Eternabond tape on fiberglass sides

Clean the joint and use some caulk.

While you could do that, I suspect it isn't going to look pretty.

The better route is to remove the aluminum trim, then remove and clean up the caulking that is under the trim.

Then add new caulking and reinstall the aluminum trim.

To remove the aluminum trim, you will need to remove the plastic cover on the trim, that will uncover the screws that hold the trim in place.

You might be able to reuse the plastic cover if it hasn't gotten brittle but better yet, you can buy new plastic cover material..

Looks like this..



1" wide can be found HERE

You will need to measure the width as there are different trim widths.

The caulking used under the aluminum trim is a flat butyl rubber tape, very sticky when new..

Looks like this..



Found HERE for $18 for 30ft

Do it right the first time with the correct products, otherwise you will regret the results of attempting to remove a product that is called "Eternabond"..

Eternabond will work but it is one heck of a job to keep it under control when you apply it.

I would use dicor next time.

X2 on removing the metal corner molding, first I’d check the water damage JD deal with repairing it as left alone will just get worse. Then put down new butyl tape, then reinstall the metal trim and seal with Dicor.

A good video to watch is this one….. https://youtu.be/PO8EvZ4AAp8

In it you will see a Dicor corner tape available on Amazon used. If I ever have to do this job it’s exactly what I would use….. https://www.amazon.com/Dicor-CS200B-1-Seal-Tite-Corner-Seal/dp/B0778W37ZD?dchild=1&keywords=Dicor+CS200B-1+Seal-Tite+Corner+Seal+Tape+-+2%22+x+50%27&qid=1626444496&sr=8-1&linkCode=sl1&tag=lo02f-20&linkId=1955b9423a92affab706dfd5d1c137b8&language=en_US&ref_=as_li_ss_tl

I have successfully used eternal bond tape on side of my fiberglass trailer and where it attaches to lower metal frame due to road debris damage. The white tape blended in nicely with my white trailer. Never any water leaks in many years of hard travel.

Gdetrailer wrote:
While you could do that, I suspect it isn't going to look pretty.

The better route is to remove the aluminum trim, then remove and clean up the caulking that is under the trim.

Then add new caulking and reinstall the aluminum trim.

To remove the aluminum trim, you will need to remove the plastic cover on the trim, that will uncover the screws that hold the trim in place.

You might be able to reuse the plastic cover if it hasn't gotten brittle but better yet, you can buy new plastic cover material..

Looks like this..



1" wide can be found HERE

You will need to measure the width as there are different trim widths.

The caulking used under the aluminum trim is a flat butyl rubber tape, very sticky when new..

Looks like this..



Found HERE for $18 for 30ft

Do it right the first time with the correct products, otherwise you will regret the results of attempting to remove a product that is called "Eternabond"..

I would remove clean and re-calk with the correct calk and butyle tape.