. This is the most traditional construction, the one that shaped the feel of modern shortboards and remains the preferred choice of many demanding surfers.
The 50 kg/m³ Bennett polyurethane foam blank provides greater density and places more mass at the heart of the board. This creates a very distinctive feel: smoother, more composed and more connected to the wave. The board naturally absorbs surface chatter, forgives small mistakes more easily and maintains exceptional composure at high speed.
The 3 mm to 5 mm wooden stringer reinforces the board along its entire length. It helps prevent excessive flex, works in harmony with the natural flex characteristics of the PU blank and delivers the smooth, progressive rebound that defines this construction. Compared with EPS, the flex is less reactive but more organic, fluid and confidence inspiring, especially through committed turns.
The polyester resin and fiberglass layup is carefully engineered to achieve the ideal balance of strength, weight, flex and feel. The deck features 2 layers of 6 oz fiberglass to withstand repeated foot pressure. The bottom uses either 4 oz + 6 oz fiberglass or 2 x 6 oz, depending on the board, allowing the construction to be optimized for each shape and intended use.
A large 4 oz fiberglass reinforcement patch strengthens the tail and fin box area. This section of the board is subjected to the greatest loads: back foot pressure, torsional forces during turns, stresses around the fin boxes and occasional impacts. The reinforcement increases durability without compromising the board's natural feel.
Every board begins with CNC pre-shaping to ensure absolute consistency in volume distribution, rocker, bottom contours and overall outlines. But shaping a surfboard goes far beyond machine work. Each board is then checked against traditional templates before being finished entirely by hand, ensuring perfectly refined rails, seamless transitions and the touch of a true master shaper.
The matte finish reflects the board's performance-oriented DNA. It offers a clean, understated appearance, is less prone to showing scratches and highlights the purity of the shape. It is a practical, no-nonsense finish designed for serious surfing.
PU construction is also easy to repair after impacts using the appropriate polyester repair systems or UV-curing polyester resin. The polyurethane blank itself is hydrophobic, meaning it does not absorb water if the board is damaged, reducing the risk of long-term issues when repairs are carried out promptly.
On the water, PU delivers a board that feels smooth, composed and exceptionally connected to the wave face. While it offers less instant rebound than an EPS construction, it provides outstanding speed control, inspires confidence when engaging the rails and remains remarkably stable in fast or powerful surf.
It is the preferred choice of surfers who favour deep rail engagement, clean lines, high speed control and the timeless feel of a classic high performance surfboard. Rather than generating explosive rebound, PU delivers smooth, flowing turns with exceptional continuity.