Howdy again,I noticed I have a small hole in the aluminum siding where there was a slight impact. I don't know if I caused it or if it was there when we bought the camper a year ago. I'd like to seal it. Is there a recommended product and method?I have most common sealers including some RV specific ones for vinyl roofs.

For small holes I just use white butyl seal tape if the color works, I push it in with my fingers. I always keep a roll of white butyl onboard. Less messy than caulk on small wall stuff. If its a colored area maybe use a clear flexible caulk like Pro Flex Chrystal Clear etc.

Get a fiberglass repair kit from the local auto supply. It goes on quite transparent and will be barely noticible.

Sagebrush wrote:For small holes I just use white butyl seal tape if the color works, I push it in with my fingers. I always keep a roll of white butyl onboard. Less messy than caulk on small wall stuff. If its a colored area maybe use a clear flexible caulk like Pro Flex Chrystal Clear etc.Good idea. I have some of that. If I had a tube of 3M 5200 that was open, I'd go that route.

If its just a pin hole, drill it to avoid a crack starting and then put a screw in it.

Patch small hole in aluminum siding | Good Sam Community

MORSNOW
Navigator III
Jun 13, 2021
silverbullet555 wrote:
I was going to use some dicor non-sag lap sealant. Any issues with it actually sagging too much? Why that? Because I have an open tube of it already.

That will work perfect!
silverbullet555
Explorer
Jun 13, 2021
I was going to use some dicor non-sag lap sealant. Any issues with it actually sagging too much? Why that? Because I have an open tube of it already.
jaycocreek
Explorer II
Jun 08, 2021
ticki2 wrote:
Bigfoot is fiberglass not aluminum . Once you use silicone you cannot change , other caulks will not stick to the residue from silicone

It's for a small hole in the siding,not a yearly reseal..It would have been better to see the actual hole then to guess how big etc but regardless silicone gets a bad rep on this forum and the internetas it is...One of my favorite replies to the silicone is junk theme from another poster..

Keystone RV and quite a few other brands use neutral cure silicone caulk on all metal to metal, metal to fiberglass, or metal to plastic joints / seams. Basically everything on the sidewalls except the gutter rails to roof. The only place dicor is used is at a seam that involves roof membrane.

Keystone uses Tremco Trempro 645. Its not the silicone you buy at the big box. Dow Corning 790 is another good neutral cure silicone specified for vehicle applications.

As with a lot of things on RV boards you need to wade through the BS. Idiots tried in the past to put cheap acetic cure silicone they bought at Big Lots or Ollies over poly or something else, probably without any type of test or prep to know what they were dealing with, and it failed. Then they posted it on some RV board, and away it went LOL.
ticki2
Explorer
Jun 07, 2021
Bigfoot is fiberglass not aluminum . Once you use silicone you cannot change , other caulks will not stick to the residue from silicone
jaycocreek
Explorer II
Jun 07, 2021
Bigfoot still uses silicone to this day I think...About every RV shop uses it and I've had and seen many aluminum truck campers and trailers with pin holes from this and that with just a dab of silicone never to leak..

Silicone has its place as Bigfoot industries has proven....I agree to disagree..
ticki2
Explorer
Jun 07, 2021
Silicone should not be used on aluminum or any where on a camper . There are a number of caulks compatible with aluminum, dicor , trempro 621 , etc..
jaycocreek
Explorer II
Jun 07, 2021
Small holes or punctures are easily taken care of with a dab of cilicone..
JoeChiOhki
Explorer II
Jun 05, 2021
I used a soda can, cut a patch from it and then bedded it with 3M 5200 and screws to anchor it over the hole.
free_radical
Explorer
Jun 01, 2021
Fwiw
JB weld should stick to aluminum also
silverbullet555
Explorer
Jun 01, 2021
bgum wrote:
Bondo aluminum and it can be sanded and painted. Are you sure that the hole is not due to electrolysis?

Yes. There is impact damage (dent) and a small irregular hole.

The only other thing I can think of is a bungee cord end rubbing in the same spot all winter and somehow the end poking through. I highly doubt that though.

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Patch small hole in aluminum siding

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