What caulk to use here

[mike_brez]

Ok need your all’s help again
Need to caulk this area. I have a bunch of Dicor lap sealant is that ok to use here?
I think I would rather use something clear though. Also what to use to clean prior to caulking.

[MudChucker]

Mhrv 2300 manufacturers info

[MudChucker]

Surprised to hear that of 2300, we use 2300 as a seam sealer on grain truck bodies, that stuff has to be chiseled off, that's why I wouldn't recommend it on exposed RV appliaction as it's hard to remove.

[Garry_Gayle]

Do not use Geocell MHRV 2300, lasted less than a year before it started shrinking and cracking plus it's a ***** to remove.

[MudChucker]

Keep in mind, I live in one of the most extreme weather conditions on the planet, we need stuff that works from -45c to +45cm

[MudChucker]

Usually 227. 291 can be a real grunt to remove.

Forgot to mention geocel 2300 is another good product.

Uv silicone, attracts dirt and will almost always leak as it doesn't stick very well.

[mike_brez]

MudChucker wrote:
Proflex or sikaflex.

Do not use any kind of uv stable silicone ****.

Proflex or sikaflex... Nothing else.

Looks like Sikaflex has a hundred different ones.
What one do you recommend #291?

[rtate]

I have experimented with several different types of caulk and recently gone back to using GE window and door silicone. Seems pretty easy to work with and looks good. I believe all manufacturers use silicone. What does everyone have against it?

[MudChucker]

Btw, if the dealer attempts to suggest anything else... Leave and never go back. Ever.

[MudChucker]

Proflex or sikaflex.

Do not use any kind of uv stable silicone ****.

Proflex or sikaflex... Nothing else.

[rgatijnet1]

I prefer a clear urethane caulk over anything with silicone in it. The tape does work well to keep a straight line as well as enable you to push it in to the joint for good adhesion.

[dieseltruckdriv]

Yep, blue tape it, then use the clear Proflex, smooth it out, and remove the tape.

[rickcarlene]

We have a Tiffin they told me to use any high quality silicone I used clear I caulked similar seams last year so far so good.I cleaned with soap and water the wiped area with alchohol,also before caulking tape of seams with blue painters tape makes for a nice uniform job.

good luck Rick

[garym114]

Use ProFlex. You can smooth the bead with a soapy finger.
available in several colors and clear.
https://www.geocelusa.com/product/pro-flex-rv-flexible-sealant/