Repairing A Paddleboard: Fixing Inflatable and Hard Boards

Repairing A Paddleboard: Fixing Inflatable and Hard Boards

Paddleboarding is one of the best ways to enjoy Hawaii’s beautiful waters, and whether you’re cruising the shoreline or catching waves, a well-maintained board is key.  

But even the most durable paddleboards can suffer dings, punctures, or wear over time. Knowing how to identify damage and make repairs can extend your board’s life and keep you on the water longer. 

In this guide, we’ll walk you through how to repair both inflatable and rigid (epoxy or fiberglass) paddleboards, from quick fixes to more involved restoration. 

Common Paddleboard Damages 

Before diving into the repair process, let’s review some common types of paddleboard damage: 

Inflatable SUP Damage: 

  • Punctures from rocks or coral

  • Seam leaks or blowouts 

  • Valve leaks 

  • Sun damage or UV degradation 

Hardboard Damage: 

  • Pressure dings (small compressions on the surface) 

  • Cracks or holes in the fiberglass shell 

  • Delamination (separation between layers) 

  • Nose or rail damage from impact 

Knowing the type and extent of damage is the first step in determining whether it’s a DIY job or something best left to a professional. 

How to Repair an Inflatable Paddleboard 

Inflatable stand-up paddleboards (iSUPs) are made of PVC with drop-stitch construction. When properly inflated, they’re ridgid—but when they do get punctured or develop leaks, they’re usually fixable at home. 

Step 1: Find the Leak 

Start by inflating the board to full pressure and listening for hissing. If you can’t find it easily: 

  • Mix dish soap and water in a spray bottle. 

  • Spray it over the board, especially around seams, valves, and suspect areas. 

  • Bubbles will form at the leak. 

Tip: Mark the leak with a waterproof marker or masking tape. 

Step 2: Clean and Dry the Area 

Once you locate the hole: 

  • Completely deflate the board. 

  • Clean the area around the leak using isopropyl alcohol. 

  • Let it dry thoroughly. 

Step 3: Apply the Patch 

Most inflatable SUPs come with a repair kit. If not, you can purchase a PVC repair kit. 

  • Cut a patch about 2 inches larger than the hole. 

  • Apply PVC glue to both the patch and the surface of the board. 

  • Wait a few minutes until the glue becomes tacky. 

  • Press the patch firmly onto the leak. 

  • Place a heavy object over the patch and let it cure for at least 12 to 24 hours. 

Step 4: Check the Valve 

If your board is leaking around the valve: 

  • Use a valve wrench (usually included with your board) to tighten it. 

  • If tightening doesn’t help, you may need to replace the valve. 

How to Repair a Hard Paddleboard 

Hard paddleboards (usually made of EPS foam with fiberglass or epoxy resin) are rigid and responsive, but they’re more vulnerable to cracks and dings. Moisture can seep into the foam core if the outer shell is breached, so quick repairs are crucial. 

Step 1: Assess the Damage 

Is the damage superficial, or has it penetrated to the foam core? 

  • Superficial damage (light scuffs and paint loss) doesn’t need repair. 

  • Deep dings (exposed foam or fiberglass cracks) must be fixed ASAP to prevent water damage. 

If water has already seeped into the board: 

  • Open the area slightly to ventilate. 

  • Allow the board to dry completely for 2–3 days before attempting any repairs. 

Step 2: Clean and Sand the Area 

  • Use sandpaper (60–100 grit) to remove any loose or damaged material. 

  • Clean the area with acetone or rubbing alcohol. 

Step 3: Prepare the Repair Materials 

You’ll need: 

  • Epoxy resin (for EPS foam boards) 

  • Hardener 

  • Fiberglass cloth or patch 

  • Mixing cup and stir stick 

  • Sandpaper (100 to 400 grit) 

  • Protective gloves and a mask 

Note: Don’t use polyester resin on EPS boards, as it melts the foam. 

Step 4: Patch the Ding 

  • Mix a small batch of epoxy resin and hardener. 

  • If needed, cut a piece of fiberglass cloth to fit over the ding. 

  • Apply a thin layer of resin to the ding. 

  • Place the fiberglass patch over the resin. 

  • Apply more resin on top and sand it smooth. 

  • Let it cure for 6–12 hours, or as instructed by the product. 

Step 5: Sand and Finish 

Once the resin has cured: 

  • Sand the repaired area, starting with 100-grit, then 200-grit, and up to 400-grit for a smooth finish. 

  • Optional: Apply a paint or clear coat for aesthetic appeal and added protection. 

When Should You See a Pro? 

While many repairs can be done at home, there are times when it’s worth visiting a professional: 

  • Large cracks or deep impact damage 

  • Delamination or internal foam damage 

  • Uncertainty about the materials or safety of a DIY fix 

Paddleboard Repair Tools & Kits: What to Keep on Hand 

Having a few essentials can make your day at the beach more enjoyable. Here’s what we recommend for a basic paddleboard repair kit: 

Inflatable SUP Repair Kit: 

  • PVC patches 

  • PVC glue (marine-grade) 

  • Valve wrench 

  • Alcohol wipes or cleaner 

  • Masking tape 

Hardboard Repair Kit: 

  • Epoxy resin and hardener 

  • Fiberglass cloth 

  • Mixing cups and stir sticks 

  • Sandpaper (various grits) 

  • Acetone 

  • Razor blade or utility knife 

  • Protective gloves and a mask 

You can find many of these hardboard repair supplies at our shop at Surf N Sea, your go-to for locally trusted gear and expert advice.  

How to Prevent Paddleboard Damage 

Regular maintenance and smart paddling habits can help avoid the need for repairs. 

Do: 

  • Rinse your board with fresh water after every session. 

  • Store your board in a cool, shaded spot. 

  • Use board bags for protection during transport. 

  • Check for dings and leaks regularly. 

Don’t: 

  • Drag your board across rocky beaches or pavement. 

  • Leave your board in the sun for extended periods of time. 

Stack heavy objects on top of your board during storage. 

Eco-Friendly Paddleboard Repair 

Many modern repair kits use low-VOC and environmentally conscious materials. If you’re passionate about keeping Hawaii’s oceans clean, opt for eco-friendly products and responsibly dispose of old materials and packaging. Surf N Sea proudly supports sustainable surf practices and can help recommend greener repair options. 

FAQs About Paddleboard Repairs 

  • How can I tell if my hardboard paddleboard has water damage?
    If your board feels heavier than usual or you hear water sloshing inside, it may have absorbed water through a crack. Let it dry completely before attempting to repair it.
  • Can I use duct tape as a temporary fix?
    Duct tape can temporarily stop air loss or prevent further water intrusion, but it’s not a long-term fix. Always follow up with a proper repair.
  • How long does an inflatable SUP patch last?
    A quality PVC patch can last for years if applied correctly. Be sure to follow curing times and avoid excessive heat or pressure.
  • Should I repair a delaminated board?
    Delamination is severe and often requires professional repair. DIY attempts can exacerbate the issue if not handled correctly.
  • Can I use epoxy on all paddleboards?
    Use epoxy resin only on EPS foam boards. Using polyester resin can cause the foam core to melt. When in doubt, consult your board’s manufacturer or a repair expert. 

Take Good Care Of Your SUP! 

A damaged paddleboard doesn’t have to mean the end of your ocean adventures. Whether you’re patching a small leak in an inflatable SUP or repairing a crack in your fiberglass board, knowing how to assess, clean, and fix damage will keep your gear performing well for years to come. 

Do you need repair supplies or want expert advice? Visit Surf N Sea in Haleiwa - our knowledgeable team is here to help you repair, restore, and ride again. 

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