Asked by: Amane Volhard
sports surfing and bodyboarding

Is Bondo fiberglass resin waterproof?

Last Updated: 7th March, 2020

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This high-strength polyester resin creates waterproof repairs on metal, fiberglass and wood as well as seals concrete and rotted wood. Bondo Fiberglass Resin is waterproof and is compatible with all paints, including gel coat and marine paints.

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Likewise, does Bondo fiberglass resin dry clear?

exigeracer. Normal fiberglass resin does solidify yellow, but you can also buy clear fiberglass resin (it costs 30-40% from where I go). In liquid state it is blue, but dries up clear. Polyester resins also would achieve the same effect.

Similarly, is Fibreglass resin waterproof? Fiberglass cloth is absorbent by itself although the glass fibers are 'waterproof'. When forming a structure, it is the resin that fills the pores and prevents water absorption. So if the repair was coated with a decent coat or coats of epoxy resin, enough to leave no fibers exposed, it should be waterproof.

Similarly, can fiberglass resin be used alone?

Bondo Fiberglass Resin is the same high-strength polyester resin that is used to build most boats. It can be used alone or with fiberglass tape, cloth or mat to repair damaged fiberglass boats, snowmobiles, jet skis, bathtubs and showers and also be used as a sealer on damaged and rotted wood.

Can Bondo be used on fiberglass?

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.

Related Question Answers

Premislao Bentien

Professional

Is Bondo fiberglass resin epoxy or polyester?

Bondo Fiberglass Resin is designed for repairing cars, boats, snowmobiles, jet skis, bathtubs and showers. This high-strength polyester resin creates waterproof repairs on metal, fiberglass and wood as well as seals concrete and rotted wood.

Alcora Kauffel

Professional

Larisa Bazil

Explainer

What color is Bondo glass?

Product Details
Part Number: 272
Chemical Make Up: Styrene-Acrylic Polymer
Combustible: Yes
Container Type: Can
Dry Color: Gray

Rimma Lahidalga

Explainer

What is fiberglass resin hardener made of?

Ingredients in Fiberglass Resin. Fiberglass resin is used to repair the bodies of cars and boats. Completed, dry fiberglass resin is made of fiberglass cloth bonded to the car or boat with resin and a catalyst, to make the resin harden.

Soria Dwilies

Pundit

What is the catalyst for polyester resin?

MEKP (Methyl Ethyl Ketone Peroxide) is the catalyst added to polyester resins and vinyl ester resins. As the catalyst mixes with the resin, a chemical reaction occurs, creating heat which cures (hardens) the resin. Use approximately 1/2 oz per quart of resin.

Kia Zepp

Pundit

Will fiberglass resin waterproof wood?

Polyester resin is used for laminating fiberglass reinforcement, molds and, yes, waterproofing wood. Laminating resin will become hard but will remain slightly tacky to allow paint or more fiberglass to bond to it. Waxed or finishing resin can not be painted over without removing the top layer of hardened wax first.

Alain Della

Pundit

What is the difference between fiberglass resin and epoxy?

Polyester resin generally costs slightly less than epoxy resin. Once cured, polyester resin is water permeable, meaning water can pass through it eventually. The bonding strength of polyester resin is generally less than 500 psi. Polyester resin will not bond to epoxy resin.

Carmine Hofle

Pundit

What do you mix fiberglass resin with?

Set the fiberglass in a spot that is easily within reach. Add liquid hardener and resin in a small bowl in proportions as recommended by the manufacturer. Mix the two well using a plastic spoon or knife. Add the resin and hardener to the fiberglass cloth strips using the plastic spoon or knife used to stir the mixture.

Jone Andaloussi

Pundit

What temperature can fiberglass resin withstand?

Most resins that are used in the construction of fiberglass automotive parts will tolerate about 180 - 200* F before the resin starts to act weird. There is no set distance, if you see your hood or whatever getting hot and rubbery and the surface mottling some it's time for a heat shield.

Pasqualino Chala

Teacher

Which is better epoxy or polyester resin?

Polyester is an adequate adhesive but not as good as epoxy. As a general rule, the tensile strength of a polyester bond will be around 20 percent weaker than the same bond made with epoxy. That makes epoxy resin usually the best choice for fiberglass repair work. Use polyester for repairs that will be gelcoated.

Abdelkader Dorrio

Teacher

Will Bondo stick to fiberglass resin?

If the bondo has cured for more than 24 hours polyester resin will not chemically bond to it. However, if as has been said, you rough up the cured bondo with sand paper, you can achieve a mechanical bond with polyester or with epoxy resin.

Tayri Stanca

Teacher

How long does fiberglass resin last?

15 years old??? Polyester and epoxy resin systems both have a shelf life, but neither of them are anywhere near 15 years. Polyester has a max shelf life of 6 to 12 months from date of manufacture and the MEKP hardener 12 to 24 months.

Despina Mielgo

Teacher

How much weight can fiberglass hold?

You should be able to bring this in around 90-95 pounds.

Marcelli Piorno

Reviewer

Does Bondo fiberglass resin contain wax?

Bondo resin is a polyester laminating resin that will most definitely dissolve foam. Also, because it is a laminating resin it does not contain any wax and will cure "air inhibited" (translate that to "stickey").

Shahid Sauzedo

Reviewer

Will fiberglass absorb water?

Strands of fiberglass, either "E" or "S" type, do not themselves absorb any water. None. Put a glass bottle in water as long as you like and it will not dissolve, gain weight, or lose strength as a result of its exposure to water. (It can, however, be eroded by water flow of sufficient pressure and speed.)

Petronella Widder

Reviewer

Does fiberglass need to be sealed?

Sealing fiberglass is a necessary step to protect and even out the finish. Other than that, there are few differences from sealing wood or metal. Rough-sand the surface of the fiberglass using a sanding pad and sandpaper, or orbital sander and sanding disc for larger surfaces.

Aketx Vinterfeldt

Reviewer

Can fiberglass get wet?

Drying out fiberglass is not always possible or successful. Once fiberglass gets wet, it tends to compact and lose its insulating abilities. In addition, wet fiberglass is an ideal breeding ground for mold and animals.

Ikhlas Kloppenburg

Supporter

What happens if fiberglass gets wet?

Glassfiber insulation is made from strands of glass fiber and temporarily loses its thermal resistance when it gets wet. However, if it can dry out and has not become compacted, it will retain its insulating properties. Wet insulation in a closed wall cavity will usually not rapidly dry out.

Justo Rahona

Supporter

Can you spray fiberglass resin?

Resin is a thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid. Polyester resin also is used for gel coat, which is fiberglass paint that has to be thinned for spray application. Polyester resin can be thinned out using no more than 10 percent acetone.