How do I waterproof these screws? OT PDL 132 Bigwater kayak.

Posted by generally-speaking

4 Comments

  1. generally-speaking on

    I decided to mount my GLS10 Black Box under the rear area of the kayak. Took me about an hour to get those screws in and they got locking nuts/tension plates so they’re really tight.

    So in that sense the waterproofing is pretty good already just from the tension. And OT PDL kayaks are made from Polyethylene so basically nothing sticks to them.

    But I was still wondering if there are any good options ensure there’s no leakage?

  2. It’s hard to beat Sikaflex Marine sealant but a construction grade polyurethane caulk will also work. You can even find it in gray to match.

    Just clean the area with rubbing alcohol first. Unlike silicone, polyurethane sticks to everything and resists UV. Cleanup with mineral spirits.

    Sikaflex also makes a polyurethane caulk for construction – we use all the time in the rainy PNW.

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