Pressure Ding vs Crack: When Your Surfboard Actually Needs Repair

Pressure ding vs crack when to repair your surfboard is the question every traveller asks while standing in a car park, board in one hand, phone flashlight in the other.

Both can look like “just a mark.” Only one is obviously drinking the ocean. The other is a quiet structural insult. In Bouznika I see both every week. Here is how we sort them in the shop — prices and booking are on board repair.

The crack (open glass)

This is the honest hole.

• You see foam (white, yellow, or brown)
• The glass is chipped or folded
• A fingernail catches
• After a session the ding feels wet or the board feels heavier
• You hear a pssst of air when you press around it (not always, but when you do, stop guessing)

Open glass on a PU board is a race. Foam is a sponge. Salt water plus sun plus two more sessions is how a 200 dh ding becomes a delam quote.

First aid: rinse with fresh water if you have it, dry, tape, come in. Do not “one more hour.”

Small open dings: 100 dh. Moderate: 200 dh. Rails and tail blocks are often the moderate column even when they look tiny from the beach.

The pressure ding (crushed foam, skin still there)

The deck has a thumbprint. The glass might still be glossy. No obvious hole.

What happened: impact compressed the foam. The sandwich is now thinner there. On a wave, that spot flexes differently. On a thin performance board, it can flatten the rocker in a way you feel even if you cannot explain it.

On a thick soft-top, a knee dent is ugly and sometimes still fine for a beginner week. On a 28-litre shortboard, a deep chest-to-deck pressure ding is a repair — 150 dh on our menu — before it star-cracks and becomes an open job anyway.

The in-between: hairline and spidering

White stars around a dent mean the glass already failed even if foam is not showing yet. Treat that as a crack in progress. Tape is theatre.

If the board is epoxy, hairlines can be sneakier — the cloth behaves differently. Do not diagnose from a meme. Bring it. PU vs epoxy is the chemistry companion to this article.

A two-minute beach test

1. Dry the board. Wet gloss hides everything.
2. Look in side light, not noon glare.
3. Press around the mark with a thumb. Soft, wet, or crunchy is bad.
4. Check the inside of the rail — people stare at the logo and miss the hit.
5. Smell. A sour, old-wet-foam smell is information.

If you are still unsure, that is a 150–200 dh question, not a philosophical one.

When we tell you to keep surfing

Cosmetic scuffs on a sacrificial foam school board: surf. A sealed, shallow pressure mark on a log you barely stand on: maybe surf, watch it.

When we tell you to stop: anything open, anything on a rail that is folding, anything that got heavier overnight, any fin box that moved (that is 500 dh and not a ding debate).

Travellers and the last-day problem

You ding it on Thursday, you fly Saturday. Tell me Thursday. A small dry crack can sometimes be closed. A soaked rail cannot be honestly cured in a night just because the airline is unmovable.

If you live in Casa and surf Bouznika on weekends, do not collect five “I’ll deal with it” dents. Ten-plus dings on one board is 40% off, but that discount is a monument to neglect.

Pressure ding or crack — both are the ocean leaving a note. Read it in daylight, not after the foam has had a drink. Then walk it to the shop.