Resealing roof.

[GEMCART]

I want to have entire roof resealed. What caulking should I use? Thanks 2000 Allegro bus, one piece fiberglass roof.

[OMMM4747]

There are lots of YouTube videos addressing that question. Most will tell you to remove the old caulk and then reseal w/Dicor self-leveling sealant. You can also use Eternabond tape; YouTube videos on that as well.

Good luck

[GEMCART]

Thanks never thought of youtube.

[98fleetwood]

Dicor non-sag for the outside edges and Dicor self leveling on the flatter areas. I used mostly "non-sag" because my roof is rounded. My edges are on the sides of my coach.
Amazon Dicor you will not be disappointed.

[Gravelette]

2000 Allegro, eh? Congrats on finding something. How about some pics?

[GEMCART]

Have not took possession yet waiting for engine analysis to come back. everything looks great.

[SavnTheWales]

Yes, remove all old sealant (don’t just go over old). Clean surface well before applying new sealant. Be liberal with sealant.

[ChrisDParise]

Watch the video from dicor

https://www.google.com/url?sa=t&sour...cC4k76finHvX5q

[ChrisDParise]

Originally Posted by GEMCART

I want to have entire roof resealed. What caulking should I use? Thanks 2000 Allegro bus, one piece fiberglass roof.

Do you want to caulk roof seams or reseal the entire roof? These could be 2 different things.

Resealing entire roof could be interpreted as applying a roof sealant which is painted and rolled on with paint brushes and rollers.

But you're asking what caulk to use. So are you asking for just the caulk and you already know what sealant your going to use over all the flat roof surfaces or are you just going to touchup the roof seams with caulk?

[glwinger]

Be careful with Eternabond. A lot of the sealers will not stick to it.

As far as caulking, remove as much as you can and clean thoroughly. Seal the roof and allow it to cure, then do the seams and the things on the roof.
DO NOT use silicone. It is almost impossible to remove and nothing else will stick to it. Not even silicone. Dicor or Alpha Systems works great.

[Wellibe]

Originally Posted by glwinger

Be careful with Eternabond. A lot of the sealers will not stick to it.

As far as caulking, remove as much as you can and clean thoroughly. Seal the roof and allow it to cure, then do the seams and the things on the roof.
DO NOT use silicone. It is almost impossible to remove and nothing else will stick to it. Not even silicone. Dicor or Alpha Systems works great.

I'll second the warning about Eternabond. I tried taping over seams and the tape stuck to the aluminum and rubber on either side, but did not stick to the existing sealant. Of course the tape wouldn't stay down since it wasn't adhered in the middle, and it was a big PITA to remove. Yes, I cleaned everything with a toothbrush, and yes I pressed the tape down with a roller.

[OMMM4747]

I carry Eternabond tape for emergency repairs only such as a roof puncture due to hail or a falling branch. Given the option, I avoid camping under trees but at some campsites it's unavoidable. Notwithstanding, some do use it for 'resealing' and why I included it as an option. I haven't used it, but YouTube videos indicate that once it's on, it's very difficult to remove and why I wouldn't use it except in an emergency.

There are other -- more expensive options -- such as an entire roof recoating.

https://www.youtube.com/watch?v=sJj9...l=EndlessRVing

Good luck

[SafariBen]

Not sure if you're doing this yourself, or picking the product to have someone use? If you're using an experienced roofer, even non RV roofer, I'd use the products they're familiar with.



If you're doing it on your own, there are lots of products that are similar, and much less important between products than the prep and application procedure. I'm not a fan of lap sealant. It's a product you see mostly on RVs, and it's main advantage is a "puddling" characteristic that makes it look a lot better than a sealant like polyurethane (I prefer vulkem, dymonic, sika etc.). The roof coating can be any number of acrylic roof coatings from big box stores.