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How to Repair Kayak Hull with a Heat Gun
If you don't have any adhesive at hand, but you have a heat gun or a significant repair or crack that is too large for bonds, you can use a heat gun to melt the hull back together.
Most kayaks are made from HDPE plastic, which has a low melting point, allowing you to melt additional plastic and fuse it onto the hull to repair any damage permanently.
You can purchase an affordable heat gun on Amazon if you don't already have one.
Here's how to repair your kayak hull with a heat gun:
- Use a heat gun to heat the affected area on the kayak's surface.
- Heat some donor plastic, either salvaged from household items or purchased online.
- The donor plastic should be HDPE (recycling code 2), commonly found in plastic household containers.
- Force the molten plastic into any cracks or holes in the hull.
- Ensure that some plastic goes through the inside of the hull to form a plug.
- The plastic will chemically fuse and become indistinguishable from the original hull plastic.
While repairing a kayak hull with a heat gun may seem intimidating, it can be a cost-effective and permanent solution for more extensive damage. With a bit of practice, you'll be able to get your kayak back in the water in no time!
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Best Glue for Kayak Modifications & Additions Above the WaterlineÂ
If you need to attach something to the top or inside of your kayak, such as a fishing pole holder, your best option is strong contact cement.
GlueReview recommends Weldwood Contact Cement for adhesive contact projects. It's affordable, water-resistant, solid, and adheres well to plastic. This product also works well for marine applications, including installing hydro turf on boats and personal watercraft.
Best Glue for Kayak Seats and Foam PadsÂ
You have several options when installing seats and foam pads in your kayak.
Weldwood Contact Cement is a solid choice, but it's overkill for most situations and takes a long time to dry. If you don't already have some, consider using a contact adhesive spray like 3M 90 Spray Adhesive instead.
It becomes tacky in only one minute and is easy to use. Spray a thin adhesive layer on both surfaces, leave them apart for a minute, then press them together for a strong bond. This product works on foam, leather, plastic, metal, wood, and neoprene.
Best Glue for Inflatable KayaksÂ
If you have a small tear in your inflatable kayak  or canoe, your best option isn't glue. Instead, use weatherproof tape like Flex Tape.
Flex Tape is a rubberized, flexible, weatherproof tape that will seal any small tears instantly, allowing you to use your boat again. Although it's highly durable, constant exposure to U.V. and water can cause it to deteriorate over time. So, keep an eye on it and replace it when necessary.
With the right adhesive for your kayak modifications and repairs, you'll be able to enjoy your time on the water without any worries.