What is everyones favotive caulk?

While I use Dicor, my answer is ANYTHING WITH ABSOLUTELY NO SILICONE! Yes, I meant to shout. Never use Silicone on your RV. Ever.

On all my exterior openings I use Geocel
proflex rv it comes in different colors
Including clear but don't use on epmd rubber
roof. I use dicor self leveling lap sealant of
that.

i prefer 3M marine polyurethane
next in store brand polyurethane found in the roofing department

Avoid loctite polyurethane, takes forever to setup
still soft and sticky 24 hrs after application
not good for things that move like RV's

I initially used Geocel. Unfortunately I had problems twice. I got a couple of tubes at an RV hardware location. Then I got a couple more tubes by mail from Camping World. None of the caulk worked. It went on OK but would not stick well after curing. Maybe there was a bad patch and I just got unlucky twice. I switched to Dicor.

Honestly... after learning applying caulk is sometimes more of an art and lots of practice just like anything new ...
Doctor. But easier for you to use what OEM first used if possible; but not always easy to find out.

Depends on the job you are doing and if you need to easily remove hardware later, etc.

Nothing wrong with silicone for glazing purposes.
Usually use 3m products in general.

HadEnough wrote:
Depends on the job you are doing and if you need to easily remove hardware later, etc.

Nothing wrong with silicone for glazing purposes.
Usually use 3m products in general.

I agree. Silicone has it's place even in the RV world. I use Sikaflex products myself.

The rv dealer by me uses Nu-Flex caulking, Dicor, or Geocell, aplha brand caulk ( for aplha systems TPO roofs) or self leveling silicone depending on the roof material. I myself use NuFlex for non roof caulking ( windows, belt line, cargo door openings etc. for the rood i can use either Dicor self leveling, or Aplha, cause i have an Alpha TPO roof

I use DAP Adhesive Caulk and have for over 10 years. There are 3 versions DAP makes. 1. Comes out white(so you can make sure you have filled the area gap) and dries crystal clear. SO CLEAR, that I have had customers complain I did NOT seal the areas I sealed and I had to poke it with a pen to show them it is sealed. 2. CLEAR 3. WHITE.
This is an ADHESIVE CAULK and will adhere to almost anything except a EPDM/TPO roof which you would not use this product on the roof anyway. I use it to bond wood panels inside the RV and other things that need a ADHESIVE. It bonds to the Plastic/fiberglass shower walls and will bond to Glass. I have not used Silicone sealant since I found this DAP product. Doug

PS, It does NOT flow like silicone, it is smoother and not as lumpy as silicone.

https://www.zoro.com/dap-adhesive-caulk-101-oz-clear-18242/i/G4531247/feature-product?gclid=EAIaIQobChMI2Nmk-cWP3AIV3rXACh2qZAS6EAQYAiABEgJBLvD_BwE&gclsrc=aw.ds

What stinks is the half a** job that was done on my TT when it was new...Dealer says it is Silicon.. Don't no if its true ( Ha Ha} but Im going to be using Proflex and Dicor on the roof. Roof is done for now but Im not sure if the Proflex will stick to the Silicon if that's what it is. I guess I will find out.