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Fiberglass is used to build boats for many reasons. Chief among these are its immovability, but also its easy to repair. Yous tin patch boat holes in an afternoon and fiberglass a gunkhole in just a couple of days. This article covers how to fiberglass a boat using epoxy resin.

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  1. 1

    Gear up the boat for cobweb-glassing. Before you brainstorm the process of applying fiberglass to your boat, you lot need to prepare the gunkhole. There are several preparations to consider.

    • Removing extra items from the lesser of the boat. You should remove the keel, whatsoever elevator stakes or rails, and annihilation else that should not be covered in fiberglass.
    • Repair any holes with appropriate filler. To repair a hole, cutting out the damaged section, wash and apply a dewaxing solvent, grind the expanse with a deejay sander, utilise a laminate or acrylic patch to the outside of the hull with polyvinyl alcohol (PVA) mold release, apply a fiberglass patch measured and cut to fit the hole. Apply resin, echo the fiberglass/resin application process as necessary and add hardener.[1]
    • Clean the hull of the boat. The hull should exist clear of debris, barnacles, dust, clay and mold.
    • Sand the boat. For best results, the surface should exist a little rough.[2] Too much sanding can crusade rippling.
  2. 2

    Mix resin and hardener co-ordinate to package directions and pour the solution into a paint tray immediately. After about 30 minutes, the solution should exist significantly hardened and set to apply to the hull of the gunkhole.

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  3. three

    Apply the kickoff coat of resin. This starting time coat is called the seal coat. Using a foam roller, utilize house pressure and directional strokes to spread the resin as evenly as possible. Wait for the surface to no longer exist tacky before doing boosted work on the hull.[iii]

  4. 4

    Prepare and install the fiberglass material. Cut fiberglass cloth to the shape needed.[4] Attach the fiberglass cloth to the hull using tape, tacks or staples.

  5. five

    Apply a second coat of resin. This glaze is called the bail coat. If yous take waited for a while, consider sanding the hull again. Working from 1 end of the hull to the other, utilise the bond coat over the fiberglass cloth. Remove the material you take used to attach the fiberglass cloth to the gunkhole before the bond glaze sets up completely.[5]

  6. 6

    Use another coat of resin. This glaze is known as the fill glaze. Wait for the previous glaze to set hard. If y'all have waited a meaning period of time, make clean and sand the hull again.[6]

  7. 7

    Utilize a final coat of resin. The terminate glaze should be smooth and fifty-fifty, but should also be thick plenty to allow you to sand the hull evenly without damaging the material.

  8. viii

    Sand the hull. Give the last coat plenty fourth dimension to dry out, preferably overnight. Use lower grit paper at beginning and finish with a higher dust paper.

  9. 9

    Apply a protective agent. This tin exist pigment or another boat hull cease. Utilise the protective amanuensis according to the package directions.

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Add New Question

  • Question

    I have accidentally drilled a 3mm hole where the boat goes on the skidbar; how tin I repair it?

    Community Answer

    Make clean the hole, crude upwardly around hole, and fill with dowel rod sand. Go over with a fiberglass mat and resin.

  • Question

    What is wrong if my fiberglass resin is nonetheless tacky subsequently several days?

    Community Answer

    Probably not enough hardener, or the hardener was mixed in unevenly and you had some portion of the resin mix that has no hardener in it. You might have to grind information technology off and start once more or go it out using solvent. Another reason might be temperature. It'll need a certain amount of heat to cure. It'll have a long time to cure in the cold.

  • Question

    How do I repair an old fiberglass boat transom?

    Community Answer

    Cut out the inside wall, remove wood, clean out debris, cut new wood to size, install fiberglass mat, and resin several coats.

  • Question

    I accept bought a ready-fabricated wooden boat. Is it advisable to fibre drinking glass the bottom of the boat? Or should I merely leave information technology as it is?

    Community Answer

    No, do not do that, every bit moisture will get trapped and it will stop up rotting. Instead, utilize a skilful marine paint, such as international yacht loftier gloss. Yeah, information technology requires more endeavor but the boat volition terminal longer.

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  • Work in a shaded, dry out area, preferably with a temperature between lxx F and 85 F (21 C and 29 C).

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Things You'll Need

  • Dewaxing solvent
  • Belt sander
  • Mold release
  • Fiberglass textile
  • Fiberglass resin and hardener
  • Protective agent

References

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