Glueing keel strips to Folbot kayaks

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kayakvancouver

Glueing keel strips to Folbot kayaks

Post by kayakvancouver »

What strong adhesive do you recommend to attach keel strips to my Greenland
double.
The self-adhesive backing comes off.

Also, what solvent should I use to clean the hull before attaching the keel
strips.

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flatwater
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Re: Glueing keel strips to Folbot kayaks

Post by flatwater »

Is your hull Hypalon or Elvaloy? They require totally different adhesives.
Do you have the keel strips from Folbot?
Are you saying that the adhesive is separating from the keel strips?
Is it doing it as you remove the backing paper?
If so, you'd need to make sure you got all the old adhesive off before trying a separate adhesive to attach the strips.

AquaSeal is very popular but I'm not sure it would be the best. You'd want something extremely strong.

Any of you other guys have a recommendation?

Do this on a nice, warm day, in the shade.
Assemble the boat completely so the hull is fully stretched out.
Clean the hull with soap and water.
Rough up the area for the strips with fine sand paper, carbide paper, garnet paper, whatever you have.
Clean again with soap and water and some gentle scrubbing to get the sanding residue off the surface.
Then clean the area for the strips with acetone - gently.
Now you're ready to glue the strips.
Don't stretch them. Lay them down with no tension.
And be sure to also follow any special instruction for the adhesive you end up using.
Five Folbots - Super TSF, two GIIs, Kodiak, Gremlin

kayakvancouver

Re: Glueing keel strips to Folbot kayaks

Post by kayakvancouver »

Thanks for responding.

I bought the boats 2nd hand so I'm not sure if it's Hypalon or Elvaloy. How do I find out what they are?

I have keel strips from Folbot. They have an adhesive backing. I mounted them on the hull of a Yukon and they came partly off. Hence, my question what solvent to use to clean the hull.

I also need to keel my double and I want to make sure the strips stay on.

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flatwater
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Re: Glueing keel strips to Folbot kayaks

Post by flatwater »

kayakvancouver wrote:How do I find out what they are?
A picture would help, but also do you know about what year (decade) your GII was built?

Hypalon is black and on some older boats from the '90s might be grey.
Elvaloy is white. It was introduced in 2012 or so.
Five Folbots - Super TSF, two GIIs, Kodiak, Gremlin

RangerTim
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Re: Glueing keel strips to Folbot kayaks

Post by RangerTim »

You might want to poke around here:

http://jpwinc.com/

Look under "Repair and inflatable materials"
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MGGRADY
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Re: Glueing keel strips to Folbot kayaks

Post by MGGRADY »

I recently added keel strips to a 10-year old Aleut. Couldn't get strips from Folbot, so I ordered four 2" x 96" strips of Pennel Orca from NRS. My hull is hypalon, so I ordered some cement for hypalon, FA4844.
I wanted the keel strips to stick well to the hypalon, but I wanted them to come off when I wished to replace them. So, before I jumped in, I did some tests. I tried 3 different "contact" cements: the FA4844 from NRS, Weldwood Contact Cement (not water based), and 3M 80 Rubber and Vinyl Spray Adhesive. I did not roughen the hypalon. I cleaned it with detergent and a final wipe of acetone.
I found that all three adhesives gave suitable results after the adhesive cured for 2 days. I went with the 3M 80 because I could spray it on evenly, it rolled out nice and flat, and clean up around the edges was possible with lacquer thinner. It will be possible to peel off the strips, but they are very well adhered to the hypalon.

RangerTim
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Re: Glueing keel strips to Folbot kayaks

Post by RangerTim »

McGrady, have your had a chance to field test the Hypalon strip adhesion, especially in salt water? Please, keep us posted. Everything I have read emphasizes the importance of roughing the Hypalon before applying adhesive. I have done it for patches but I am daunted by the thought of sanding for waterline-length strips.
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MGGRADY
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Re: Glueing keel strips to Folbot kayaks

Post by MGGRADY »

I have taken my Aleut out seven times since I applied the keel strips. Freshwater lakes only. There is absolutely no sign of any of the strips lifting and I've got a few abrasions on some of the strips. Still, time will tell. To me, the strips are sacrificial. I would abrade the hypalon hull if I were applying a patch and wanted a permanent fix. For that I would only use the hypalon adhesive.
MG

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