Product(s) for sealing external connections

[willema]

I'm wondering what products you use to seal the connections on the outside of your RVs such as water hookup connection, power connection, etc. I know you use Dicor or Eternabond tape for the roof. Wondering about connections on the sides of the RV.

[fella10]

I used clear silicone bath and kitchen caulk, when I had to remove and reinstall the power connection plate for a mod, ... that appeared to be the same thing the factory had used originally

[Bama Rambler]

For the connections you mention the factory usually uses butyl tape under the flanges. It seals well and is easy to clean off surfaces.

[Wileykid]

Originally Posted by fella10

I used clear silicone bath and kitchen caulk, when I had to remove and reinstall the power connection plate for a mod, ... that appeared to be the same thing the factory had used originally

Same here. So far replaced the water connection, and stove fan vent. Used clear silicone on both. Rain gutters that don't mate up right, exterior door frame's that the factory was a bit skimpy on. It appears that is what the factory uses, and I always carry a small tube of it in the trailer.

[SailorSam20500]

I'll stay with non-leveling lap sealant.

https://www.bing.com/videos/search?q...il&FORM=VIREHT

[valleyduo]

I like the butyl tape underneath with a layer of non level lap seal over top. What ever brand of lap seal you use, they all make a non leveling for sides or underneath use.

[chaps2018]

For items that penetrate the wall use Dicor butyl tape. Dicor BT-1834-1 1/8" x 3/4" x 30' Butyl Seal Tape https://www.amazon.com/dp/B001FCB4JS..._fRlmCbQK7F021 you can get the appropriate size tape to layer/fit any surface and will guarantee a leak proof seal.

For items that require caulk seal use Proflex RV. It is NOT silicone-based and is designed specifically for RV use (remains flexible as trailer parts move back and forth while traveling). Geocel 28100V GC28100 Pro Flex Rv Flexible Clear https://www.amazon.com/dp/B001FC98X2..._uUlmCb0SFR6SW choose the appropriate color.

Just a note on silicone-based caulks: The residue must be totally removed before any other product will stick to the surface where it was previously used. This not a product you want to use on a surface that continuously needs recaulking/sealing

Also, ensure you use sealants that are designed for exterior use. They have UV protectants that ensure the caulk will last in the sun.

I hate caulking and learned these lessons the hard way.

[5picker]

I was told during a factory tour to never use silicone sealant anywhere near an R/V. When cured, not much sticks to silicone, even itself. It also molds.

The factory told me they use ProFlex sealants in multiple colors made by Geocel for sealing around the sides. (Not the roof) I purchased several tubes in various colors (clear, beige, white) for touch-up, repair work.

I've read reports on R/V forums that folks have had luck using Lexel sealants too but have no personal experience.

Factories also use butyl tape around windows and doors before installation of such. Often times running a bead of sealant around the perimeter after the installation.

Roof sealants are different and Dicor and Alpha sealants (for their respective TPO materials) are necessary there.

[itat]

I have always used Geocel ProFlex RV on vertical surfaces. Use butyl tape if you are replacing a part on the walls, and seal all around with ProFlex. Touch up as needed with ProFlex.

[ejohnson1144]

I buy Good old dap kitchen and bath for the small stuff silicone not recommended

[itat]

Originally Posted by ejohnson1144

I buy Good old dap kitchen and bath for the small stuff silicone not recommended

Is the DAP kitchen and bath caulk you’re using rated for exterior use and good for sub-freezing temps?

[ejohnson1144]

Originally Posted by itat

Is the DAP kitchen and bath caulk you’re using rated for exterior use and good for sub-freezing temps?

Yes it is

[ejohnson1144]

Originally Posted by itat

Is the DAP kitchen and bath caulk you’re using rated for exterior use and good for sub-freezing temps?

I keep a tube in my tool bag. I do use dicor on the roof and the bigger gaps but I find the dap looks better for areas around the vent shrouds and outlets. It smoothes so much nicer for visable areas.