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Any HINTS on GelCoating?

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scooper77515

freebie fixer
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I have done plenty of fiberglass work.

I have a couple of cracks and chips in my hull that need to be gelcoated. Luckily it is white so I don't have to worry about matching colors.

Any hints before I get into this?

I need to learn from others' mistakes.
 
Make sure the area is clean and DRY before you repair it.
I have used rubbing alcohol to dry out fiberglass before repairing it. (inject the alcohol with a syringe into the area and let it dry)
 
Clear Lake TEXAS?

Anyway, it looks like I have 2 spots to fix. One is where someone hit something hard on the plastic front guard and crushed the top portion of the gel coat. I am guessing I need to peel off all the broken shards and gelcoat onto the fiberglass mat?

The other spot is where I came up under the winch and nailed it on top of my hull. Just nicked a chunk out of the gel already down to the mat.
 
keep this updated..

Hey Scoop...i got some spots underneath that needs some work, and, since never done it, figure i try, before throw'n the dough out. Post ur updates/procedure...appreciate it.
 
Timmy, this thread is FOR help, not to give it:reddevil:
.
I was hoping to get some pointers before I mess with it. I may take a couple of pics tomorrow, if I get the camera out. I wonder if I need to pull the chips out before I gel it up?

I cleaned the boat up really good today, and pulled out all the junk (waterskis, fishing poles, koozies, etc.) and waxed it up really good. Now time to fix a couple of dings and put in new Hydro-Turf. Then pretend it is a new boat!
 
I had a few dings in the hull, (from slowly sliding onto the beach), the biggest was the size of a half dollar. I picked up a "Match N Patch", Gel Coat Repair Kit at West Marine, manufactured by Evercoat......(around $49, they also sell a smaller version for $39. but it was half the size)

The "white" still needed a little tinting to match my Seadoo white hull, but no problemo as the stuff doesn't start setting until you add the hardener...mix thoroughly and eye match...then add hardener and apply. The kit includes screed tool, mix sticks, plastic sheets to cover, and a prep / cleaning solvent...

This was my first attempt at patching a boat, the kit made it pretty easy, make sure you screed it off real tight so you won't have to sand through too much excess material. I picked up some 400 / 600 grit wet sandpaper, (not in the kit), after a fair amount of sanding and buffing and waxing it looks pretty good, I know where the repairs are but nobody else seems to notice...

Main ingredient required...confidence (plus read / follow the instructions, and work fast after you add the hardener) Good luck!
 
I have the $39 kit here, and have looked over the instrucs, and it sounds pretty straightforward.

Do I need to remove the old shattered pieces of gel from the ding, and apply directly to the exposed fiberglass mat?

Or do I just fill in the cracks between the shattered pieces with the new gel?

I will try to put a picture up this afternoon to show you what i am talking about.

Thanks for letting me know it won't match out of the box. I was assuming white was the default color and I would just be able to skip the color-matching portion .
 
Clear Lake, Iowa here.
I would get the pieces out before you add new gel. The pieces may trap an air bubble the will eventually crack and look like crap.
Just follow the kit directions and you will be fine.
 
Scooper...

Post up some pice when you are done. I have a few spots that need work, but I'm going to leave them untill winter.
 
Here are the BEFORE pictures...

I will post AFTER pictures this week after I do the repair.

The spider crack was done before I bought it, but the half-dollar sized nick I did before I learned to trailer it correctly and hit the winch.
 

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"After" Pics...

Not perfect, but what I did was work on applying it in the garage, then take it to the lake with several sheets of wet-or-dry sandpaper and my block, and use lakewater to wet it.

I went a little deep on the starboard side, so you can see the fiberglass again, and there are a couple bubbles.

I also need to just scrape off the excess gelcoat that ended up on my purple strip on port side, and again, a little too much sanding and you can see the cracks, but it is watertight and looks much better.

Working with this stuff reminds me of working with Bondo. I HATE Bondo. That is why my car still looks like it does in my avatar.

Anyways, pics...
 

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OK, now I am complaining about how crappy the job was, but then I pulled up all 4 pics and quickly looked at before-and-after, and I think it looks DAMNED fine!!!:cheers:
 
Not perfect... but yes... 100% better.

I guess I'll get one of the kits, and touch up a few spots that I have.
 
The stuff on the purple strip is just left-over material that dripped. Since I sanded it down at the lake, I didn't have a sharp tool to scrape that stuff off. It will just peel off and give me that sharp smooth edge between the bumper and hull.

Then THAT after picture will look much better.
 
Scoop,

Dude, for a first attempt and gelcoat repair that looks REALLY good!

Thanks for sharing your experience with us all. We all will need this skill some day.

Like my Dad used to say.....You better either make ALOT of money in life or be very handy with tools.

Craig
 
Like my Dad used to say.....You better either make ALOT of money in life or be very handy with tools.

THAT is why I am handy with tools...:ack:

I have done a pretty good bit of fiberglass work over the years, and bondo, so this wasn't much different.

Thanks for all the encouragement and compliments, guys :cheers:
 
I find myself needing to pull this up with the search feature. I remembered you had good results.

A buddy of mine hit me pretty hard yesterday on his band new ski with 1 hour on it. He managed to put a huge gouge in the gel coat on my boat. It is about 10" by 1/4". So i think I am going to go this route and I have some questions. Did you end up busting loose the little chips in the crack, if so how? Did you buy the kit that claims to match seadoo perfect and you actually order it by your year and model? Does it dry shiny white like that?

That should get me started. I am sure I will have some more questions as I actually fix it.
 
hey buddy.....oh yea im new here on the forum, but a gear head!!! some thing i don't see many people mentioning much about with the gelcoat repair is, if the cracks are small or spider cracks you will want to widen them out a beer can opener works great. you put the pointed end of the opener in the crack and pull (in one direction) it will open up the crack so it will hold a sufficient amount of gelcoat! good luck it looks hard but the repairs are NOT at all. just take your time!!!
 
His suggestion is pretty good. Or use a dremel to widen the cracks a litgle. I tried to pry out as many chips as i could.

The job turned out better on the bigger holes than it did on the cracks.

I used the generic kit with the colors, including white, needing to be added. I probably could have gone even whiter for better hiding of the repair.
 
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