can Bondo wood filler get wet?

Bondo filler is a wood filler that can be used to repair rot and cracks on wood, as well as other materials. It’s also an epoxy that can help provide strength to the repaired area.

Bondo is waterproof and will not degrade over time in contact with water or moisture, like many other types of fillers. This makes it ideal for outdoor repairs both indoors and out.

Can you use Bondo on wood outside?

Bondo is not waterproof, and you don’t want it to be. Waterproofing Bondo would make it more expensive, and it’s already a fairly expensive product since you can only buy it in small cans.

Bondo is not epoxy, so if you’re looking for a really strong bond between two surfaces (like two pieces of wood), Bondo isn’t going to do that for you. It’s meant for filling holes or cracks in wood.

Bondo is not stronger than wood filler, but it will fill holes quicker than most wood filler products (and also offer some flexibility).

A good way to think about this is that bonding agent X will bond better than bonding agent Y because they have different strengths associated with them: one might be stronger when dry; one might be stronger when wet; one might be stronger under pressure from clamps; etcetera…

Is Bondo filler waterproof?

Bondo is not waterproof. Bondo can be used for indoor projects that will be exposed to water, such as a sink or dishwasher with a leaking water supply line, but it is not suitable for outdoor use.

Bondo can also be used on projects where moisture will be present as long as the surrounding area has good ventilation and no standing water; if you anticipate using Bondo outdoors or in an enclosed space with high levels of moisture, we recommend using other types of wood filler instead.

How long does Bondo wood filler take to cure?

The curing time for Bondo wood filler varies depending on how much you mix and the conditions of your environment.

The product generally cures in 24 hours, but it can take as long as a week or two. In most cases, it’s recommended that you wait at least two weeks to sand down your project after applying Bondo.

In extremely humid areas or if the temperature drops below freezing, it may take longer for your project to cure properly.

Is Bondo wood filler an epoxy?

Bondo is a polyester resin, not epoxy.

Epoxies are made by mixing epichlorohydrin with polyethers and/or polyesters to make high-strength adhesives that can be cured at room temperature.

These adhesives are very durable, but they don’t harden quickly enough for use as filler or paint primer. Bondo is used as a structural filler to fill in cracks and small holes in wood before painting it.

It dries so quickly that you have time to sand the Bondo and then paint over it within minutes of applying it!

Is Bondo stronger than wood filler?

Bondo is not as strong as wood filler, and it’s not waterproof. So if you’re looking for a material that can be used to repair holes in your boat’s hull or repaint your diving board, Bondo isn’t the answer.

But if you’re just doing some routine household repairs and need something to fill in cracks and dents, Bondo will get the job done just fine.

Plus, it costs less than epoxy—and since most repairs can be done with minimal effort and cost, this is definitely a plus!

Can you use Bondo to repair rotted wood?

Bondo is not designed for use on wood that has been rotted. In fact, Bondo is only intended to be used on wood that isn’t rotted.

If you’re trying to fix a piece of wood that has been damaged from rot, you’ll want to call in someone who specializes in this kind of thing.

Bondo can get wet and dry out once again when it’s exposed to air, but there’s no telling how long this will take—it all depends on how moist the damage was before applying Bondo in the first place and what kind of conditions are present where your project is located (think humidity and temperature).

Should I use Bondo or wood filler?

If you have a hole, dent or crack in a piece of wood that needs to be filled, there are two main options: Bondo and wood filler. Both products do the same job but each has its own advantages and disadvantages.

Bondo is a polymerized resin that is used to fill holes, dents, and cracks in wood. It’s very strong and durable but flexible enough for use on curved surfaces like roofs or boats.

Bondo can also be used as an adhesive for some applications such as attaching thin pieces of veneer plywood together without gluing them directly to your project.

This allows you more flexibility when working with thick materials because they don’t need to be completely dry before they’re applied together; however, this technique only works if both pieces are thinner than 1/8″.

What filler is waterproof?

Bondo is a two-part epoxy that can be used as an alternative to wood filler. It is waterproof, which makes it great for outdoor projects and furniture repair.

While Bondo may seem like an affordable option, it’s important to note that its strength comes at the cost of flexibility and easy sanding.

Therefore, if you’re looking for something that will hold up in a high-traffic area or withstand heavy use, Bondo may not be right for you.


If you’ve been using Wood Filler to repair woodwork, you may have wondered if it can get wet. The answer is yes, but there are some important things to keep in mind when doing so.

If you have any questions about whether or not your Wood Filler can be used in wet conditions, please consult your product label first for specific information on its durability and use.

Photo of author

Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

Leave a Comment