How do I repair my G-SUP?

Although it’s unlikely that your G-SUP will sustain damage, particularly sharp objects, paired with excessive force, can penetrate the shell. The repair process of the G-SUP is different than a traditional epoxy repair because of its unique material. Though the repair process is simple, these repair steps should be followed thoroughly for best results.

Materials you will need:
-Polypropylene welding rod (We recommend using this 3/16” rod from Amazon but any polypropylene can be used. Warning: Do not use polyethylene plastic or any other plastic other than polypropylene)
-Household lighter
-Razor blade
-Sand paper
-Cleaner such as acetone or alcohol


Please follow the below steps carefully to successfully repair your board.

1. First clear out the damaged area by gently scraping with a razor blade.

2. Lightly sand the down the immediately damaged area. Next, clean any remaining dust and residue with acetone or rubbing alcohol and a paper towel.

How to repair your G-SUP

How to repair your G-SUP

3. Lightly flame treat the surface with a lighter by quickly running the flame atop the damaged surface. This increases the bonding strength of the polypropylene.

4. Flame the tip of your polypropylene rod. You want to let the rod burn until it drips and then immediately blow the flame out and apply the polypropylene to the damaged area.

5. When applying the polypropylene, place the rod near the damaged area and scrape the molten plastic off with a razor blade and push it into the damaged area. The razor blade can also be used to spread the plastic. Be sure to hold pressure to the plastic in the damaged area with the blade until the plastic cools and hardens.

How to repair your G-SUP

How to repair your G-SUP

6. Once cooled, scrape any remaining above-the-surface plastic off with a razor blade and sand the damaged area down if necessary. Your repair should be subtly noticeable.

7. If any edges of the repair do not seem to be bonded to the board, heat a corner of the razor blade with the lighter (use a glove if the razor blade gets too hot) and press the corner of the blade to the offending spot and hold pressure for 5--10 seconds or until the blade and plastic cool completely. This should bond the repair to the board.

Hard Board FAQs

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How do I repair a G-SUP?
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