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How to repair Intex challenger k2 inflatable kayak holes in the seam

How to repair Intex challenger k2 inflatable kayak holes in the seam

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Earlier on in the year Thom and I purchased two Intex Challenger k2 inflatable kayaks. We’ve used these kayaks a number of times and they’ve saved us a lot of money on kayak rentals around Canada! However, on a weekend away in Harrison Hot Springs we noticed that one of the kayaks seemed to have a leak. The hole was in the seam and therefore not the easiest place to patch over. Luckily we’ve figured out how to repair the Intex Challenger K2 and if you’re having the same issue then here’s how we repair ours and how to buy a similar Intex explorer k2 kayak repair kit.

inflatable kayak repair kit

How to repair your Intex kayak | inflatable kayak repair kit

About the Intex Challenger K2 Inflatale kayaks

q? encoding=UTF8&MarketPlace=US&ASIN=B00177FIJ8&ServiceVersion=20070822&ID=AsinImage&WS=1&Format= SL250 &tag=thatadven 20ir?t=thatadven 20&l=am2&o=1&a=B00177FIJ8The Intex Challenger K2 Kayak is perfect for casual paddlers. It’s bright great and we always get asked questions whenever we’re blowing it up on the beach in Vancouver. We’ve used it on lakes, on the ocean (but not far out) and plan to use it lots on our trip to Banff & Jasper too.

Perhaps surprisingly, it really doesn’t take that long to pump up. The kayak comes with a hand pump and it’ll probably take you around 10 minutes to unpack and set up everything. The only thing you need to purchase in addition to the kayak is a lifejacket.

The K2 is for two people but we prefer to use one each as you just have a bit more room to play with.

We bought ours on Amazon and they cost about $90 (US&Canadian). The one person Intex Challenger is about $70.

Buy one now

How to repair Intex Challenger K2 kayak with a hole in the seam

Given how cheap the Intex Challenger K2 kayaks are it’s not that surprising that they get some small holes in them. I think the holes in ours are more to do with how we store them than running over something in the water. Since we live in an apartment we always fold our kayaks up and put them back in their storage bags (usually covered in sand still). If you were able to leave yours more loosely folded and clean I don’t think they’d be as prone to holes.

There are a couple of ways to fix Intex inflatable kayaks. The first is if the hole isn’t in the seam and the second works great if your Intex Challenger Kayak has a hole in the seam or anywhere!

Here’s how to patch an inflatable kayak depending on where the holes are and everything you need to make your own kayak puncture repair kit.  

First fix: Hole not in the seam

These kayaks do come with a repair kit. The repair kit includes a quick-fix, temporary patch and some plastic patches which require special glue.

Inflatable kayak repair kit. You will need:

Here’s what you’ll need for this inflatable kayak repair kit.

If you’ve lost the patches you can buy the following substitutes:

Step 1: Identify the location of the hole

First, you’ve got to find where the hole in your Intex Challenger kayak is. This is usually fairly obvious as you’ll hear air hissing out and it’ll stop when you put your finger over it. If you kayak is fully deflated you may want to inflate it slightly to make it easier to identify where the hole is.

You can get a wet sponge and wipe it over the area you think the hole is in. Some small bubbles will appear when you’ve found the hole.

Step 2: Clean & dry the area

Next up you need to clean and dry the area around the hole. Ideally, you should always wash down your kayaks after use but sometimes this isn’t possible (and it’s not something we personally do much either!).

Step 3: Apply the patch

If you’re using the temporary patch mid-kayak then just dry the area with the hole and peel off the backing for the patch. Then place the patch over the hole and smooth the edges. Leave this for at least 30 minutes before you take the kayak out again.

If you’re using the repair kit that comes with the Intex Challenger kayaks then you can either apply the whole vinyl sheet or you can cut it to a smaller size.

You’ll need some vinyl cement glue to attach the plastic and it’s best to leave it to dry for a few hours at least.

how to repair intex challenger inflatable kayak

Second fix: Inflatable kayak seam repair

If there is a hole in the seam, which has been the case with our kayaks, apply a patch as above isn’t so easy. That’s because it’s harder to bend and stick the vinyl in such a way that the air isn’t going to escape. We tried a few different ways to fix our inflatable kayak the first time this happened, but we seem to have found the perfect way now!

For this inflatable kayak repair you will need:

Step 1 & 2

Complete steps 1 & 2 – identifying the hole and cleaning and drying the area as above.

Step 3: Get ready to Goop!

Once you found and cleaned and dried the hole it’s time to get the Goop. Be very careful not to get this on your skin or all over the place. There are warning signs all over the packaging so let’s keep it to the kayak!

Slowly squeeze out the Goop onto the area with the hole being sure to cover a fairly wide area around the hole. I found this is best just to make sure you’ve covered it rather than trying to keep things super neat and only over the hole.

Use the spatula to spread the Goop. It does get very ‘gloopy’ quickly so a spatula is the easiest way to spread it and keep your hands clean.

Goop is clear so it won’t’ be immediately obvious but yes, you will be able to see it. However, at least with this Intex kayak repair it’s still paddle-worthy!

Step 4: Leave to dry

It’s best to leave the Goop overnight to make sure it’s fully bonded to your inflatable kayak.

Whilst Goop does dry pretty quickly you’ll find it’s still tacky for quite a while.

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Tuesday 29th of June 2021

Hi there, I developed a method to repair a seam leak in my Intex K1. It works perfectly and it is very reliable. I call it the "piercing" method because after the repair it looks as if the kayak has a "piercing".

This is the basic idea: two metal washers tightly compressing the area around the leak. Both metal washers are held in place and tightened by means of a bolt and a nut. These metallic elements have to be Stainless Steel quality. The metal washers need to be thick enough, about 2 mm, to ensure that compression is distributed evenly. Between the metal washer and the kayak vinyl fabric you have to put a circular washer made of rubber, a few millimeters bigger in diameter than the metal washer (I cut it out myself from a used bike inner tube). You have to calculate the length of the bolt in such a way that it does not protrude more than necessary. The nut has to be a self-locking type, the one with a blue nylon coating in the thread. It is crucial that the diameter of the bolt is the same as the hole of the metal washer so that the compression is effective. In my case I used a 5 mm diameter bolt, which I found is the perfect size for this job. I insist it is also crucial the thickness of the metal washer, in my case 2 mm thickness. Now cut out a circular washer of Vinyl repair plastic, which has to be glued with Vinyl cement glue to the area of the seam leak . The 5 mm hole in the rubber and vinyl can be done with a normal paper puncher. You need to make a 5 mm hole exactly in the middle of the seam leak. I did it carefully using a electrical welder, but you can use a hot screw instead. Perhaps you can use simply a punch tool but carefully. I hope this is of interest to whoever is determined to solve the seam leak by all means. The whole procedure takes about 30 minutes. Should anyone require further details pls let me know.

Pamela Maxwell

Thursday 15th of October 2020

Hi again, looks like my questions didn't post: 1) Do you apply Goop to inflated, partially inflated or deflated kayak? 2) Have you applied more than 1 layer after curing? Thanks in advance!


Wednesday 14th of October 2020

Hannah, Thanks for this super helpful advice! My question is: When using Goop only repair in seam/intention, do you have the kayak inflated, partially inflated or deflated?

Pamela Maxwell

Tuesday 20th of October 2020

Yes, makes sense. I'll try that. On the Goop package, it mentions roughing up the surface but that makes me nervous on an inflatable. Also, mentions applying a second layer of Goop after curing. You haven't found either of those necessary it sounds like?

Hannah Kacary

Thursday 15th of October 2020

I found it easier to do it partially inflated. I'd inflate it so I could hear where the hole was, then deflate slightly so that the air wasn't blowing on the goop but the kayak wasn't just folding in on itself. If that makes sense!


Tuesday 29th of September 2020

Hi there Can I just clarify that you are not trying to use a patch when you recommend goop a seam???

My split is on the base where the seams are pinched together and patches don't stitch because of the varied surface area. This had occurred from folding the kayak.

Hannah Kacary

Wednesday 30th of September 2020

Hi, no I just smear the goop over the hole, no patches. Patches would be best if on a flatter bit of the kayak but I've yet to have a hole there!