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DiskDoctr's avatar
DiskDoctr
Explorer
Aug 18, 2014

Sealing cargo doors? Need ideas FAST!

I need some advice. We are converting a popup into a 8 place canoe trailer with cargo storage in the box section and need some ideas of how to seal the top hinged plywood doors?

We build a frame of 4x4 and 2x4 inside the box, making 4 large storage areas. They are all framed at the opening with the face of 2x4's. We have roughly 5/8-3/4 plywood (some odd x/32 the box stores sell now).

We plan to add 4 separate top hinged doors, but not sure how to seal the door when closed?

I don't know that stick-on weatherstripping will last.

Waterproof would be nice, but rain-resistant is the main goal.

Tools? Router, circular saw, jig saw, saws all, drills, mig welder (not aluminum), all kinds of cutting tools, etc.

Budget is tight. We'd rather have a "pretty good" inexpensive solution than an expensive "perfect" solution, but I'm interested in all options :)

The box is roughly 10' x 6.5' and we've added a 4" homemade lift kit and extended the tongue about 4' She tows extremely well with no sway or skipping, even around tight corners at 70+ mph (tested on back roads)

3 Replies

  • We have firring strips we plan to line the underside edges with as stiffeners, so that will work.

    I thought maybe a P-shaped door gasket with the flat part sandwiched between firring strip and door, then it would close on the p-shaped part.

    Looking for a source fast and cheap, about 65ft.

    Thanks.
  • I would use bulb type seals around the edges. That is what Winnie did on my cargo doors.
    They are used on trunks and car doors and can be obtained at an auto supply store. If you use the 3M yellow weatherstripping adhesive to glue them on they will hold up well.
  • Just off the top of my head:

    1) put a lip around the doors(hole), maybe with some 1X2 furring strips
    2) Make the doors so that they have a lip around the inside edge of the door, again maybe using 1x2, so that the door lip fits around the lip on the hole.

    It may be tricky getting the hinges in the right position to let the doors close all the way with this set up. Anyway use construction cement on the furring strips to give you a tight waterproof seal where they attach around the door opening and on the door itself so that water won't leak under the strips.

    As long as the door fastener holds the door firmly down, this should prevent water from leaking in...I think.

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