How to repair Gelcoat Part 2


This video segment is part two of a 2-part series that will show you how to do a simple non-structural gel coat repair.

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Notice: This work is licensed under a BY-NC-SA. Permalink: How to repair Gelcoat Part 2.

24 Responses to “How to repair Gelcoat Part 2”

  1. MegaNfj says:

    @gardee37 not a problem. dremmel them out wider than the actual stress fracture. key the area up with 120 grit and fill with chopped strand fibre glass. wait for that to cure and then sand back to a flush finish. gel and repeat the sanding process.

  2. SU83FIN says:

    you can use styrene in a cloth to wipe the final gelcoat layer to make it dry…or you can repair with topcoat. both ways will last as a repair, but of course the second way is much easier and more recommended ;)

  3. tapplastics says:

    If you apply gel coat with fibers, the repair will be conspicuous and not attractive. A better approach would be to grind down the area, apply some mat and resin, then top coat with gel coat. Once cured the gel coat will need to be sanded smooth and buffed to a shine.

  4. tapplastics says:

    @gardee37 The spider web lines are called ‘stress cracks’. If they radiate from a point, they could be the result of impact. Since they are recurring, they are more likely the result of some stress or flexing that was greater than the gel coat’s ability to absorb. The fact that they were repaired and returned indicates that any simple repair will be equally temporary. A permanent fix would involve reinforcing the area from behind to eliminate the flexing.

  5. quikvmax says:

    THANKS for posting this vid.

  6. gardee37 says:

    can I repair gelcoat/fiber glass spider web lines by drilling holes and apply gelcoat with fibers? these lines appeared years after a previous repair in same area.

  7. dickaldor says:

    Grea video! repairing my old boat due to me selling it. This video and the first one was great! To bad I cant get Tap products in Sweden.

    Thanks for sharing
    Dave

  8. tapplastics says:

    @denzzz28 Thickness of gel coat should be no thicker than  12 to 18 mils, it can’t be used as a filler.

  9. tapplastics says:

    @soccergal500 Not at this time.

  10. tapplastics says:

    @rubberduckno1 You can but it does take experience to get it to work right.

  11. rubberduckno1 says:

    Why not add Styrene wax to the last layer of gel coat?

  12. soccergal500 says:

    do you sell a kit with the plastic , sand paper etc.. for small repairs on jet ski

  13. denzzz28 says:

    tapplastics,

    how thick can the gel coat go? the round edge of my bumper has a hole about an inch wide and 3/4 inch deep. it looks like a bubble was created during the moulding process between the gelcoat and the fiber glass. i was thinking of filling it with gelcoat. will that work? thanks

  14. tapplastics says:

    It depends on the structure of the piece you are repairing. Some fiberglass has a clear coat added to the pigmented gel coat. This is most common when you see the metal flake designs. Otherwise, most fiberglass products do not have a clear coat.

  15. brandonbee2 says:

    i have a question, so gelcoat is the fill and clear, right? no need to re-clear coat?

  16. payjals says:

    thnks tap plastic.. :)

  17. smclaren67 says:

    Extremely helpful vid. Thank you tapplastics !

  18. kany0ne says:

    cheers! top info on fixing the 2nd hand boat I have just bought

  19. jop1007 says:

    do you put the plastic over the gel coat when the gel is still wet?

  20. startwiththeballs says:

    cheers

  21. FirstLight19 says:

    Very helpful. Thanks

  22. Gar91 says:

    same here

  23. stormy0375 says:

    thank you very much i brought my first boat and it has some gelcoat cracks in it and now i know how to fix them cheers

  24. matticus12345 says:

    thanks, now i know what to do if my dash or speaker boxes get messed up

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