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Build Guide/Foam & Resin Types

Foam & Resin Types

Understanding the materials that make up your board's core and shell.

Every Lundquist board starts with a blank (the foam core) and gets wrapped in fiberglass cloth and resin. Understanding the trade-offs between foam and resin types will help you choose what's right for your surfing.

Foam Types

Polyurethane (PU) — The traditional, most common choice. Affordable, warm feel, good float relative to weight. Industry standard for decades. Slightly less stiff than EPS.

Expanded Polystyrene (EPS) — Modern, lightweight alternative. Significantly lighter and stiffer than PU. Can feel chattery in small waves but excels in bigger surf. More expensive.

Polyester Foam — Budget alternative, similar characteristics to PU but slightly cheaper. Rarely used anymore.

Resin Types

Polyester Resin — Traditional resin used with PU foam. Affordable, reliable, standard. Heavier than epoxy but works beautifully.

Epoxy Resin — Modern resin that works with PU or EPS foam. Lighter, stronger bond, more environmentally friendly than polyester. Slightly more expensive. Creates a more durable board.

Combinations & Blake's Recommendation

PU + Polyester (Traditional) - **Pros:** Affordable, warm feel, time-tested - **Cons:** Slightly heavier than epoxy options - **Best for:** Budget builds, surfers who value tradition

PU + Epoxy (Blake's Preference) - **Pros:** Best of both worlds — polyurethane's forgiving feel with epoxy's durability and lighter weight - **Cons:** Slightly more expensive than PU + polyester - **Best for:** Most surfers; this is what Blake builds unless you request otherwise

EPS + Epoxy (Lightweight Performance) - **Pros:** Lightest option, very stiff, excellent in overhead surf - **Cons:** Can feel twitchy or chattery in small waves, requires careful handling - **Best for:** Experienced surfers looking for maximum performance in bigger waves

Blake's Approach

Blake typically defaults to PU + Epoxy because it delivers the best performance-to-durability ratio for everyday surfers. If you specifically want the lightest possible board, he'll steer you toward EPS + Epoxy with his standard heavy glassing schedule — the extra glass layers compensate for the EPS stiffness.

Budget constraints? PU + Polyester is a solid traditional choice and what most classic Lundquist boards were built with.

Visual Guide

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