Patching a Maravia - Mountain Buzz
 



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Old 06-29-2012   #1
 
idaho falls, Idaho
Join Date: Jul 2011
Posts: 47
Patching a Maravia

Just bought a used New Wave 3. It has a dime size hole, I knew about it before I bought it, but I can't get the patch to stick

I've always used stabond when patching PVC boats but the local shop only had Clifton urethane/PVC glue. Never used it before but I figured sense maravia provides it in the repair kit then it must be ok.

I carefully followed maravia's repair instructions, this is my first time patching a maravia, but the patch won't stick. I'm thinking it must be the glue, it never gets tacky. Goes from wet to dry; no tacky in between. It is supposed to get tacky, right?

I'd just order some stabond but I want to use the boat tomorrow. Anybody have any ideas?

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Old 06-29-2012   #2
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Bellevue, Idaho
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Quote:
Originally Posted by whee View Post
Just bought a used New Wave 3. It has a dime size hole, I knew about it before I bought it, but I can't get the patch to stick

I've always used stabond when patching PVC boats but the local shop only had Clifton urethane/PVC glue. Never used it before but I figured sense maravia provides it in the repair kit then it must be ok.

I carefully followed maravia's repair instructions, this is my first time patching a maravia, but the patch won't stick. I'm thinking it must be the glue, it never gets tacky. Goes from wet to dry; no tacky in between. It is supposed to get tacky, right?

I'd just order some stabond but I want to use the boat tomorrow. Anybody have any ideas?
New Wave must be a Maravia model? I have patched mine and never had a problem with the Stabond. I know that Stabond doesn't have a very long shelf life.

So you are using Clifton? And it's not working? Just to be clear. Did it come in the kit or did you but it new? How old do you think it is?

Good luck. Where are you using it? I am in Bellevue and have a fresh 1/2 pint from Maravia this spring. FWIW.
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Old 06-29-2012   #3
 
idaho falls, Idaho
Join Date: Jul 2011
Posts: 47
The new wave is a maravia boat. It is like the Willie but in different sizes, no color options, no handles and only three chambers.

I'm trying to use the Clifton glue. I just bought the glue and I'm pretty sure it is fresh, hasn't been sitting on the shelf very long. I've never had problems with stabond but this Clifton glue is starting to frustrate me.
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Old 06-29-2012   #4
 
Walterville, Oregon
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I've used staybond to patch a New Wave with no problems. Be sure to sand the area the patch will adhere to and clean with MEK.
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Old 06-29-2012   #5
 
montrose, Colorado
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Which Clifton glue are you using? Is it the UR 1087 with excellarator? Have you tried a test patch to test the reactivation? It should reactivate with mek or heat after it has dried and be very tacky. The best advice on the web for patching pvc or urethane boats is on Jack's Plastic Weldings web site.
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Old 06-29-2012   #6
 
Westminster, Colorado
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Patching my Maravias makes me long for hypalon. Fortunately they're tough as nails and don't get many holes. In my experience you can never sand and MEK too much, and then getting the mix of glue and accelerant just right takes either close measurement or just dumping in the full amount of both and buying another can. I've done both.
Good luck.
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Old 06-29-2012   #7
 
Westminster, Colorado
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Patching my Maravias makes me long for hypalon. Fortunately they're tough as nails and don't get many holes. In my experience you can never sand and MEK too much, and then getting the mix of glue and accelerant just right takes either close measurement or just dumping in the full amount of both and buying another can. I've done both.
Good luck.
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Old 06-29-2012   #8
 
idaho falls, Idaho
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Quote:
Originally Posted by mikepart View Post
Which Clifton glue are you using? Is it the UR 1087 with excellarator? Have you tried a test patch to test the reactivation? It should reactivate with mek or heat after it has dried and be very tacky. The best advice on the web for patching pvc or urethane boats is on Jack's Plastic Weldings web site.
No. I'm using the LA4123, it was the only pvc glue the shop had and they said it is what Maravia is putting in the repair kits now. I don't know if that is true but the instructions on Maravia's website says "The Clifton one-part glue provided is ready to use" so I believed the shop when they told me maraiva is providing the 4123 glue.

During my last attempt at applying the patch I tried reactivating the glue with mek. It didn't get tacky just wet. I'm going to go back to the shop tomorrow and ask them how long the glue has been on the shelf. I paid $25 for a 4oz bottle of worthless glue so I'm pretty frustrated.

I've got some stabond on the way. Never had any troubles patching PVC boats with stabond so from now on I'll be sure to have some on hand.

Thanks for the tips about Jack's
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Old 06-30-2012   #9
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Danville, California
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Maravia patching

Trying & failing twice in a row when we were trying to fix an old Maravia kayak made me doubt my skills too. At least one of those failures involved the use of MEK to re-activate.

If the hole is under an inch, there are two options. You need to get all the failed glue off first for either method before you start again.

One is to forget the conventional glue entirely and go with Aquaseal, because trust me, it does stick. Chemically it is very similar to the coating that's sprayed on the Maravias. Even with Aquaseal, sanding can help, but it is very hard to abrade the coating.

If you try it with Aquaseal, you may want get a tiny piece of masking tape through the hole to keep the Aquaseal from bleeding through to the interior. The tape needs to be slipped through the hole sticky side up, so it is sealing the slit from the inside. Then, put a thin layer (1/16"?) of Aquaseal either on the patch or the area it will cover on the boat, lay it down, cover the patch with a larger piece of polyethylene (like from a one gallon milk jug), then put a brick or two on it overnight. Some Aqquaseal will smoosh out the edge as it dries, so the piece of polyethylene is there to keep the brick from sticking to the boat. With any pinholes the boat ever develops - and our rental Maravias did get them along seams as they aged - a tiny dab of Aquaseal works great. Aquaseal is not sophisticated and many experienced repair people turn their noses up at it, but I could give you a long list of things we fixed permanently with it over the years.

For conventional glue, as long as the tear is not in the drop-stitch floor, the way we were successful with our third attempt went like so....
Even if your glue is perfect and fresh, all urethane glues have a very brief window between being too wet and too dry, as you already found out. This is a huge problem. What we did the third try was clean the glue off from the prior failed attempts with MEK, sandpaper, and a big hard rubber eraser. Then we put on a thin coat of Stabond (but Clifton will work too) on the patch & boat, and let it dry an hour. After that we put a second thin layer of glue on and let that coat dry ten minutes. After 10 minutes it won't bond to itself but we set the patch over the cut and got a heat gun (a.k.a. a $15 Black & Decker paint stripper, which looks like a hair dryer) and a 1" rubber roller, got the patch fairly hot, and worked the roller tool from one side of the patch to the other. Years later that patch was still on there with not a hint of peeling. A super hot hair dryer can substitute for the heat gun. As for a roller tool, maybe you could use a small round pill bottle if nothing else is available?

If the cut is over the drop-stitch floor, heat is a bit dangerous. You can delaminate the material if it gets too warm. Small cuts on a Maravia floor would be a place where I would absolutely use Aquaseal as the preferred method.

I have a question too: Has anyone tried the so called MEK substitute that Homeboy Depot and the other stores are starting to sell? I have my suspicions it may not work for our needs where urethane glue or softening pvc, is concerned.
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Old 06-30-2012   #10
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Oh, one other thing

We always gave rental customers a patch kit. One time a group put a 1-1/4" cut on the main tube of a New Wave. Somehow, just using the StaBond or Clifton or whatever brand was in the kit (we also carried some import Bostik urethane adhesive back then), and working along the river bank, they got a 6" round patch to stick perfectly. It never came off, not even five years later. I have no clue how they did it.......
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