Often asked: Can I Use Bondo On Fiberglass Boat?

Can I use Bondo on my boat?

Bondo should never be used on a boat.

Will Bondo work on fiberglass boat?

Fiberglass Bondo is waterproof, extremely strong and can be used for virtually any fiberglass panel. DO NOT use Bondo on a boat, it will swell up when wet. You can use regular body filler on fiberglass. It’s only on SMC panels used on later sharks that you can run into problems.

Can Bondo body filler be used on fiberglass?

Bondo Body Filler cures fast, shapes in minutes and is formulated to be a non-shrinking and permanently durable material. In addition to its uses on vehicle exteriors and other metal surfaces it is also a suitable repair option for wood, fiberglass and concrete.

What is the best filler for fiberglass boats?

3M Marine High Strength Repair Filler restores damaged areas of fiberglass hulls, decks and other areas on boats. This filler is a high performance product that is reinforced with short strands of fiberglass for added strength. Boat restoration professionals commonly use this product.

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Can I put Bondo over fiberglass?

Things You’ll Need Fiberglass Bondo is waterproof, extremely strong and can be used for virtually any fiberglass panel. As an initial matter, it must be recognized that there is Bondo for metal and Bondo for fiberglass. Ensure that the Bondo for fiberglass is used.

Can I gelcoat over Bondo?

bondo has a polyester resin base so ya polyester fiberglass resin (or gel-coat) will bond fine.

Can you use spot putty on fiberglass?

This spot and glazing putty is ideal for spot repairs and other small repairs to auto body panels. Use it for filling pinholes in body filler as well as for covering minor sand scratches, and more on metal, fiberglass and wood as well as sanded and primed or sanded and painted surfaces.

Is fiberglass or Bondo better?

I primarily use fiberglass to cover up weld areas the fiberglass putty will resist water and keep everything sealed up so you dont’ get rust in those joints then I sand that down, and apply the bondo over that, real thin, just to fill in the holes and give it a smooth look.

How thick can you apply fiberglass filler?

3. Apply a thin layer using firm pressure to ensure maximum adhesion being sure to “wet out” the surface completely. Apply additional filler in layers, building up the damaged area higher than the surrounding surface. Maximum filler thickness should not exceed 1/4 inch.

Can you use filler on fiberglass?

What can fiberglass filler be used on? This filler can be used over bare metal or fiberglass. In auto body, it is normally the first coat applied over welded repair.

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Should I use fiberglass or body filler?

Fiberglass filler is much stronger and harder than regular body filler so anywhere the filler needs extra strength is a good place for fiberglass filler. I rarely use long strand filler because it can’t be spread as smoothly but when a large area needs the strength the long strand is usually the material needed.

What type of fiberglass cloth is used for boats?

General Description: Woven fiberglass cloths are very common for marine & composite construction and repair. Light weight cloths tend to provide a smooth finish and are excellent for producing a waterproofing layer over wood or other surfaces when combined with the appropriate resin.

Can you repair fiberglass with epoxy?

One reason that an epoxy product such as WEST SYSTEM® Epoxy is so useful for fibreglass boat repairs is that it’s an incredibly effective adhesive. It creates a resilient bond to fibreglass, cured polyester laminates, wood and metals – even when you only use a thin film.

What is gelcoat filler?

GELCOAT FILLER is a white, waterproof gelcoat filler for surface repairs. It is paintable, easy to mix, apply, shape and sand. Suited to marine paint, can be pigmented or painted with any marine paint. Use with glass-fibre Mat for structural repairs to GRP and can be used on glass-fibre or gelcoat.

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