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Old 04-14-2021, 07:40 PM   #1
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Filling rivet holes

Hi all. Iíve taken most of the rivets out of my Ď77 trillium in order to prep for a paint job. Iíve realized though that the screws arenít going to be big enough to hold the grates and windows when replaced. I am guessing that filling the holes is my best bet. Can anyone recommend a product. Or... would using rivets be a better option than screws? Iíve never worked with them but sure I could learn.
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Old 04-14-2021, 09:29 PM   #2
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For the Trillium windows, screws were originally used, driven into the wood strips inside the window frame. I used stainless steel #8 3/4" pan head screws when re-installing.

For the fridge vents and roof vent, watertight rivets could be used.
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Old 04-15-2021, 07:42 AM   #3
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If you want to fill and refinish would suggest that you grind out a scarf on both sides (or just the outside if the inside is not unfinished).
I would fill the scarf with fiberglass cloth and epoxy resin and then grind flush. the scarf will add strength to the area and the scarf taper will taper the stress over the surrounding area.
Or use stainless screws with bigger heads.
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Old 04-15-2021, 07:48 AM   #4
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I tend to put pieces of plywood inside and use stainless screws. Did this when I went with a surface mount shore power hookup.
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Old 04-15-2021, 10:19 AM   #5
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Originally Posted by thrifty bill View Post
I tend to put pieces of plywood inside and use stainless screws. Did this when I went with a surface mount shore power hookup.
I did the same thing when I added 30 amp shore power inlet to my Trillium 4500. SS machine screws paired with nylock nuts for this fitting as well as the running lights, tail lights, plumbing fittings, etc.
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Old 04-15-2021, 12:07 PM   #6
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I opted for a more secure fastening approach than the pop rivets into acorn nuts...
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Old 04-15-2021, 12:33 PM   #7
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Hi Thrifty Bill, I like your idea of using two pieces of plywood, however I live in the Great White North and here we call that chipboard, which is mainly glue and wood chips and your picture shows half the screw strength lost in thin air? I hope that it does not get wet!
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Old 04-15-2021, 03:14 PM   #8
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I mis-spoke (missed typed), its actually OSB. Its not chip board, but its not particle board either. OSB is made out of long wafers, not chips. I used to be in the industry. I used the screws I had in hand, that were a little long. Not a problem in my view. Area is behind a boxed in cupboard section. Temporarily removed the cupboard to do other work, allowing for an inside picture.

Lots of OSB used throughout the molded FG industry. Many floors are OSB. In traditional building around here, roof sheathing is typically OSB. I did use cabinet grade plywood for cabinet doors and plywood for window surrounds in my Trillium.
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Old 04-15-2021, 04:31 PM   #9
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Thank you everyone. These were great ideas and have helped me make a plan. I’ve ordered a rivet gun to replace what I can that way but looking at your solution Steve I may cancel the gun. I’ve also ordered some Pc-11 to strengthen and fill anything that needs to be done that way. Thrifty Bill, great solution!
Thanks again all!
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Old 04-15-2021, 08:46 PM   #10
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SS screws are stronger than rivets, can be tensioned and can be removed/reused.
OSB works for backing plates but may not be suitable in moist applications. I've used ends of vinyl plank left over from building windows with success.
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Old 04-17-2021, 11:05 PM   #11
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Quote:
Originally Posted by Nanph View Post
Thank you everyone. These were great ideas and have helped me make a plan. Iíve ordered a rivet gun to replace what I can that way but looking at your solution Steve I may cancel the gun. Iíve also ordered some Pc-11 to strengthen and fill anything that needs to be done that way. Thrifty Bill, great solution!
Thanks again all!
Check out Spaenaur.com they sell Stanley closed end marine rivets. They are very tough, have replaced most of the rivets in our trailer with these as all of the original rivets leaked.
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Old 04-17-2021, 11:07 PM   #12
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Quote:
Originally Posted by Nanph View Post
Thank you everyone. These were great ideas and have helped me make a plan. Iíve ordered a rivet gun to replace what I can that way but looking at your solution Steve I may cancel the gun. Iíve also ordered some Pc-11 to strengthen and fill anything that needs to be done that way. Thrifty Bill, great solution!
Thanks again all!
Check out Spaenaur.com they sell Stanley closed end marine rivets. They are very tough, have replaced most of the rivets in our trailer with these as all of the original rivets leaked. They sell box's of 100 we have use most sizes
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