How to: Rail Ding Repair on Painted Epoxy Surfboard or SUP

In this video we'll show you how to fix a rail ding on a painted epoxy standup paddleboard (SUP) or surfboard.

In this case we have a shallow ding with broken and cracked fiberglass, which is a pretty straightforward repair. The steps to do this kind of repair on a SUP or surfboard are:

1. Assess the damage
2. Mask off around damaged area and sand the cracked area away feathering out from the crack to the good areas.
3. Cut fiberglass patches to fill back the sanded out area, cut enough to slightly overfill the repair area
4. Apply epoxy resin and the fiberglass patches to the repair area
5. After the epoxy cures sand the repair fair, sand to 220 grit to prepare for paint.
6. Spray paint. If you get runs allow to cure and sand with 220 (wet usually works better)
7. Color sand to blend area with scotchbrite ultrafine pad and water and buff using surfboard polish #2

Materials used:

3M Sanding Block
Sand Paper Dry
Wet/Dry sand paper
Resin Research 2000CE epoxy
Peel Ply
Brushes
Fiberglass Fabric
Mixing Supplies
Nitrile Gloves
Scotchbrite Pad
Surfboard Polish #2
Buffing bonnet

[AL-okes]

Great video!! Been looking for something like this for about a week as I have an EPS board with carbon rails and didn't want to damage the carbon. So thanks, great tutorial.

[darinhintz]

Excellent step by step! My white coating is chipping off my old Pau Hana in spots so I think I just need to paint and blend.

[devanandaananda]

Awesome video. Thank you. I wonder if a dent on a fiberglass boat hull would take same steps to repair it.

[scottdaniels]

During step 4 wet the patch are you using the two part mixture or just the resin without the hardener? Please clarify if there are points in the repair when you would only use the resin or hardener individually vs as a mixture. Thanks!

[camiloroldan]

Can you guys do one with a huge hole on epoxy board! Ive seen people just put a new cut out eps foam or q cell with slow harder? What do you guys usually do?
Great video

[AB-fnkv]

Thanks for the video! How would the process differ for a poly board? I think I have a poly board. It's a surf paddleboard made in HI. I started sanding it and it has a strong sweet, chemical smell - I read online that's how you might tell the difference. Anyways, grateful for any additional tips.

[MarcelLaan]

Great vid. What is the peace of paper to hold the resin?

[DanieldaCosta]

What fibreglass fabric was used ? Any specification?

[juanfelipeprieto]

what was the piece of paper you put on the fiber glass

[Cuisinenomade]

Hi do you ever use microbaloons when fixing an epoxy resin board?

[davidcviele]

How far do you cut outside of simple 2”-3” cracks on the rails or tail before applying the resin and fiberglass?

[ryanstanley]

Thanks for the video. My son's board just was repaired and they didn't paint it to conceal the repair. What kind of paint did you use?

[aussiemonkey]

I have light surface scratches on my board what can i use to get them out ?

[alexmattice]

what kind of epoxy resin are you using? does fiberglass resin work?

[spencerlandon]

i have like 5 inch gash through the top of board. kid ran my girlfriend over. its epoxy but on the top not the rail and much larger. any suggestions? or supplies?