Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC on M.A.R.S. > Montana Problems, Problem Solving & Technical Help
Click Here to Login

Thread Tools Display Modes
Old 01-14-2019, 08:10 AM   #1
Established Member
daveinaz's Avatar
Join Date: Jan 2019
Location: Sun City
Posts: 19
M.O.C. #23256
Butyl tape or caulk?

Sorry for all these questions. I hope that soon I'll be able to be giving some answers.

I need to reseal the outside frames of both furnace and water heater where they attach to outside wall. Do you guys recommend butyl tape, caulk, or what?

I'm asking because there was NOTHING around the water heater! Just metal to metal and metal to fiberglass. The frame was directly contacting the outer wall and nothing between it and the face of the water heater.

So now I'm figuring "as long as I'm at it," I may as well go over the entire rig and redo seals and stuff.

I've read some threads that recommend against silicone because you have to remove all of the old to add new so I'm just asking what's best. Not looking for cheapest since I figure that it's cheaper to use good stuff and only do it once instead of using less quality and having to redo it.

Thanks again.
Dave in AZ
2008 Montana 3400RL
2008 Dodge Ram 3500 Diesel Dually
daveinaz is offline   Reply With Quote
Old 01-14-2019, 09:54 AM   #2
Montana Master
Join Date: Jan 2016
Location: STAYTON
Posts: 668
M.O.C. #18157
Personally I would do both.. Install the butyl tape and wait a few days for it to stop squeezing out. Trim off what has squeezed out and seal over with a high quality clear sealer. That will assure a seal, and also keep the butyl from turning black and ugly.


2016 3610/2012 F-350 Powerstroke
MARK A is offline   Reply With Quote
Old 01-14-2019, 03:23 PM   #3
Montana Master
rohrmann's Avatar
Join Date: Oct 2012
Location: Box Elder
Posts: 2,278
M.O.C. #12947
On our rig, the water heater is caulked with silicone, and the heater is not caulked. You need to be able to access the heater by removing the cover, so donít caulk that.
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
rohrmann is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 06:33 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.