1977 21' Globetrotter
Vancouver
, British Columbia
Join Date: Jul 2016
Posts: 8
I was wondering because they have rivets that are long. I was planning on sealing the seams, between the plywood with staples, like they had originally or else fibrglassing the seams. The rivets seem like a simple solution to holding it down.
If it doesn't work, though, tapping and bolting the floor is easy enough.
The 70's trailers used a self-drilling, self tapping screw to hold the floor down. I bought new ones that were identical to the originals, and screwed down my floor quick and easy. I am certain that these screws have greater strength than a pop rivet would. Just remember that there si a lot of flex to your frame and movement to the complete structure. You don't want pop rivets shearing underneath your flooring and allowing your subfloor to float, rattle, and squeak.
You should use 1/4" x 1 7/16th inch wafer head screws to screw the subfloor to the frame everywhere but the perimeter. The perimeter should be bolted through the channel and subfloor with grade 5 or grade 8 1/4" bolts with nylock nuts.
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