Vertical Seam Versus Horizontal Seam - Page 2 - Fiberglass RV

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Old 03-17-2015, 04:36 AM   #15
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Name: Raz
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On Trilliums the two halves are aligned with the belly band on the outside

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and metal plates on the inside. A layer of fiberglass is then applied inside to hold everything together. Others (Scamp pictured) use a lip to join the two halves. Be it horizontal or vertical this lip has to add rigidity. It's also a better way to do it as it's less likely to leak. My Trillium leaked from the factory because it was not sealed properly inside. Raz
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Old 03-17-2015, 06:56 AM   #16
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Thanks. It's really interesting to see the variety of ways that the two halves can be joined. I just had no idea that horizontal differed one from the other.

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Old 03-17-2015, 08:41 AM   #17
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I really like the overlapping seam of the Parkliner. That must make it a bit difficult to get out of the mold.
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Old 03-17-2015, 11:25 AM   #18
Name: RogerDat
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The left thumbnail supplied by Raz in post #15 is what my scamp seam looks like. I don't see any actual overlap. Just two pieces butted together with a layer of FG mat and resin applied to the inside, and I assume some resin between the top and bottom as they are brought together.

A lip on the inside in addition to helping align things if coming up from the bottom piece might act as a water barrier. However I'm not sure if one gets a stronger bond from having the surface on the inside all available for the FG layer that joins the two.

As pointed out the ridge line does impart some strength. But at least one with a vertical seam, the EggCamper I think has double walls which I would think add strength.

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