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Old 03-20-2016, 12:00 AM
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Small crack in hardtop

I have a 2 or 3 small crack on my hardtop, right above the rear windshield. Im going to repair it, what are the steps and products I should use? I can't find a thread with a clear answer.

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Old 03-20-2016, 02:50 AM   #2
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how deep the crack goes depends on how much you have to sand off. a lot of times it's just a chip in the paint or surface, but cracking to where it's just minor can be filled with a good 2-part epoxy.

if it's a vertical or slanted crack, you can use a round file to remove the damage. sand the surrounding area about 2-3 inches from the damage so you get a good surface to bond, then filled with epoxy, or resin and fiber glass sheet.

pictures would help too. good luck, and keep us posted

don't forget to mask your rear window to keep whatever you're using from running down. avoid removing the window if at all possible. some have cracked or shattered theirs when reinstalling it.

materials wise;
-coarse grit and fine grit sandpaper, and/or file (remove/clean damage)
-2-part epoxy (offered in different color settings)
-mixing container or cup (anything but wax type)
-acetone (not nail polish remover, even though its main ingredient is acetone, but seems heavily diluted) or equivalent
-masking tape
-newspaper or equivalent (to mask off with)

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Old 03-20-2016, 01:07 PM
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I'll post a picture
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Old 03-20-2016, 01:09 PM
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Old 03-20-2016, 01:09 PM
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Old 03-20-2016, 02:06 PM   #6
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Dajeep has a good response above. Looking at your pic I would use a file or sanding block to create a small V shape along the length of the crack and a inch or two in width. Fill with the epoxy let dry and sand smooth. I would keep the top on the jeep for alignment purposes. While sandind I would wear a mask and cover exposed skin including gloves. Fiberglass itches like hell.
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Old 03-21-2016, 06:04 AM   #7
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Quote:
Originally Posted by nepeddler View Post
Dajeep has a good response above. Looking at your pic I would use a file or sanding block to create a small V shape along the length of the crack and a inch or two in width. Fill with the epoxy let dry and sand smooth. I would keep the top on the jeep for alignment purposes. While sandind I would wear a mask and cover exposed skin including gloves. Fiberglass itches like hell.
great comment on the skin irritation. best cure for that is duct tape or equivalent. shower with cool or cold water, rather than warm or hot water, to prevent the fibers from getting deeper into your skin and causing more irritation. avoid abrasive scrubbing to prevent the spread of fibers. but either way, you'll just have to ride it out otherwise. definitely wear a dust mask and goggles, or safety glasses.

fiberglass is easy to crack if hit with blunt force or a sharp edge. but as mentioned, it may appear to be cracked, but is actually just the paint at the surface. i would bet the fibers are holding as they should, judging by your photo. and the good thing is the location of the crack allows you to get a relatively good angle on it with a file. just be careful not to jab or scratch the glass with the file or sanding block (which ever you use).
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Old 03-21-2016, 09:35 AM   #8
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Old 03-21-2016, 09:56 AM   #9
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Old 03-21-2016, 10:00 AM   #10
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Here's the product as described in the prep/application instructions I attached the link to. Preparation is key to a quality job with repair and finishes.



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