Often asked: Can I Use Bondo To Fix My Boat?

Can you use Bondo to repair a boat?

I wouldn’t recommend it. Bondo isn’t really meant for use in a marine environment. It would be better to repair the dings with something like MarineTex two-part epoxy instead, and then gelcoat over it.

Can you fix fiberglass with Bondo?

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.

Can you Bondo over gelcoat?

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

Will Bondo work on aluminum boat?

Using bondo on aluminum boat will hide corrosion. Or allow it to start corroding under the bondo. It’s not a good idea to put bondo on a boat.

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.

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Can you use Bondo to repair bathtub?

Bath tub repair can be simple. Bondo is mainly used on vehicles for repair but it can be used for repairing cracks in your bath tube. Bondo can be shaped into almost any shape once it has hardened and then it can by primed and painted. You will need a few tools and about 36 hours to repair the crack properly.

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.

Can I put body filler over fiberglass?

You can use regular body filler on fiberglass. It’s only on SMC panels used on later sharks that you can run into problems. If your car is a chrome bumper car (like in you avitar), you’ll be ok. Bondo Fiberglass Resins and Repair Kits are 100 percent waterproof.

Why is Bondo bad?

Unfortunately, filling compounds such as Bondo also present some drawbacks. Fillers like Bondo can crack if they are mixed too thickly, harming rather than improving the look of the car. Additionally, there’s a risk of discoloration and poor long-term wear when you use a dent repair filler like Bondo.

Can gelcoat be used as a filler?

Gel coat filler Both are brand names. Mix it in with your gel coat slowly or you may get lumps. Use the same amount of catalyst as with straight gel coat. If your gel coat has wax or surfacing agent in it, you must sand all the surface before adding any more filler or gel coat over it.

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Can you gelcoat over gelcoat with wax?

Gelcoat with wax has had paraffin wax added to it. When the gelcoat is catalyzed with MEKP, the wax rises to the surface throughout the cure, keeps the air from contacting the gelcoat, and allows the gelcoat to fully cure. If catalyzed with MEKP, gelcoat with wax will cure completely, in normal application conditions.

Will gelcoat stick to body filler?

The 3M Marine Premium Filler; gelcoat will adhere to it and is is sandable and can be uses above or below the waterline.

Does Bondo adhere to aluminum?

The Ease of Bondo® Filler, With Extra Strength This simple 2-part filler is reinforced with aluminum — great for use on fiberglass, metal, aluminum and even wood or masonry.

How do you use a 3m Marine filler?

Add 2% 3MTM Marine Creme Hardener (1 ½ inch strip* of cream hardener to a golf ball sized amount of filler). Mix filler and hardener to a uniform color making sure to break any air bubbles that may have been introduced. Mix only what you will use in 10 minutes.

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