In the U.S. there are three big zipper brands that are used on boat cover applications:
In order of popularity:
YKK- UV resistant zippers (most common), but have no warranty.
Lenzip - UV resistant zippers that are the only zippers offering a lifetime warranty. They are also YKK compatible.
RiRi - UV resistant zippers with a five-year warranty. RiRi zipper is not YKK compatible. RiRi marine zippers are barely available in the U.S. and I suspect will be totally gone before long.
Marine zippers have been a source of frustration to boat owners for a long time. They begin to break down after continued exposure to the sun's UV rays becoming chalky and brittle. They eventually lose their teeth, or the teeth begin pulling apart. Another big complaint is the zipper sliders break or fall off.
Are there different sizes? Yes there are, and it's important to know which size you have and which size you need to request when you are having custom boat covers built for you.
The most common sizes of marine zippers used in the industry are #5, #8, and #10.
In my shop we use YKK #10, and Lenzip #10.
I keep #8 YKK Marine zippers for replacements on factory manufactured boat canvas. This is because many boat canvas manufacturers use them. If I had a choice, I would never use a #8 marine zipper. My thinking is why go smaller when bigger is available.
Click On The Link To Open:
Actual Size Zipper Photo
Can Be Used On Any Device Right From Your Boat
Note: You will need to give your browser permission to display the actual size widget once you click on the link.
Here is a picture of a separating marine zipper and the proper terminology starting with #2
Separating means that the zipper unzips and the two sides completely separate from one another
2. The #10 Separating Marine Zipper
3. Insert Pin
4. Retaining Box
5. Box Pin
6. Teeth Elements
7. Zipper Tape
8. Zipper Slider Unit
Tip: Determine your marine zipper size (see Actual Size Zipper area above), and keep a dozen extra metal zipper sliders and stainless steel crimp-on zipper stops on your boat for repairs. Salt water boaters should replace their pulls once a year. Stainless steel zipper pulls are available and worth the price. You can keep them for life and use them on future boat zippers as well. Another nice add-on boat zipper option is a lanyard zipper pull. This cord attachment adds additional length and makes the zipper easier to grab and pull.
Most Common Failures With Marine Zippers
And What to do About Them:
If the retaining box breaks off:
If the teeth on each half of the zipper become separated and will no longer hold together:
If the zipper slider is stuck:
Here is our EZ-Xtend Boat Zipper!
You will find EZ Zips very helpful for shrinking boat canvas since they work as an extender zipper. They also make a great temporary solution for failing zippers until permanent repairs can be made. Make EZ-Xtend Boat Zippers a part of your essential boat gear.
If you have marine zipper strain caused by material shrinkage:
If zipper stop fails and slider falls off the bottom of your zipper:
Order your Separating Vislon Marine Zippers here!
Please Read before ordering zippers:
The marine zippers we sell are the same zippers we use in our shop and are shown on this page.
They are made for an outdoor environment.
Order your Zipper Sliders here!
Please Read before ordering zipper sliders:
Order your Zipper Tabs here!
Buy your stainless steel crimp on Zipper Stops here!
We'd like to help you find a solution! You just might be able to help someone else trying to solve the same problem. Please include your email address, we may choose to contact you directly with an answer to your question.
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what size is good for isinglass radius corners, #10 pucker to much ...please advise
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can you replace a #8 plastic zipper on a sail cover with stainless zipper and pull?
We have a sail cover with a degrading plastic #8 zipper. I would like to replace it with a #10 stainless zipper as the boat spends a lot of time in salt …
Are your zippers YKK or Lenzip?
I need to replace the full canvas and Biminis on my Sea Ray EC390 and would like to know if the zippers you sale are the YKK or the Lenzip ones? Did I …
WHAT DO YOU CALL THE PIECE THAT GOES ON YOUR HARD TOP THAT HALF A THE ZIPPER IS ATTACHED TO
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I HAVE DIFFERENT SIZES YOU DONT LIST
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I have a Sun Tracker bimini boot and the damaged zipper is 48" long. Can I cut a 60" size #8 zipper down to 48" or do you sell 48" zippers ?
I have a Sun Tracker bimini boot and the damaged zipper is 48" long. Can I cut a 60" size #8 zipper down to 48" or do you sell 48" zippers ? Hi Ron, …
How can I sew a zipper?
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Bimini Zipper Problems
The zippers on my bimini top (2000 Regal Commodore 2460)are shot - corroded. The slides are jammed and now broken. I tried to free-up using white vinegar …
Zipper Stop Removal
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Zipper for a Bimini top, black, 24 inches
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What is best way to lubricate a plastic zipper?
To lubricate a plastic zipper on a boat canvas. Hi Richard, That answer we have found to be a little tricky. I think it really depends on how old …
Marine grade zipper
Hello, My name is Debora and I am making a sail cover and need to order a #10 seperating zipper but, I need the pull to be stainless steal and I need it …
If the retaining box breaks can it be replaced?
The retaining box fell off the zipper and i was wondering if just the box could be replaced? Hi Don, No, the retaining box cannot be replaced and is …
Where are you located in South Florida?
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Zipper for my Stack Pack
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problem ordering product
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looking for a one sided #10 marine zipper for a underwater utility bag
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YKK is a trademark of YKK
Lenzip is a trademark of Lenzip Corp
RiRi is a trademark of RiRi
EZ-Snap is a trademark of Isosso
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