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Author Topic: 1976 22-2 FF - Sustained large gash in the hull  (Read 828 times)

July 31, 2017, 04:16:11 PM
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dristau77

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1976 22-2 FF - Sustained large gash in the hull
« on: July 31, 2017, 04:16:11 PM »
Hi... I'll try and get some pictures, but I sustained a large gash in the side of my boat this weekend. It doesn't appear to have gone all of the way through the fiberglass, but I can't be sure. That said, should I be using epoxy resin and materials to fill it, or should I be learning polyester methods? I've come across research that gelcoat will stick to the West System epoxy.

I was hoping that someone here might know what material the hull is originally made of and what I can use to fill it up once I've sanded and prepped the area.

Thanks folks!

Dave
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

July 31, 2017, 06:29:05 PM
Reply #1

RickK

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #1 on: July 31, 2017, 06:29:05 PM »
It's polyester and chopped mat. You'll have a heck of a time matching the gelcoat, so you might think about painting the hull.  You can roll and tip it and get good results.  Then you can use whatever you want to repair the damage.
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

August 01, 2017, 01:45:56 PM
Reply #2

wingtime

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #2 on: August 01, 2017, 01:45:56 PM »
Your boat was made using polyester or vinylester resin.  I'd do my repairs using a good quality FRESH poly resin.  Epoxy requires a special mat for it to absorb into.  Also I would not risk putting gelcoat on top of epoxy  odd are it will come off over time.  Gelcoat applied over fresh poly will bond on the molecular level.  Unless the damage is structural I wouldn't bother with the epoxy. 

Where are you located? 
1998 Explorer w/ Etec 250


1987 170 w/ Evinrude 90

August 01, 2017, 07:46:18 PM
Reply #3

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #3 on: August 01, 2017, 07:46:18 PM »
I'm in the suburbs of Chicago.  I'll post some photos when I get home and figure out how to do that.

I'm hoping I might be able to fill with the resin/glass paste that I've seen called peanut butter.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

August 01, 2017, 09:08:47 PM
Reply #4

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #4 on: August 01, 2017, 09:08:47 PM »
https://imgur.com/gallery/05RPd

This link should work for photos. Let me know what you think. There is give in the deepest part. It's not much, so I don't know if I should lay new glass over it or not.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

August 02, 2017, 05:25:25 AM
Reply #5

RickK

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #5 on: August 02, 2017, 05:25:25 AM »
We need to see a pic that shows where on the hull this is and the surrounding area.  I doubt any of this is structural but it took a pretty good hit to gouge that much, so the surrounding area is damaged too.
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

August 02, 2017, 07:58:28 AM
Reply #6

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #6 on: August 02, 2017, 07:58:28 AM »
I'll dig one up. There wasn't any further cracking around this area. The pics are after I had sanded it down to clean it up for better inspection. It's located starbord side about three feet from the stern in the middle (vertically) of the gunwale, just above the waterline. Pushing on surrounding areas and opposite side yields about the same amount of flex in the hull, next to zero with moderate pressure.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

August 02, 2017, 09:27:01 AM
Reply #7

mshugg

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #7 on: August 02, 2017, 09:27:01 AM »
Yeah, I second Ricks request for pictures that show the location.  Also, it looks like a crack at the back of the gouge that either breaks through the laminate or into an area of delamination.  The method of repair may vary depending on access to the back of the area.

August 02, 2017, 09:30:04 AM
Reply #8

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #8 on: August 02, 2017, 09:30:04 AM »
I will not have access to the back of the area.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

August 02, 2017, 04:05:21 PM
Reply #9

mshugg

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #9 on: August 02, 2017, 04:05:21 PM »
So, its on the side of the gunwale above the rub rail, right?  If so, the best repairs would be feathering the area out further.  The usual recomendation is 12-1, so if the area is 1/4" thick, you would feather out 12/4" or 3".  Then you would layer in glass, I'd go at least 3 layers of 1708 starting large to small then top with  a layer or two of mat on the surface.  Use good quality polyester laminating resin, not finishing resin or cheap boatyard resin.  They have wax in them that would interfere with that molecular bond to your gel coat.  Matching the gelcoat color is probably the hardest thing about the job.

August 02, 2017, 08:18:11 PM
Reply #10

RickK

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #10 on: August 02, 2017, 08:18:11 PM »
Quote
about three feet from the stern in the middle (vertically) of the gunwale, just above the waterline
Rick
1971 "170" with 115 Johnson (It's usable but not 100% finished)

1992 230 Explorer with 250 Yamaha

August 04, 2017, 01:36:41 PM
Reply #11

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #11 on: August 04, 2017, 01:36:41 PM »
I wasn't able to get over there to get a zoomed out picture. It's a vertical surface just above the waterline about 4 feet or so from the stern. I don't like the way the crack moves, so I'm going to be grinding it out and laying new glass. I have about 2 yards of 1708 and 2 yards of 2.0 CSM. I'm going to check West Marine for 1.5, but I don't think it will make a huge difference to use the 2.0 if I have to. I'm using polyester laminating resin. I will have vinylester filler. I have the PVA as well to coat it when I'm ready for it all to cure up completely.

I'm going to put together a backer panel and then glue it in using a string and a screw to keep it in place until it sets. I'm not making a hole  to access the back of this. It's not a structural piece. Once set, I'll lay up new glass on the outside using going biggest first and then out to smallest. Smooth. Fair. Smooth. Fair. Smooth. Match gel color and pray it dries the correct shade. Gel...sand...sand...sand some more...you get the point.

Thank you for all of the pointers. I'm hoping that this will go well for my first time glassing.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

August 05, 2017, 06:51:47 PM
Reply #12

dristau77

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Re: 1976 22-2 FF - Sustained large gash in the hull
« Reply #12 on: August 05, 2017, 06:51:47 PM »
Well...you were all correct.  What looked like a 6 inch gash, was actually about 9 inches long and two across. Delaminated all of the way through. I was surprised that it was not made up of only chop strand. There was a layer of weave at the bottom. The gash was bad enough it had snapped a couple of those strands too. I got five layers on the inside and 7 (progressively smaller) layers on the outside. Two 1708 (separated by cam) then cam the rest of the way out. We'll see how it sands after curing overnight.
1976 Family Fisherman 22-2
"Y-Knot"
OMC I/O 175
3rd generation owner

 

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