
- The best wax to use for restoring your gelcoat is marine wax. It's specifically designed for use on boats and it's waterproof. ...
- Use a cloth if you're applying the wax by hand.
- Use a foam pad if you're applying the wax with a buffer.
Full Answer
How do you repair gelcoat?
Wax gelcoat is the best option to repair gelcoat because it will cure in the air without any additional components needed. 2 Mix the new gelcoat according to the manufacturer’s instructions. Pour the amounts of each part recommended by the manufacturer into a plastic or paper disposable cup.
Will gelcoat stop my boat from damaging?
Though the gelcoat will help prevent your boat from further damage, it is important to remember that you may still need to make repairs to the boat and not just rely on the gelcoat. The first thing you will need to do before applying gelcoat on your boat is to make sure your boat is completely cleaned.
How do I match gelcoat to my boat?
For current boats, your dealer might be able to supply matching gelcoat. But due to weathering on your boat, it may not match. There are kits from companies such as Evercoat with pigments to add to the resin for a match. If you have a sample, you can match a gallon of gelcoat from Rayplex Composites (fibreglass.com).

Can gel coat on a boat be repaired?
For minor cracks, scratches, and gouges, you can purchase a DIY gelcoat repair kit to fix the bottom of your boat quickly and easily. Here is our simple step-by-step guide to gel coat restoration.
How do you fix gel coating on a boat?
Wet-sand the cured gelcoat with 320-grit wet/dry paper on a soft sanding block. Confining work to the immediate repair area, continue wet-sanding with 600-grit paper until nearly even with surrounding gelcoat. Finish wet-sanding with 1,000-grit paper; then buff out with rubbing compound followed by a coat of wax.
How do you fix gel coat on Hull?
0:296:535 Easy Steps to make a good Gel Coat repair on your boat - YouTubeYouTubeStart of suggested clipEnd of suggested clipSimply clean the surface with a brush. And secondly with some acetone the acetone will remove allMoreSimply clean the surface with a brush. And secondly with some acetone the acetone will remove all the dust particles. And also allow the gel coat to adhere. Better to the hull.
Can you gelcoat over gelcoat?
Can You Spray Gelcoat Over Gelcoat? The short answer's yes. But first, make sure the surface is free from dirt and debris. Using the window frame analogy again, you wouldn't apply new paint over old paint without preparing the surface.
How do you repair a gel coat on a fiberglass boat?
2:195:22How To Repair Boat Gelcoat [MATERIALS LIST ] | BoatUSYouTubeStart of suggested clipEnd of suggested clipI thoroughly mix the Jocko and the catalyst together. And all I'm going to do is use one mixingMoreI thoroughly mix the Jocko and the catalyst together. And all I'm going to do is use one mixing stick. And drop it into the crack. And just tap it to make sure that there's no trapped air bubbles.
How do you restore gel coat?
0:242:47How to Restore Gel Coat - YouTubeYouTubeStart of suggested clipEnd of suggested clipWith a liquid oxidation remover or a wax or any other liquid. Be real careful not to hit that powerMoreWith a liquid oxidation remover or a wax or any other liquid. Be real careful not to hit that power button before it's up against the side of the hull or else the wax will go flying.
Will Marine Tex stick to gelcoat?
Marine Tex is fuel resistant (gasoline, diesel) and is suitable for repairs where fuel exposure is possible. It can also be used for gelcoat repairs.
Can I paint over gelcoat?
If the gelcoat is in good condition with no major cracking or crazing, the job is relatively straightforward—clean and prepare the surface, apply an epoxy primer, sand the primer, remove the sanding residue and then apply the topcoat. So, the gelcoat on your boat is looking chalky and faded.
Can you apply gelcoat with a brush?
Applying Gelcoat by Brush or Roller – (Use a Brushable Gelcoat) When applying gelcoat by brush or roller, we recommend the Ultra Plus Brushable Gelcoat. (other Gelcoats are best applied by Spray) The Ultra Plus Brushable Gelcoat is designed for self-leveling and is a much easier application.
Do you have to sand between coats of gelcoat?
Sanding between coats is not necessary unless a surfacing agent has been added to your gel coat. Once your repair is covered, feather a 'flow' or sanding coat on the masked-off area making layered passes to avoid a buildup of gel coat in any one area. Each of these coats of gelcoat may involve several passes.
How thick can gelcoat be applied?
20-25 milsSpraying gel coat is recommended for more accurate and consistent coverage. Apply gel coat in 4-5 layers at approximately 5 mils each, allowing 15-20 minutes between layers for a total thickness of 20-25 mils. Use #122-A Gel Coat Thickness to ensure proper thickness is achieved.
Is gelcoat waterproof?
GelCoat is specially formulated to be water-resistant and highly durable. GelCoat cures hard with a self-leveling finish, even on vertical surfaces. This formula is also resistant to water blistering from frequent use.
How do you restore faded gelcoat on a boat?
0:096:07Restoring Heavily Oxidized Gel Coat - YouTubeYouTubeStart of suggested clipEnd of suggested clipThis is 3m rubbing compound. And it works great for polishing out the scratches.MoreThis is 3m rubbing compound. And it works great for polishing out the scratches.
How do you restore oxidized gelcoat on a boat?
5 Steps to Restoring Oxidized GelcoatWash and Remove Surface Dirt and Debris. The first step to removing oxidation and giving your boat a new look entails washing and eliminating every form of surface dirt. ... Removing Stains. ... Wet/Dry Sanding. ... Polishing Compounds. ... Waxing and Sealing with Protectant.
How do you remove oxidation from a boat with gel coat?
3:545:35Remove Gel-Coat Oxidation - Boat Detailing Extreme Makeover!YouTubeStart of suggested clipEnd of suggested clipWe use rotary buffers with wool pads. And the initial step we did with the marine 31 gel coat heavyMoreWe use rotary buffers with wool pads. And the initial step we did with the marine 31 gel coat heavy cut oxidation cleaner that's an aggressive compound. And then for the follow-up.
How do you restore the gel coat on a bass boat?
0:483:49Restore Faded Bass Boat Gelcoat with Poli Glow - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou a lot of time and money by not having to sand down the gel coat. And then spray new gel coat orMoreYou a lot of time and money by not having to sand down the gel coat. And then spray new gel coat or even painting it you could literally restore.
Q: How do I repair a gouge in a fiberglass boat?
A: Fill the gouge with filler and sand out any other scratches while waiting for the filler to cure. Apply your gel coat to the filled gouges and s...
Q: When do I need to repair cracks in the gel coat?
A: You'll need to repair the gel coat as soon as you notice any cracks or scratches. Immediate repair ensures you don't have to deal with water dam...
Q: What does professional gel coat repair cost?
A: Repairing the gel coat yourself is a great way to save some money you can use for bait or gas for your next fishing trip. However, we understand...
Q: Can I blend my gel coat?
A: Yes, you can wet sand the repair work to seamlessly blend the new gel coat into the original. Start with 240-grit sandpaper followed by 400-grit...
Q: What is a brushable gel coat?
A: The brushable gel coat offers boaters a purpose-formulated product designed to apply like paint and do away with the need for spray equipment du...
How to make gelcoat shine?
2. Rub the polish into the gelcoat. Hold the cloth with the polish on it in your dominant hand. Then use small circular motions to rub the polish into the gelcoat. Continue rubbing until the surface gets a glassy shine. ...
How to polish a boat?
1. Pour a small amount of polish onto a soft cloth. Most boat supply stores carry gelcoat polish. The label on the polish you choose should tell you exactly how much to use. However, you don't want to use too much, since you'll be working in small sections, no bigger than 1 ft (0.30 m) square.
How to apply wax to a boat?
Use a cloth to apply the wax by hand. Hold the cloth in the palm of your hand. Starting at one end of the hull, press the cloth against the hull of the boat and rub in the wax using a circular motion. You can move clockwise or counterclockwise, but stick to one direction.
How to get rid of haze on gelcoat?
Once you see this haze, use a soft old bath towel to buff away the excess wax. What's left over will fill the pits in the gelcoat and restore the shine.
How to restore shine on boat?
Restoring your gelcoat can help restore the shine of your boat and protect its surface. Begin by making sure any surface dirt and stains are removed. If your gelcoat is looking really dull, with no bright or shiny spots, you'll need to apply polish first. Once you've applied the polish, or if your boat isn't overly dull, you can move on to using wax.
How to wax a boat by hand?
If your boat is large, or if you just don't have the time or patience to apply wax by hand, you can use a buffer. The foam pad will latch onto the buffer. Then place the pad flat against the hull of the boat and turn it on.
What to wear when waxing your eyes?
Wear protective gear. The chemicals in wax can have a strong odor and getting any in your eyes can cause serious damage. You should wear safety glasses and gloves before you begin applying the wax.
What is gelcoat on boats?
Gelcoat is the protective coating that covers the fiberglass of boats and other watercraft. When you get a gouge or a scratch in the gelcoat of your fiberglass, you will have to clean it up by grinding or sanding before you can repair it. Then, you’ll need to buy a wax gelcoat repair kit that matches the color of your gelcoat ...
How to protect gelcoat from drips?
If you are working in an area where the new gelcoat could drip down, then mask off the area below it with tape as well to protect it. You can tape plastic sheets over large areas to protect them.
How long does it take for gelcoat to dry?
Let the gelcoat dry for at least 8 hours to cure. Leave the repaired area to dry overnight or for at least 8 hours. This will ensure that the gelcoat is hard enough for sanding and finishing. Touch the gelcoat to make sure it is hard before you proceed to sand it.
How to get scratches out of a car?
Sand with the direction of fine scratches starting with 80-grit sandpaper until the scratch is even with the area around it. Switch to 150-grit sandpaper and sand until the scratched area is evenly smooth, then switch to 240-grit sandpaper and sand it until the texture becomes even smoother and the damage is blended in to the area around it.
How to make gelcoat with peanut butter?
Pour the amounts of each part recommended by the manufacturer into a plastic or paper disposable cup. Stir it with a mixing stick for at least 1 full minute or until it is about the consistency of peanut butter. Wear gloves, safety glasses, and a face mask when you mix the gelcoat.
How to fix a spot on a car?
1. Purchase a wax gelcoat repair kit that matches the color of the damaged spot. Gelcoat repair kits come with 2 parts that you mix together right before applying it to the damaged area. Try to match the color as closely as possible or get a kit that has different pigments you can add while mixing to change the color.
What to use to mix gelcoat?
Wear gloves, safety glasses, and a face mask when you mix the gelcoat. If your gelcoat repair kit doesn’t come with a mixing stick, then use a clean craft stick (like a wooden popsicle stick) to mix the gelcoat.
How to remove gelcoat from fiberglass?
Sand the fiberglass down until there's no shine left, so you know the gelcoat's surface has been removed. In the case of very fresh, shallow crazing, sanding alone may remove some or all of the cracks.
How to match gelcoat to old gelcoat?
Using gelcoat paste, add a coloring agent to match the color of your gelcoat, if necessary. Most gelcoat pastes are available in white or neutral colors, but straight out of the can they rarely match aged gelcoat. Remember, gelcoat can change color slightly as it hardens, so to match it exactly you'll need to mix a test batch or two, allow it to harden on a piece of cardboard, and then compare the final color against your existing gelcoat. Also remember that the new gelcoat will fade at a different rate than the rest of the boat, and a few years down the line, the difference may become visible. When you're satisfied with the color match, mix a final batch and use it to fill the cracks and cover all sanded areas. Make sure no air bubbles or gaps are left in the cracks, and use a plastic resin spreader, putty knife, tongue depressor, or similar object to smooth out the surface.
How to clean cracks in fiberglass?
Once all the cracks have been ground away with the Dremel, re-sand the area with the sandpaper to smooth out any rough edges or burrs. Wipe away all of the sanding dust and ground fiberglass bits, then wipe down the entire area with the rag dipped in solvent again. It's very important at this stage to ensure that the surface is completely clean and uncontaminated.
What is gelcoat cracking?
Gelcoat Repair on Boats. Crazing in gelcoat, also known as spider cracks or stress cracks, plagues countless boaters. Here's how to fix the problem. Crazing is an incredibly common issue on modern fiberglass boats, and although it usually starts off as a matter of cosmetics, in severe cases these surface cracks can grow, deepen, ...
How to fix a crack in a dremel?
Fit your Dremel with a silicon carbide or tungsten carbide bit, in a bullet or cone shape. Using the highest speed possible (bits turning at lower speeds tend to grab and rip the gelcoat, causing chips and splinters instead of a smoothly ground surface), start at one end of each remaining crack and grind all the way to its other end. You'll need to grind down through the crack until you've exposed uncracked gelcoat or fiberglass beneath the surface, but don't try to rush this part of the job; let the bit and its speed do the work, as opposed to applying a lot of pressure. It's usually best to run the Dremel along each crack lightly then go back and do it again, as opposed to trying to grind deeply on the first pass.
How to fix crazing on a wall?
Before you can start to fix crazing, clear the area of any obstructions and remove all hardware that covers or obscures any part of the cracks. Then, get busy cleaning. Thoroughly wash and dry the area, and remove all obvious surface contaminants with a rag dipped in a strong solvent like acetone.
What to use to sand curved surfaces?
It'll prevent you from accidentally pressing too hard in one area, and inadvertently creating a low spot. On curved surfaces, use flexible foam or rubber blocks.
How long does it take to repair gelcoat?
Use a small wood or plastic putty knife to spread the gelcoat smoothly over the gelcoat repair. You should have about 10 to 15 minutes of working time after adding the catalyst before it starts to harden and is no longer fluid. Fill the repair slightly higher than the surrounding surface to allow for sanding.
Can you repair a fiberglass boat?
You can successfully complete basic fiberglass boat repair by following these steps.
Can you gelcoat a boat?
For these, call in a pro. Also, deep gouges may need structural fiberglass work or filler before you repair the gelcoat. On horizontal surfaces, liquid gelcoat works, but for vertical surfaces, a paste is easier to apply. The first step is identifying the finish on your boat.
Do you need to fill gouges with epoxy?
You'll need to fill deep gouges with resin and filler before applying finish. Epoxy resin and fillers adhere better than polyester products but cost more and require several extra steps prior to applying the finish color of either gelcoat or boat paint. If you choose paint, topside alkyd enamels, polyurethanes and others are available from Interlux and Pettit.
Where can I get gelcoat for my boat?
Two of the biggest suppliers in the United States are Spectrum Color in Auburn, Wash., and Mini-Craft in Wildwood, Fla. Each company can help you with color selection and matching. Both companies even have gelcoat colors listed by manufacturer and model year. When you order, the representative will ask you whether you want wax in your gelcoat.
When sanding a boat, do you sand in an X pattern?
When you sand, wet or dry, be sure you sand in an X pattern, not in a circular motion like would if you were waxing. This keeps the sanded area flat so you don’t end up with “divot” in your hullside or deck. When the scratch is gone, or at least removed to your satisfaction, it’s time to buff.
How to get rid of scratches on Miro?
Miro recommends starting out by dry-sanding with 180-grit sandpaper. When you begin to see the scratch disappear, bump up to 320 grit. When 90 percent of the scratch is gone, move up to 400 or 600 grit and begin wet-sanding, working your way up to 1000-grit. When you use 400 grit or higher, be sure to wet sand.
How to buff a scratch?
Miro recommends a three-step process. First he uses 3M Super Duty Rubbing Compound 05954 with a rotary polisher and a wool pad. He then switches to 3M Perfect It II 05973 Rubbing Compound, and tops that with Perfect It III 05941 Finishing Glaze. Use light pressure on the polisher and let the material do the work. Afterward, use a good synthetic wax to protect the finish.
What tool can help determine engine hours on a used boat?
The Rinda TechMate tool can help determine engine hours on a used boat.
Can you sand a 400 grit sandpaper?
When you use 400 grit or higher, be sure to wet sand. Always keep the sandpaper clean with nice fresh water and be cautious not to remove too much gelcoat. It is possible to sand through the color. Believe it or not, 1000-grit has more cutting power than 180.
Can you use gelcoat on a used boat?
Used boats often have scratched gelcoat. If you’ve been shopping used boats for any length of time, you probably knew that already. The good news is that you can use that as a negotiating tool. On the other hand, if you’re the seller, you stand a better chance of keeping your asking price up if your boat shines.
How to gelcoat a boat?
Step 1 - Clean Your Boat Thoroughly. The first thing you will need to do before applying gelcoat on your boat is to make sure your boat is completely cleaned. If there is dirt or other grime on your boat when you put your coating of gelcoat on, it will not create a strong seal, which is important to the protection on your boat.
Why do boats need gelcoat?
Hair dryer (optional) If you own a boat, you may know that it is important to give your boat a gelcoat cover to help protect it from leaks and cracks. Fortunately, with the right tools most anyone can conduct this process, allowing you to save money from hiring a professional to do it.
What is gelcoat for fiberglass?
Gelcoat is a resin that will protect any fiberglass structure with a strong shield. This resin will help protect water from seeping in even if your boat scrapes against something causing gouges or nicks. Though the gelcoat will help prevent your boat from further damage, it is important to remember that you may still need to make repairs to ...
How to dry gelcoat after sanding?
After you have sanded down the gelcoat, you will need to allow the substance to dry. If you want to help it along, you can use a hair dryer, though this may not make things much faster. You will need to add several layers of the gelcoat to make sure you have a thick and durable surface. Make sure each coat dries between each layer.
What to use to smooth out rough surfaces on boat?
After you have made a layer of gelcoat on your boat, it is important to use a fine grain sandpaper to smooth out any rough surfaces and brush marks that may be left behind. Removing these areas will allow you to place several coats or gelcoat on your boat without having a broken seal.
Can you spray gelcoat on a boat?
If available, you can use a spray gelcoat. This method is much easier and faster to apply to the base of your boat and you will have fewer areas that will need to be sanded down. Make sure to tape of areas that you do not want to spray. The spray solution is a little less brittle and more durable.
How to clean gelcoat?
Clean the gelcoat to prepare the surface. Make sure that there are no residues of oil, wax, dirt, etc. Now scrub the surface with the soap water, and don’t forget to rinse the soap residue. If the water does not separate while flowing down the surface, that means you’ve cleaned the surface correctly.
How long does gelcoat last on a boat?
A regularly waxed gelcoat can last for up to 15 years on the boat. This figure can vary based on how well you take care of your boat’s hull. If you’re having trouble deciding whether to re-gelcoat or paint the hull, here’s a fantastic guide for you (and your boat). It is safe to paint the hull if the gelcoat is in good condition.
When To Re-Gelcoat The Hull?
Here are a few conditions and situations in which you should opt for the reapplication of gelcoat instead of painting your boat’s bottom.
How does a man paint a boat hull?
A man paints a boat hull using air compression.
Is gelcoat cheaper than paint?
Gelcoat application can be expensive as compared to paint. But the longevity of the gelcoat still makes it cheaper than paint and worth every pen ny. Please remember that gelcoat will be expensive only if you’re re-coating the surface from scratch. Minor repair/patchworks, on the other hand, will be cheap.
Can you paint a boat bottom over gelcoat?
You can paint the boat’s bottom over the old gelcoat if the gelcoat is in good condition. It will give an added layer of protection to your hull and revive shine for a while.
Can you paint a boat hull with gelcoat?
It is safe to paint the hull if the gelcoat is in good condition. A good condition gelcoat is one, which still retains gloss and does not show white chalky powder on the surface. If the gelcoat lacks these signs, then re-gelcoat the boat’s bottom, or else I recommend painting at least.
